1、原生JavaScript實現字符串長度截取
2、原生JavaScript獲取域名主機function cutstr(str, len) {var temp;var icount = 0;var patrn = /[^\x00-\xff]/;var strre = "";for (var i = 0; i < str.length; i++) {if (icount < len - 1) {temp = str.substr(i, 1);if (patrn.exec(temp) == null) {icount = icount + 1} else {icount = icount + 2}strre += temp} else {break}}return strre + "..."}
function getHost(url) {var host = "null";if(typeof url == "undefined"|| null == url) {url = window.location.href;}var regex = /^\w+\:\/\/([^\/]*).*/;var match = url.match(regex);if(typeof match != "undefined" && null != match) {host = match[1];}return host;}
3、原生JavaScript清除空格
String.prototype.trim = function() {var reExtraSpace = /^\s*(.*?)\s+$/;return this.replace(reExtraSpace, "$1")}
4、原生JavaScript替換全部
String.prototype.replaceAll = function(s1, s2) {return this.replace(new RegExp(s1, "gm"), s2)}
5、原生JavaScript轉義html標籤
function HtmlEncode(text) {return text.replace(/&/g, '&').replace(/\"/g, '"').replace(/</g, '<').replace(/>/g, '>')}
6、原生JavaScript還原html標籤
function HtmlDecode(text) {return text.replace(/&/g, '&').replace(/"/g, '\"').replace(/</g, '<').replace(/>/g, '>')}
7、原生JavaScript時間日期格式轉換
Date.prototype.Format = function(formatStr) {var str = formatStr;var Week = ['日', '一', '二', '三', '四', '五', '六'];str = str.replace(/yyyy|YYYY/, this.getFullYear());str = str.replace(/yy|YY/, (this.getYear() % 100) > 9 ? (this.getYear() % 100).toString() : '0' + (this.getYear() % 100));str = str.replace(/MM/, (this.getMonth() + 1) > 9 ? (this.getMonth() + 1).toString() : '0' + (this.getMonth() + 1));str = str.replace(/M/g, (this.getMonth() + 1));str = str.replace(/w|W/g, Week[this.getDay()]);str = str.replace(/dd|DD/, this.getDate() > 9 ? this.getDate().toString() : '0' + this.getDate());str = str.replace(/d|D/g, this.getDate());str = str.replace(/hh|HH/, this.getHours() > 9 ? this.getHours().toString() : '0' + this.getHours());str = str.replace(/h|H/g, this.getHours());str = str.replace(/mm/, this.getMinutes() > 9 ? this.getMinutes().toString() : '0' + this.getMinutes());str = str.replace(/m/g, this.getMinutes());str = str.replace(/ss|SS/, this.getSeconds() > 9 ? this.getSeconds().toString() : '0' + this.getSeconds());str = str.replace(/s|S/g, this.getSeconds());return str}
8、原生JavaScript判斷是否爲數字類型
function isDigit(value) {var patrn = /^[0-9]*$/;if (patrn.exec(value) == null || value == "") {return false} else {return true}}
9、原生JavaScript設置cookie值
function setCookie(name, value, Hours) {var d = new Date();var offset = 8;var utc = d.getTime() + (d.getTimezoneOffset() * 60000);var nd = utc + (3600000 * offset);var exp = new Date(nd);exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000);document.cookie = name + "=" + escape(value) + ";path=/;expires=" + exp.toGMTString() + ";domain=360doc.com;"}
10、原生JavaScript獲取cookie值
function getCookie(name) {var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));if (arr != null) return unescape(arr[2]);return null}
11、原生JavaScript加入收藏夾
function AddFavorite(sURL, sTitle) {try {window.external.addFavorite(sURL, sTitle)} catch(e) {try {window.sidebar.addPanel(sTitle, sURL, "")} catch(e) {alert("加入收藏失敗，請使用Ctrl+D進行添加")}}}
12、原生JavaScript設爲首頁
function setHomepage() {if (document.all) {document.body.style.behavior = 'url(#default#homepage)';document.body.setHomePage('http://www.jq-school.com')} else if (window.sidebar) {if (window.netscape) {try {netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect")} catch(e) {alert("該操作被瀏覽器拒絕，如果想啓用該功能，請在地址欄內輸入 about:config,然後將項 signed.applets.codebase_principal_support 值該爲true")}}var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);prefs.setCharPref('browser.startup.homepage', 'http://www.jq-school.com')}}
13、原生JavaScript判斷IE6
var ua = navigator.userAgent.toLowerCase();var isIE6 = ua.indexOf("msie 6") > -1;if (isIE6) {try {document.execCommand("BackgroundImageCache", false, true)} catch(e) {}}
14、原生JavaScript加載樣式文件
function LoadStyle(url) {try {document.createStyleSheet(url)} catch(e) {var cssLink = document.createElement('link');cssLink.rel = 'stylesheet';cssLink.type = 'text/css';cssLink.href = url;var head = document.getElementsByTagName('head')[0];head.appendChild(cssLink)}}
15、原生JavaScript返回腳本內容
function evalscript(s) {if(s.indexOf('<script') == -1) return s;var p = /<script[^\>]*?>([^\x00]*?)<\/script>/ig;var arr = [];while(arr = p.exec(s)) {var p1 = /<script[^\>]*?src=\"([^\>]*?)\"[^\>]*?(reload=\"1\")?(?:charset=\"([\w\-]+?)\")?><\/script>/i;var arr1 = [];arr1 = p1.exec(arr[0]);if(arr1) {appendscript(arr1[1], '', arr1[2], arr1[3]);} else {p1 = /<script(.*?)>([^\x00]+?)<\/script>/i;arr1 = p1.exec(arr[0]);appendscript('', arr1[2], arr1[1].indexOf('reload=') != -1);}}return s;}
16、原生JavaScript清除腳本內容
function stripscript(s) {return s.replace(/<script.*?>.*?<\/script>/ig, '');}
17、原生JavaScript動態加載腳本文件
function appendscript(src, text, reload, charset) {var id = hash(src + text);if(!reload && in_array(id, evalscripts)) return;if(reload && $(id)) {$(id).parentNode.removeChild($(id));}evalscripts.push(id);var scriptNode = document.createElement("script");scriptNode.type = "text/javascript";scriptNode.id = id;scriptNode.charset = charset ? charset : (BROWSER.firefox ? document.characterSet : document.charset);try {if(src) {scriptNode.src = src;scriptNode. = false;scriptNode.onload = function () {scriptNode. = true;JSLOADED[src] = 1;};scriptNode.onreadystatechange = function () {if((scriptNode.readyState == 'loaded' || scriptNode.readyState == 'complete') && !scriptNode. {scriptNode. = true;JSLOADED[src] = 1;}};} else if(text){scriptNode.text = text;}document.getElementsByTagName('head')[0].appendChild(scriptNode);} catch(e) {}}
18、原生JavaScript返回按ID檢索的元素對象
function $(id) {return !id ? null : document.getElementById(id);}
19、原生JavaScript返回瀏覽器版本內容
function browserVersion(types) {var other = 1;for(i in types) {var v = types<i> ? types<i> : i;if(USERAGENT.indexOf(v) != -1) {var re = new RegExp(v + '(\\/|\\s)([\\d\\.]+)', 'ig');var matches = re.exec(USERAGENT);var ver = matches != null ? matches[2] : 0;other = ver !== 0 && v != 'mozilla' ? 0 : other;}else {var ver = 0;}eval('BROWSER.' + i + '= ver');}BROWSER.other = other;}
20、原生JavaScript元素顯示的通用方法
function $(id) {return !id ? null : document.getElementById(id);}function display(id) {var obj = $(id);if(obj.style.visibility) {obj.style.visibility = obj.style.visibility == 'visible' ? 'hidden' : 'visible';} else {obj.style.display = obj.style.display == '' ? 'none' : '';}}
21、原生JavaScript中有insertBefore方法,可惜卻沒有insertAfter方法?用如下函數實現
function insertAfter(newChild,refChild){var parElem=refChild.parentNode;if(parElem.lastChild==refChild){refChild.appendChild(newChild);}else{parElem.insertBefore(newChild,refChild.nextSibling);}}
22、原生JavaScript中兼容瀏覽器綁定元素事件
function addEventSamp(obj,evt,fn){if (obj.addEventListener) {obj.addEventListener(evt, fn, false);}else if(obj.attachEvent){obj.attachEvent('on'+evt,fn);}}
23、原生JavaScript光標停在文字的後面，文本框獲得焦點時調用
function focusLast(){var e = event.srcElement;var r =e.createTextRange();r.moveStart('character',e.value.length);r.collapse(true);r.select();}
24、原生JavaScript檢驗URL鏈接是否有效
function getUrlState(URL){var xmlhttp = new ActiveXObject("microsoft.xmlhttp");xmlhttp.Open("GET",URL, false);try{xmlhttp.Send();}catch(e){}finally{var result = xmlhttp.responseText;if(result){if(xmlhttp.Status==200){return(true);}else{return(false);}}else{return(false);}}}
25、原生JavaScript格式化CSS樣式代碼
function formatCss(s){//格式化代碼s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");s = s.replace(/;\s*;/g, ";"); //清除連續分號s = s.replace(/\,[\s\.\#\d]*{/g, "{");s = s.replace(/([^\s])\{([^\s])/g, "$1 {\n\t$2");s = s.replace(/([^\s])\}([^\n]*)/g, "$1\n}\n$2");s = s.replace(/([^\s]);([^\s\}])/g, "$1;\n\t$2");return s;}
26、原生JavaScript壓縮CSS樣式代碼
function yasuoCss (s) {//壓縮代碼s = s.replace(/\/\*(.|\n)*?\*\//g, ""); //刪除註釋s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");s = s.replace(/\,[\s\.\#\d]*\{/g, "{"); //容錯處理s = s.replace(/;\s*;/g, ";"); //清除連續分號s = s.match(/^\s*(\S+(\s+\S+)*)\s*$/); //去掉首尾空白return (s == null) ? "" : s[1];}
27、原生JavaScript獲取當前路徑
var currentPageUrl = "";if (typeof this.href === "undefined") {currentPageUrl = document.location.toString().toLowerCase();}else {currentPageUrl = this.href.toString().toLowerCase();}
28、原生JavaScriptIP轉成整型
function _ip2int(ip){var num = 0;ip = ip.split(".");num = Number(ip[0]) * 256 * 256 * 256 + Number(ip[1]) * 256 * 256 + Number(ip[2]) * 256 + Number(ip[3]);num = num >>> 0;return num;}
29、原生JavaScript整型解析爲IP地址
function _int2iP(num){var str;var tt = new Array();tt[0] = (num >>> 24) >>> 0;tt[1] = ((num << 8) >>> 24) >>> 0;tt[2] = (num << 16) >>> 24;tt[3] = (num << 24) >>> 24;str = String(tt[0]) + "." + String(tt[1]) + "." + String(tt[2]) + "." + String(tt[3]);return str;}
30、原生JavaScript實現checkbox全選與全不選
function checkAll() {var selectall = document.getElementById("selectall");var allbox = document.getElementsByName("allbox");if (selectall.checked) {for (var i = 0; i < allbox.length; i++) {allbox.checked = true;}} else {for (var i = 0; i < allbox.length; i++) {allbox.checked = false;}}}
31、原生] JavaScript判斷是否移動設備
function isMobile(){if (typeof this._isMobile === 'boolean'){return this._isMobile;}var screenWidth = this.getScreenWidth();var fixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport;var fixViewPortsExperimentRunning = fixViewPortsExperiment && (fixViewPortsExperiment.toLowerCase() === "new");if(!fixViewPortsExperiment){if(!this.isAppleMobileDevice()){screenWidth = screenWidth/window.devicePixelRatio;}}var isMobileScreenSize = screenWidth < 600;var isMobileUserAgent = false;this._isMobile = isMobileScreenSize && this.isTouchScreen();return this._isMobile;}
32、原生JavaScript判斷是否移動設備訪問
function isAppleMobileDevice(){return (/iphone|ipod|ipad|Macintosh/i.test(navigator.userAgent.toLowerCase()));}
33、原生JavaScript判斷是否蘋果移動設備訪問
function isAppleMobileDevice(){return (/iphone|ipod|ipad|Macintosh/i.test(navigator.userAgent.toLowerCase()));}
34、原生JavaScript判斷是否安卓移動設備訪問
function isAndroidMobileDevice(){return (/android/i.test(navigator.userAgent.toLowerCase()));}
35、原生JavaScript判斷是否Touch屏幕
function isTouchScreen(){return (('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch);}
36、原生JavaScript判斷是否在安卓上的谷歌瀏覽器
function isNewChromeOnAndroid(){if(this.isAndroidMobileDevice()){var userAgent = navigator.userAgent.toLowerCase();if((/chrome/i.test(userAgent))){var parts = userAgent.split('chrome/');var fullVersionString = parts[1].split(" ")[0];var versionString = fullVersionString.split('.')[0];var version = parseInt(versionString);if(version >= 27){return true;}}}return false;}
37、原生JavaScript判斷是否打開視窗
function isViewportOpen() {return !!document.getElementById('wixMobileViewport');}
38、原生JavaScript獲取移動設備初始化大小
function getInitZoom(){if(!this._initZoom){var screenWidth = Math.min(screen.height, screen.width);if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){screenWidth = screenWidth/window.devicePixelRatio;}this._initZoom = screenWidth /document.body.offsetWidth;}return this._initZoom;}
39、原生JavaScript獲取移動設備最大化大小
function getZoom(){var screenWidth = (Math.abs(window.orientation) === 90) ? Math.max(screen.height, screen.width) : Math.min(screen.height, screen.width);if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){screenWidth = screenWidth/window.devicePixelRatio;}var FixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport;var FixViewPortsExperimentRunning = FixViewPortsExperiment && (FixViewPortsExperiment === "New" || FixViewPortsExperiment === "new");if(FixViewPortsExperimentRunning){return screenWidth / window.innerWidth;}else{return screenWidth / document.body.offsetWidth;}}
40、原生JavaScript獲取移動設備屏幕寬度
function getScreenWidth(){var smallerSide = Math.min(screen.width, screen.height);var fixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport;var fixViewPortsExperimentRunning = fixViewPortsExperiment && (fixViewPortsExperiment.toLowerCase() === "new");if(fixViewPortsExperiment){if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){smallerSide = smallerSide/window.devicePixelRatio;}}return smallerSide;}
41、原生 JavaScript完美判斷是否爲網址
function IsURL(strUrl) {var regular = /^\b(((https?|ftp):\/\/)?[-a-z0-9]+(\.[-a-z0-9]+)*\.(?:com|edu|gov|int|mil|net|org|biz|info|name|museum|asia|coop|aero|[a-z][a-z]|((25[0-5])|(2[0-4]\d)|(1\d\d)|([1-9]\d)|\d))\b(\/[-a-z0-9_:\@&?=+,.!\/~%\$]*)?)$/iif (regular.test(strUrl)) {return true;}else {return false;}}
42、原生JavaScript根據樣式名稱檢索元素對象
function getElementsByClassName(name) {var tags = document.getElementsByTagName('*') || document.all;var els = [];for (var i = 0; i < tags.length; i++) {if (tags.className) {var cs = tags.className.split(' ');for (var j = 0; j < cs.length; j++) {if (name == cs[j]) {els.push(tags);break}}}}return els}
43、原生JavaScript判斷是否以某個字符串開頭
String.prototype.startWith = function (s) {return this.indexOf(s) == 0}
44、原生JavaScript判斷是否以某個字符串結束
String.prototype.endWith = function (s) {var d = this.length - s.length;return (d >= 0 && this.lastIndexOf(s) == d)}
45、原生JavaScript返回IE瀏覽器的版本號
function getIE(){if (window.ActiveXObject){var v = navigator.userAgent.match(/MSIE ([^;]+)/)[1];return parseFloat(v.substring(0, v.indexOf(".")))}return false}
46、原生JavaScript獲取頁面高度
function getPageHeight(){var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"? a: g.documentElement;return Math.max(f.scrollHeight, a.scrollHeight, d.clientHeight);}
47、原生JavaScript獲取頁面scrollLeft
function getPageScrollLeft(){var a = document;return a.documentElement.scrollLeft || a.body.scrollLeft;}
48、原生JavaScript獲取頁面可視寬度
function getPageViewWidth(){var d = document, a = d.compatMode == "BackCompat"? d.body: d.documentElement;return a.clientWidth;}
49、原生JavaScript獲取頁面寬度
function getPageWidth(){var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"? a: g.documentElement;return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth);}
50、原生JavaScript獲取頁面scrollTop
function getPageScrollTop(){var a = document;return a.documentElement.scrollTop || a.body.scrollTop;}
51、原生JavaScript獲取頁面可視高度
function getPageViewHeight() {var d = document, a = d.compatMode == "BackCompat"? d.body: d.documentElement;return a.clientHeight;}
52、原生JavaScript跨瀏覽器添加事件
function addEvt(oTarget,sEvtType,fnHandle){if(!oTarget){return;}if(oTarget.addEventListener){oTarget.addEventListener(sEvtType,fnHandle,false);}else if(oTarget.attachEvent){oTarget.attachEvent("on" + sEvtType,fnHandle);}else{oTarget["on" + sEvtType] = fnHandle;}}
53、原生JavaScript跨瀏覽器刪除事件
function delEvt(oTarget,sEvtType,fnHandle){if(!oTarget){return;}if(oTarget.addEventListener){oTarget.addEventListener(sEvtType,fnHandle,false);}else if(oTarget.attachEvent){oTarget.attachEvent("on" + sEvtType,fnHandle);}else{oTarget["on" + sEvtType] = fnHandle;}}
54、原生JavaScript去掉url前綴
function removeUrlPrefix(a){a=a.replace(/：/g,":").replace(/．/g,".").replace(/／/g,"/");while(trim(a).toLowerCase().indexOf("http://")==0){a=trim(a.replace(/http:\/\//i,""));}return a;}
55、原生JavaScript隨機數時間戳
function uniqueId(){var a=Math.random,b=parseInt;return Number(new Date()).toString()+b(10*a())+b(10*a())+b(10*a());}
56、原生JavaScript全角半角轉換,iCase: 0全到半，1半到全，其他不轉化
function chgCase(sStr,iCase){if(typeof sStr != "string" || sStr.length <= 0 || !(iCase === 0 || iCase == 1)){return sStr;}var i,oRs=[],iCode;if(iCase){/*半->全*/for(i=0; i<sStr.length;i+=1){iCode = sStr.charCodeAt(i);if(iCode == 32){iCode = 12288;}else if(iCode < 127){iCode += 65248;}oRs.push(String.fromCharCode(iCode));}}else{/*全->半*/for(i=0; i<sStr.length;i+=1){iCode = sStr.charCodeAt(i);if(iCode == 12288){iCode = 32;}else if(iCode > 65280 && iCode < 65375){iCode -= 65248;}oRs.push(String.fromCharCode(iCode));}}return oRs.join("");}
57、原生JavaScript確認是否鍵盤有效輸入值
function checkKey(iKey){if(iKey == 32 || iKey == 229){return true;}/*空格和異常*/if(iKey>47 && iKey < 58){return true;}/*數字*/if(iKey>64 && iKey < 91){return true;}/*字母*/if(iKey>95 && iKey < 108){return true;}/*數字鍵盤1*/if(iKey>108 && iKey < 112){return true;}/*數字鍵盤2*/if(iKey>185 && iKey < 193){return true;}/*符號1*/if(iKey>218 && iKey < 223){return true;}/*符號2*/return false;}
58、原生JavaScript獲取網頁被捲去的位置
function getScrollXY() {return document.body.scrollTop ? {x: document.body.scrollLeft,y: document.body.scrollTop}: {x: document.documentElement.scrollLeft,y: document.documentElement.scrollTop}}
59、原生JavaScript另一種正則日期格式化函數+調用方法
Date.prototype.format = function(format){ //author: meizzvar o = {"M+" : this.getMonth()+1, //month"d+" : this.getDate(), //day"h+" : this.getHours(), //hour"m+" : this.getMinutes(), //minute"s+" : this.getSeconds(), //second"q+" : Math.floor((this.getMonth()+3)/3), //quarter"S" : this.getMilliseconds() //millisecond}if(/(y+)/.test(format)) format=format.replace(RegExp.$1,(this.getFullYear()+"").substr(4 - RegExp.$1.length));for(var k in o)if(new RegExp("("+ k +")").test(format))format = format.replace(RegExp.$1,RegExp.$1.length==1 ? o[k] :("00"+ o[k]).substr((""+ o[k]).length));return format;}alert(new Date().format("yyyy-MM-dd hh:mm:ss"));
60、原生JavaScript時間個性化輸出功能
/*1、< 60s, 顯示爲“剛剛”2、>= 1min && < 60 min, 顯示與當前時間差“XX分鐘前”3、>= 60min && < 1day, 顯示與當前時間差“今天 XX:XX”4、>= 1day && < 1year, 顯示日期“XX月XX日 XX:XX”5、>= 1year, 顯示具體日期“XXXX年XX月XX日 XX:XX”*/function timeFormat(time){var date = new Date(time), curDate = new Date(), year = date.getFullYear(), month = date.getMonth() + 1, day = date.getDate(), hour = date.getHours(), minute = date.getMinutes(), curYear = curDate.getFullYear(), curHour = curDate.getHours(), timeStr;if(year < curYear){timeStr = year +'年'+ month +'月'+ day +'日 '+ hour +':'+ minute;}else{var pastTime = curDate - date, pastH = pastTime/3600000;if(pastH > curHour){timeStr = month +'月'+ day +'日 '+ hour +':'+ minute;}else if(pastH >= 1){timeStr = '今天 ' + hour +':'+ minute +'分';}else{var pastM = curDate.getMinutes() - minute;if(pastM > 1){timeStr = pastM +'分鐘前';}else{timeStr = '剛剛';}}}return timeStr;}
61、原生JavaScript解決offsetX兼容性問題
// 針對火狐不支持offsetX/Yfunction getOffset(e){var target = e.target, // 當前觸發的目標對象eventCoord,pageCoord,offsetCoord;// 計算當前觸發元素到文檔的距離pageCoord = getPageCoord(target);// 計算光標到文檔的距離eventCoord = {X : window.pageXOffset + e.clientX,Y : window.pageYOffset + e.clientY};// 相減獲取光標到第一個定位的父元素的座標offsetCoord = {X : eventCoord.X - pageCoord.X,Y : eventCoord.Y - pageCoord.Y};return offsetCoord;}function getPageCoord(element){var coord = { X : 0, Y : 0 };// 計算從當前觸發元素到根節點爲止，// 各級 offsetParent 元素的 offsetLeft 或 offsetTop 值之和while (element){coord.X += element.offsetLeft;coord.Y += element.offsetTop;element = element.offsetParent;}
return coord;}
62、原生JavaScript常用的正則表達式
//正整數/^[0-9]*[1-9][0-9]*$/;//負整數/^-[0-9]*[1-9][0-9]*$/;//正浮點數/^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$/;//負浮點數/^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$/;//浮點數/^(-?\d+)(\.\d+)?$/;//email地址/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;//url地址/^[a-zA-z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$/;//年/月/日（年-月-日、年.月.日）/^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$/;//匹配中文字符/[\u4e00-\u9fa5]/;//匹配帳號是否合法(字母開頭，允許5-10字節，允許字母數字下劃線)/^[a-zA-Z][a-zA-Z0-9_]{4,9}$/;//匹配空白行的正則表達式/\n\s*\r/;//匹配中國郵政編碼/[1-9]\d{5}(?!\d)/;//匹配身份證/\d{15}|\d{18}/;//匹配國內電話號碼/(\d{3}-|\d{4}-)?(\d{8}|\d{7})?/;//匹配IP地址/((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/;//匹配首尾空白字符的正則表達式/^\s*|\s*$/;//匹配HTML標記的正則表達式< (\S*?)[^>]*>.*?|< .*? />;
63、原生JavaScript實現返回頂部的通用方法
function backTop(btnId) {var btn = document.getElementById(btnId);var d = document.documentElement;var b = document.body;window.onscroll = set;btn.style.display = "none";btn.onclick = function() {btn.style.display = "none";window.onscroll = null;this.timer = setInterval(function() {d.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);b.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);if ((d.scrollTop + b.scrollTop) == 0) clearInterval(btn.timer, window.onscroll = set);},10);};function set() {btn.style.display = (d.scrollTop + b.scrollTop > 100) ? 'block': "none"}};backTop('goTop');
64、原生JavaScript獲得URL中GET參數值
// 用法：如果地址是 test.htm?t1=1&t2=2&t3=3, 那麼能取得：GET["t1"], GET["t2"], GET["t3"]function get_get(){querystr = window.location.href.split("?")if(querystr[1]){GETs = querystr[1].split("&")GET =new Array()for(i=0;i<GETs.length;i++){tmp_arr = GETs.split("=")key=tmp_arr[0]GET[key] = tmp_arr[1]}}return querystr[1];}
65、原生JavaScript實現全選通用方法
function checkall(form, prefix, checkall) {var checkall = checkall ? checkall : 'chkall';for(var i = 0; i < form.elements.length; i++) {var e = form.elements;if(e.type=="checkbox"){e.checked = form.elements[checkall].checked;}}}
66、原生JavaScript實現全部取消選擇通用方法
function uncheckAll(form) {for (var i=0;i<form.elements.length;i++){var e = form.elements;if (e.name != 'chkall')e.checked=!e.checked;}}
67、原生JavaScript實現打開一個窗體通用方法
function openWindow(url,windowName,width,height){var x = parseInt(screen.width / 2.0) - (width / 2.0);var y = parseInt(screen.height / 2.0) - (height / 2.0);var isMSIE= (navigator.appName == "Microsoft Internet Explorer");if (isMSIE) {var p = "resizable=1,location=no,scrollbars=no,width=";p = p+width;p = p+",height=";p = p+height;p = p+",left=";p = p+x;p = p+",top=";p = p+y;retval = window.open(url, windowName, p);} else {var win = window.open(url, "ZyiisPopup", "top=" + y + ",left=" + x + ",scrollbars=" + scrollbars + ",dialog=yes,modal=yes,width=" + width + ",height=" + height + ",resizable=no" );eval("try { win.resizeTo(width, height); } catch(e) { }");win.focus();}}
68、原生JavaScript判斷是否爲客戶端設備
function client(o){var b = navigator.userAgent.toLowerCase();var t = false;if (o == 'isOP'){t = b.indexOf('opera') > -1;}if (o == 'isIE'){t = b.indexOf('msie') > -1;}if (o == 'isFF'){t = b.indexOf('firefox') > -1;}return t;}
69、原生JavaScript獲取單選按鈕的值
function get_radio_value(field){if(field&&field.length){for(var i=0;i<field.length;i++){if(field.checked){return field.value;}}}else {return ;}}
70、原生JavaScript獲取複選框的值
function get_checkbox_value(field){if(field&&field.length){for(var i=0;i<field.length;i++){if(field.checked && !field.disabled){return field.value;}}}else {return;}}
71、原生JavaScript判斷是否爲郵箱
function isEmail(str){var re=/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/;if (re.test(str) != true) {return false;}else{return true;}}
72、原生JavaScript判斷是否有列表中的危險字符
function isValidReg(chars){var re=/<|>|\[|\]|\{|\}|『|』|※|○|●|◎|§|△|▲|☆|★|◇|◆|□|▼|㊣|﹋|⊕|⊙|〒|ㄅ|ㄆ|ㄇ|ㄈ|ㄉ|ㄊ|ㄋ|ㄌ|ㄍ|ㄎ|ㄏ|ㄐ|ㄑ|ㄒ|ㄓ|ㄔ|ㄕ|ㄖ|ㄗ|ㄘ|ㄙ|ㄚ|ㄛ|ㄜ|ㄝ|ㄞ|ㄟ|ㄢ|ㄣ|ㄤ|ㄥ|ㄦ|ㄧ|ㄨ|ㄩ|■|▄|▆|\*|@|#|\^|\\/;if (re.test( chars) == true) {return false;}else{return true;}}
73、原生JavaScript判斷字符串是否大於規定的長度
function isValidLength(chars, len) {if (chars.length < len) {return false;}return true;}
74、原生JavaScript判斷字符串是爲網址不區分大小寫
function isValidURL( chars ) {var re=/^([hH][tT]{2}[pP]:\/\/|[hH][tT]{2}[pP][sS]:\/\/)(\S+\.\S+)$/;if (!isNULL(chars)) {chars = jsTrim(chars);if (chars.match(re) == null)return false;elsereturn true;}return false;}
75、原生JavaScript判斷字符串是否爲小數
function isValidDecimal( chars ) {var re=/^\d*\.?\d{1,2}$/;if (chars.match(re) == null)return false;elsereturn true;}
76、原生JavaScript判斷字符串是否爲整數
function isNumber( chars ) {var re=/^\d*$/;if (chars.match(re) == null)return false;elsereturn true;}
77、原生JavaScript判斷字符串是否爲浮點數
function isFloat( str ) {for(i=0;i<str.length;i++) {if ((str.charAt(i)<"0" || str.charAt(i)>"9")&& str.charAt(i) != '.'){return false;}}return true;}
78、原生JavaScript判斷字符是否爲A-Za-z英文字母
function isLetters( str ){var re=/^[A-Za-z]+$/;if (str.match(re) == null)return false;elsereturn true;}
79、原生JavaScript判斷字符串是否郵政編碼
function isValidPost( chars ) {var re=/^\d{6}$/;if (chars.match(re) == null)return false;elsereturn true;}
80、原生JavaScript判斷字符是否空NULL
function isNULL( chars ) {if (chars == null)return true;if (jsTrim(chars).length==0)return true;return false;}
81、原生JavaScript用正則表達式提取頁面代碼中所有網址
var aa = document.documentElement.outerHTML.match(/(url\(|src=|href=)[\"\']*([^\"\'\(\)\<\>\[\] ]+)[\"\'\)]*|(http:\/\/[\w\-\.]+[^\"\'\(\)\<\>\[\] ]+)/ig).join("\r\n").replace(/^(src=|href=|url\()[\"\']*|[\"\'\>\) ]*$/igm,"");alert(aa)
82、原生JavaScript用正則表達式清除相同的數組(低效率)
Array.prototype.unique=function(){return this.reverse().join(",").match(/([^,]+)(?!.*\1)/ig).reverse();};
83、原生JavaScript用正則表達式清除相同的數組(高效率)
String.prototype.unique=function(){var x=this.split(/[\r\n]+/);var y='';for(var i=0;i<x.length;i++){if(!new RegExp("^"+x.replace(/([^\w])/ig,"\\$1")+"[ DISCUZ_CODE_2 ]quot;,"igm").test(y)){y+=x+"\r\n"}}return y};
84、原生JavaScript用正則表達式按字母排序，對每行進行數組排序
function SetSort(){var text=K1.value.split(/[\r\n]/).sort().join("\r\n");//順序var test=K1.value.split(/[\r\n]/).sort().reverse().join("\r\n");//反序K1.value=K1.value!=text?text:test;}
85、原生JavaScript字符串反序
function IsReverse(text){return text.split('').reverse().join('');}
86、原生JavaScript用正則表達式清除html代碼中的腳本
function clear_script(){K1.value=K1.value.replace(/<script.*?>[\s\S]*?<\/script>|\s+on[a-zA-Z]{3,16}\s?=\s?"[\s\S]*?"|\s+on[a-zA-Z]{3,16}\s?=\s?'[\s\S]*?'|\s+on[a-zA-Z]{3,16}\s?=[^ >]+/ig,"");}
87、原生JavaScript動態執行JavaScript腳本
function javascript(){try{eval(K1.value);}catch(e){alert(e.message);}}
88、原生JavaScript動態執行VBScript腳本
function vbscript(){try{var script=document.getElementById("K1").value;if(script.trim()=="")return;window.execScript('On Error Resume Next \n'+script+'\n If Err.Number<>0 Then \n MsgBox "請輸入正確的VBScript腳本!",48,"腳本錯誤!" \n End If',"vbscript")}catch(e){alert(e.message);}}
89、原生JavaScript實現金額大寫轉換函數
function transform(tranvalue) {try {var i = 1;var dw2 = new Array("", "萬", "億"); //大單位var dw1 = new Array("拾", "佰", "仟"); //小單位var dw = new Array("零", "壹", "貳", "叄", "肆", "伍", "陸", "柒", "捌", "玖"); //整數部分用//以下是小寫轉換成大寫顯示在合計大寫的文本框中//分離整數與小數var source = splits(tranvalue);var num = source[0];var dig = source[1];//轉換整數部分var k1 = 0; //計小單位var k2 = 0; //計大單位var sum = 0;var str = "";var len = source[0].length; //整數的長度for (i = 1; i <= len; i++) {var n = source[0].charAt(len - i); //取得某個位數上的數字var bn = 0;if (len - i - 1 >= 0) {bn = source[0].charAt(len - i - 1); //取得某個位數前一位上的數字}sum = sum + Number(n);if (sum != 0) {str = dw[Number(n)].concat(str); //取得該數字對應的大寫數字，並插入到str字符串的前面if (n == '0') sum = 0;}if (len - i - 1 >= 0) { //在數字範圍內if (k1 != 3) { //加小單位if (bn != 0) {str = dw1[k1].concat(str);}k1++;} else { //不加小單位，加大單位k1 = 0;var temp = str.charAt(0);if (temp == "萬" || temp == "億") //若大單位前沒有數字則捨去大單位str = str.substr(1, str.length - 1);str = dw2[k2].concat(str);sum = 0;}}if (k1 == 3) //小單位到千則大單位進一{k2++;}}//轉換小數部分var strdig = "";if (dig != "") {var n = dig.charAt(0);if (n != 0) {strdig += dw[Number(n)] + "角"; //加數字}var n = dig.charAt(1);if (n != 0) {strdig += dw[Number(n)] + "分"; //加數字}}str += "元" + strdig;} catch(e) {return "0元";}return str;}//拆分整數與小數function splits(tranvalue) {var value = new Array('', '');temp = tranvalue.split(".");for (var i = 0; i < temp.length; i++) {value = temp;}return value;}
90、原生JavaScript常用的正則表達式大收集
匹配中文字符的正則表達式： [\u4e00-\u9fa5]匹配雙字節字符（包括漢字在內）：[^\x00-\xff]匹配空行的正則表達式：\n[\s| ]*\r匹配 HTML 標記的正則表達式：<(.*)>.*<\/\1>|<(.*) \/>匹配首尾空格的正則表達式：(^\s*)|(\s*$)匹配 IP 地址的正則表達式：/(\d+)\.(\d+)\.(\d+)\.(\d+)/g匹配 Email 地址的正則表達式：\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*匹配網址 URL 的正則表達式：http://(/[\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?sql 語句：^(select|drop|delete|create|update|insert).*[ DISCUZ_CODE_39 ]nbsp;非負整數：^\d+[ DISCUZ_CODE_39 ]nbsp;正整數：^[0-9]*[1-9][0-9]*[ DISCUZ_CODE_39 ]nbsp;非正整數：^((-\d+)|(0+))[ DISCUZ_CODE_39 ]nbsp;負整數：^-[0-9]*[1-9][0-9]*[ DISCUZ_CODE_39 ]nbsp;整數：^-?\d+[ DISCUZ_CODE_39 ]nbsp;非負浮點數：^\d+(\.\d+)?[ DISCUZ_CODE_39 ]nbsp;正浮點數：^((0-9)+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))[ DISCUZ_CODE_39 ]nbsp;非正浮點數：^((-\d+\.\d+)?)|(0+(\.0+)?))[ DISCUZ_CODE_39 ]nbsp;英文字符串：^[A-Za-z]+[ DISCUZ_CODE_39 ]nbsp;英文大寫串：^[A-Z]+[ DISCUZ_CODE_39 ]nbsp;英文小寫串：^[a-z]+[ DISCUZ_CODE_39 ]nbsp;英文字符數字串：^[A-Za-z0-9]+[ DISCUZ_CODE_39 ]nbsp;英數字加下劃線串：^\w+[ DISCUZ_CODE_39 ]nbsp;E-mail地址：^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+[ DISCUZ_CODE_39 ]nbsp;URL：^[a-zA-Z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\s*)?$ 或：^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*[ DISCUZ_CODE_39 ]nbsp;郵政編碼：^[1-9]\d{5}[ DISCUZ_CODE_39 ]nbsp;電話號碼：^((\(\d{2,3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}(\-\d{1,4})?[ DISCUZ_CODE_39 ]nbsp;手機號碼：^((\(\d{2,3}\))|(\d{3}\-))?13\d{9}[ DISCUZ_CODE_39 ]nbsp;雙字節字符（包括漢字在內）：^\x00-\xff匹配首尾空格：(^\s*)|(\s*$)匹配 HTML 標記：<(.*)>.*<\/\1>|<(.*) \/>匹配空行：\n[\s| ]*\r提取信息中的網絡鏈接：(h|H)(r|R)(e|E)(f|F) *= *('|")?(\w|\\|\/|\.)+('|"| *|>)?提取信息中的郵件地址：\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*提取信息中的圖片鏈接：(s|S)(r|R)(c|C) *= *('|")?(\w|\\|\/|\.)+('|"| *|>)?提取信息中的 IP 地址：(\d+)\.(\d+)\.(\d+)\.(\d+)提取信息中的中國手機號碼：(86)*0*13\d{9}提取信息中的中國固定電話號碼：(\(\d{3,4}\)|\d{3,4}-|\s)?\d{8}提取信息中的中國電話號碼（包括移動和固定電話）：(\(\d{3,4}\)|\d{3,4}-|\s)?\d{7,14}提取信息中的中國郵政編碼：[1-9]{1}(\d+){5}提取信息中的浮點數（即小數）：(-?\d*)\.?\d+提取信息中的任何數字 ：(-?\d*)(\.\d+)?IP：(\d+)\.(\d+)\.(\d+)\.(\d+)電話區號：^0\d{2,3}$騰訊 QQ 號：^[1-9]*[1-9][0-9]*[ DISCUZ_CODE_39 ]nbsp;帳號（字母開頭，允許 5-16 字節，允許字母數字下劃線）：^[a-zA-Z][a-zA-Z0-9_]{4,15}[ DISCUZ_CODE_39 ]nbsp;中文、英文、數字及下劃線：^[\u4e00-\u9fa5_a-zA-Z0-9]+$
91、原生JavaScript實現窗體改變事件resize的操作（兼容所以的瀏覽器）
(function(){var fn = function(){var w = document.documentElement ? document.documentElement.clientWidth : document.body.clientWidth,r = 1255,b = Element.extend(document.body),classname = b.className;if(w < r){//當窗體的寬度小於1255的時候執行相應的操作}else{//當窗體的寬度大於1255的時候執行相應的操作}}if(window.addEventListener){window.addEventListener('resize', function(){ fn(); });}else if(window.attachEvent){window.attachEvent('onresize', function(){ fn(); });}fn();})();
92、原生JavaScript用正則清除空格分左右
function ltrim(s){ return s.replace( /^(\s*| *)/, ""); }function rtrim(s){ return s.replace( /(\s*| *)$/, ""); }function trim(s){ return ltrim(rtrim(s));}
93、原生JavaScript判斷變量是否空值
/*** 判斷變量是否空值* undefined, null, '', false, 0, [], {} 均返回true，否則返回false*/function empty(v){switch (typeof v){case 'undefined' : return true;case 'string' : if(trim(v).length == 0) return true; break;case 'boolean' : if(!v) return true; break;case 'number' : if(0 === v) return true; break;case 'object' :if(null === v) return true;if(undefined !== v.length && v.length==0) return true;for(var k in v){return false;} return true;break;}return false;}
94、原生JavaScript實現base64解碼
function base64_decode(data){var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,ac = 0,dec = "",tmp_arr = [];if (!data) { return data; }data += '';do {h1 = b64.indexOf(data.charAt(i++));h2 = b64.indexOf(data.charAt(i++));h3 = b64.indexOf(data.charAt(i++));h4 = b64.indexOf(data.charAt(i++));bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;o1 = bits >> 16 & 0xff;o2 = bits >> 8 & 0xff;o3 = bits & 0xff;if (h3 == 64) {tmp_arr[ac++] = String.fromCharCode(o1);} else if (h4 == 64) {tmp_arr[ac++] = String.fromCharCode(o1, o2);} else {tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);}} while (i < data.length);dec = tmp_arr.join('');dec = utf8_decode(dec);return dec;}
95、原生JavaScript實現utf8解碼
function utf8_decode(str_data){var tmp_arr = [],i = 0,ac = 0,c1 = 0,c2 = 0,c3 = 0;str_data += '';while (i < str_data.length) {c1 = str_data.charCodeAt(i);if (c1 < 128) {tmp_arr[ac++] = String.fromCharCode(c1);i++;} else if (c1 > 191 && c1 < 224) {c2 = str_data.charCodeAt(i + 1);tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));i += 2;} else {c2 = str_data.charCodeAt(i + 1);c3 = str_data.charCodeAt(i + 2);tmp_arr[ac++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));i += 3;}}return tmp_arr.join('');}
96、原生JavaScript獲取窗體可見範圍的寬與高
function getViewSize(){var de=document.documentElement;var db=document.body;var viewW=de.clientWidth==0 ? db.clientWidth : de.clientWidth;var viewH=de.clientHeight==0 ? db.clientHeight : de.clientHeight;return Array(viewW ,viewH);}
96、原生JavaScript判斷IE版本號（既簡潔、又向後兼容！）
var _IE = (function(){var v = 3, div = document.createElement('div'), all = div.getElementsByTagName('i');while (div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->',all[0]);return v > 4 ? v : false ;}());
97、原生JavaScript獲取瀏覽器版本號
function browserVersion(types) {var other = 1;for (i in types) {var v = types ? types : i;if (USERAGENT.indexOf(v) != -1) {var re = new RegExp(v + '(\\/|\\s|: )([\\d\\.]+)', 'ig');var matches = re.exec(USERAGENT);var ver = matches != null ? matches[2] : 0;other = ver !== 0 && v != 'mozilla' ? 0 : other;} else {var ver = 0;}eval('BROWSER.' + i + '= ver');}BROWSER.other = other;}
98、原生JavaScript判斷鼠標是否移出事件
99、原生JavaScript半角轉換爲全角函數function isMouseOut(e, handler) {if (e.type !== 'mouseout') {return false;}var reltg = e.relatedTarget ? e.relatedTarget : e.type === 'mouseout' ? e.toElement : e.fromElement;while (reltg && reltg !== handler) {reltg = reltg.parentNode;}return (reltg !== handler);}
function ToDBC(str){var result = '';for(var i=0; i < str.length; i++){code = str.charCodeAt(i);if(code >= 33 && code <= 126){result += String.fromCharCode(str.charCodeAt(i) + 65248);}else if (code == 32){result += String.fromCharCode(str.charCodeAt(i) + 12288 - 32);}else{result += str.charAt(i);}}return result;}
100、原生JavaScript全角轉換爲半角函數
function ToCDB(str){var result = '';for(var i=0; i < str.length; i++){code = str.charCodeAt(i);if(code >= 65281 && code <= 65374){result += String.fromCharCode(str.charCodeAt(i) - 65248);}else if (code == 12288){result += String.fromCharCode(str.charCodeAt(i) - 12288 + 32);}else{result += str.charAt(i);}}return result;}