前端項目常用方法總結

var u = navigator.userAgent;
var lastTop = 0

// 小於10自動補0
function formatNumber (n) { 
    var str = n.toString()
    return str[1] ? str : '0'+str
}

正則驗證類

var checkFormat = {
    /**
     * android終端
     * @return {Boolean}
     */
    isAndroid: function() {
        return u.indexOf('Android') > -1 || u.indexOf('Adr') > -1;
    },
    /**
     * ios終端
     * @return {Boolean}
     */
    isIOS: function(){
        return !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/);
    },
    /**
     * 手機正則驗證
     * @param {Number} phoneNum 手機號碼
     * @return {Boolean}
     */
    isMobilePhone: function (phoneNum) {
        return /^1[3456789]\d{9}$/.test(phoneNum)
    },
    /**
     * 郵箱驗證
     * @param {String} email 郵箱
     * @return {Boolean}
     */
    isEmail: function(email) {
        var emailRex = /\w[-\w.+]*@([A-Za-z0-9][-A-Za-z0-9]+\.)+[A-Za-z]{2,14}/  //郵箱正則
        return emailRex.test(email)
    },
    /**
     * 5-12位QQ驗證
     * @param {Number} qq qq號碼
     * @return {Boolean}
     */
    isQQ: function(qq) {
        var qqRex = /^[1-9][0-9]{4,11}$/;
        return qqRex.test(qq)
    },
    /**
     * 2-n位漢字名字驗證
     * @param {String} name 漢字
     * @param {Number} n 名字的位數
     * @return {Boolean}
     */
    isCName: function(name,n) {
        var nameRex = new RegExp("^[\u4e00-\u9fa5]{2,"+n+"}$") //姓名驗證
        return nameRex.test(name)
    },
    /**
     * 身份證號碼驗證
     * @param {String | Number} IdNumber 身份證號碼
     * @return {Boolean}
     */
    isIdNum: function(IdNumber) {
        var idCardRegex = {
            //18位身份證簡單校驗
            IDCARD_18_SIMPLE_PATTERN: /^(?:1[1-5]|2[1-3]|3[1-7]|4[1-6]|5[0-4]|6[1-5])\d{4}(?:1[89]|20)\d{2}(?:0[1-9]|1[0-2])(?:0[1-9]|[12]\d|3[01])\d{3}(?:\d|[xX])$/,
            //15位身份證簡單校驗
            IDCARD_15_SIMPLE_PATTERN: /^(?:1[1-5]|2[1-3]|3[1-7]|4[1-6]|5[0-4]|6[1-5])\d{4}\d{2}(?:0[1-9]|1[0-2])(?:0[1-9]|[12]\d|3[01])\d{3}$/
        }
        return idCardRegex.IDCARD_18_SIMPLE_PATTERN.test(IdNumber) || idCardRegex.IDCARD_15_SIMPLE_PATTERN.test(IdNumber)
    }
}

cookie 方法類

var cookieFormat = {
    /**
     * 設置cookie
     * @param {String} cname cookie名
     * @param {String} cvalue cookie值
     * @param {String} path path值
     * @param {String} options 保存時間
     * @param {String} domain domain值
     */
    setCookie: function(cname, cvalue, path, options, domain) {
        var d = new Date();
        var exdays = 30;
        if (options) {
            exdays = options;
        };
        d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
        var expires = "expires=" + d.toUTCString();
        if (domain) {
            expires = expires + ";domain=" + domain
        }
        document.cookie = cname + "=" + cvalue + ";path=" + path + ";" + expires;
    },
    /**
     * 獲取cookie
     * @param {String} cname cookie名
     * @return {String} 
     */
    getCookie: function(cname) {
        var name = cname + "=";
        var ca = document.cookie.split(';');
        for(var i=0; i<ca.length; i++) {
            var c = ca[i];
            while (c.charAt(0)==' ') c = c.substring(1);
            if (c.indexOf(name) != -1) return c.substring(name.length, c.length);
        }
        return "";
    },
    /**
     * 刪除cookies 
     * @param {cname} cookie名
     */
    delCookie: function(cname) { 
        var cval = getCookie(cname)
        if (cval!=null) {
            document.cookie = cname + '=' + cval + ';expires=' + (new Date(0)).toGMTString()
        }
    } 
}

URL,參數類

var urlFormat = {
    /**
     * 獲取當前URL參數 
     * @param {String} name 參數名
     */
    getUrlParam: function(name) {
        var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
        var r = window.location.search.substr(1).match(reg);
        if (r != null) return decodeURI(r[2]);
        return null; //返回參數值
    },
    /**
     * 拼接url 
     * @param {Object} params 需拼接的參數對象
     * @param {String} url 需拼接的url
     */
    concatUrl: function(params, url) {
        var urlWith = url.includes('?') ? url : url+'?'
        for (let key of Object.keys(params)) {
            urlWith =  urlWith + '&' + key + '=' + params[key]
        }
        return urlWith
    }
}

格式化時間類

var dateFormat = {
    stringifyDate: function(datetime, simple) {
        if(simple === undefined) {
            simple = false
        }
        // let weekMap = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']
        var weekMap = ['星期日', '星期一', '星期二', '星期三', '星期四', '星期五', '星期六']
        datetime = new Date(datetime)
        var year = datetime.getFullYear()
        var simpleYear = datetime.getYear() - 100
        var month = datetime.getMonth() + 1
        month = month > 9 ? month : '0' + month
        var day = datetime.getDate()
        day = day > 9 ? day : '0' + day
        var hour = datetime.getHours()
        hour = hour > 9 ? hour : '0' + hour
        var min = datetime.getMinutes()
        min = min > 9 ? min : '0' + min
        var week = datetime.getDay()
        week = weekMap[week]
        var thatDay = (new Date(year, month - 1, day, 0, 0, 0)).getTime()
      
        if (simple) {
          return {
            withYear: day+'/'+month+'/'+simpleYear,
            withMonth: month+'-'+day,
            withDay: week,
            withLastDay: `昨天`,
            withHour: hour+':'+min,
            thatDay
          }
        } else {
          return {
            withYear: year+'-'+month+'-'+day+' '+hour+':'+min,
            withMonth: month+'-'+day+' '+hour+':'+min,
            withDay: week+' '+hour+':'+min,
            withLastDay: '昨天 '+hour+':'+min,
            withHour: hour+':'+min,
            thatDay
          }
        }
    },
    /**
     * 格式化日期(格式化成類似聊天室時間) 如：昨天 07:00
     * @param {Number} datetime 需要轉換的時間戳
     * @param {Boolean} simple  需要轉換成的模式
     * @return {string}
     */
    formatDate: function(datetime, simple) {
        if(simple === undefined) {
            simple = false
        }
        var tempDate = (new Date()).getTime()
        var result = this.stringifyDate(datetime, simple)
        var thatDay = result.thatDay
        var deltaTime = (tempDate - thatDay) / 1000
    
        if (deltaTime < 3600 * 24) {
        return result.withHour
        } else if (deltaTime < 3600 * 24 * 2) {
        return result.withLastDay
        } else if (deltaTime < 3600 * 24 * 7) {
        return result.withDay
        } else if (deltaTime < 3600 * 24 * 30) {
        return result.withMonth
        } else {
        return result.withYear
        }
    },

    /**
     * 格式化時間 如：2019-10-10 12:00   2019/10/10 12:00
     * @param {Number} date 需要轉換的時間 new Date()
     * @param {Number} type  需要轉換成的類型 1=>年月日 時分秒 2=>年月日 3=>時分秒 4=>年月 5=>時分
     * @param {'-'|'/'} style  需要轉換成的模式
     * @return {string}
     */
    formatTime: function(date,type,style) {
        style = style === undefined ? '-' : style

        var year = date.getFullYear()
        var month = date.getMonth() + 1
        var day = date.getDate()

        var hour = date.getHours()
        var minute = date.getMinutes()
        var second = date.getSeconds()

        var t1 = [year, month, day].map(formatNumber).join(style)
        var t2 = [hour, minute, second].map(formatNumber).join(':')
        var t3 = [year, month].map(formatNumber).join(style)
        var t4 = [hour, minute].map(formatNumber).join(':')

        switch (type) {
            case 1: 
                return t1 + ' ' + t2
                break
            case 2:
                return t1
                break
            case 3: 
                return t2
                break
            case 4:
                return t3
                break
            case 5: 
                return t4
                break
            default :
                return t1 + ' ' + t2
                break
        }
    }
}

數組工具類

var arrayFormat = {
    /**
     * 將類數組轉化爲數組對象
     * @return {Array}
     */
    toArray: function (){
        return Array.prototype.slice.call(arguments)
    },
    /**
     * 判斷是否爲數組對象
     * @return {Boolean}
     */
    isArray: function (arr) {
        return arr != undefined && arr.constructor == Array
    },
    /**
     * 數組求和
     * @param {array} arr 數組
     * @return 
     */
    sum: function(arr) {
        if(!this.isArray(arr)){
            return result;
        }
        if(arr.length==0){
            return 0;
        }
        var result = arr[0];
        var length = arr.length;
        for(var i=1;i<length;i++){
            result += arr[i];
        }
        return result;
    },
    /**
     * 數組是否包含該元素
     * @param {array} arr 數組
     * @param {any} x 元素
     * @return {Boolean}
     */
    contains: function(arr, x){
        var result = false;
        if(!this.isArray(arr)){
            return result;
        }
        var length = arr.length;
        if(length==0){
            return result;
        }
        for(var i=0;i<length;i++){
            if(arr[i] == x){
                return true;
            }
        }
        return result;
    },
    /**
     * 數組打亂
     * @param {array} arr 數組
     * @return {Array}
     */
    shuffle: function(arr){
        if(!this.isArray(arr)){
            return arr;
        }
        var length = arr.length;
        for(var i=0;i<length;i++){
            var pos = parseInt(Math.random()*(length-i));
            var save = arr[i];
            arr[i] = arr[pos];
            arr[pos] = save;
        }
        return arr;
    },
    /**
     * 數組去重
     * @param {array} arr 數組
     * @return {Array}
     */
    unique: function(arr){
        if(!this.isArray(arr)){
            return arr;
        }
        var u = [];
        var length = arr.length;
        for(var i=0;i<length;i++){
            var o = arr[i];
            if(!this.contains(u,o)){
                u.push(o);
            }
        }
        return u;
    },
    /**
     * 數組最小值
     * @param {array} arr 數組
     * @return {Number}
     */
    min: function(arr){
        var result = 0;
        if(!this.isArray(arr)){
            return result;
        }
        var length = arr.length;
        if(length == 0){
            return result;
        }
        result = arr[0];
        for(var i=1;i<length;i++){
            var o = arr[i];
            if(o<result){
                result = o;
            }
        }
        return result;
    },
    /**
     * 數組最大值
     * @param {array} arr 數組
     * @return {Number}
     */
    max: function(arr){
        var result = 0;
        if(!this.isArray(arr)){
            return result;
        }
        var length = arr.length;
        if(length == 0){
            return result;
        }
        result = arr[0];
        for(var i=1;i<length;i++){
            var o = arr[i];
            if(o>result){
                result = o;
            }
        }
        return result;
    }
}

頁面高度類

var scrollFormat = {
    /**
     * 設置 或 獲取 scrolltop值
     * @param {Number} val (不傳表示獲取scrollTop值，傳表示設置scrollTop值)
     */
    scrollTop: function(val) {
        // 有val 爲賦值
        if (val !== null && val !== undefined) {
            setTimeout(function(){
                lastTop = val;
                document.body.scrollTop = val
                if(window.pageYOffset) {
                    window.pageYOffset = val
                }
                if (document.documentElement) {
                    document.documentElement.scrollTop = val
                }
            },100)
        } else {
            var temp = lastTop
            if(lastTop !=document.body.scrollTop&&document.body.scrollTop!=0){
                temp = document.body.scrollTop
            }else if(window.pageYOffset && lastTop != window.pageYOffset && window.pageYOffset!=0 ){
                temp = window.pageYOffset 
            }else if(document.documentElement && lastTop != document.documentElement.scrollTop && document.documentElement.scrollTop!=0){
                temp = document.documentElement.scrollTop
            }
            return temp
        }			
    },
    /**
     * 滾動條在Y軸上的滾動距離
     * @return {Number}
     */
    getScrollTop: function() {
        var scrollTop = 0, bodyScrollTop = 0, documentScrollTop = 0;
        if (document.body) {
            bodyScrollTop = document.body.scrollTop;
        }
        if (document.documentElement) {
            documentScrollTop = document.documentElement.scrollTop;
        }
        scrollTop = (bodyScrollTop - documentScrollTop > 0) ? bodyScrollTop : documentScrollTop;
        return scrollTop;
    },
    /**
     * 文檔的總高度
     * @return {Number}
     */
    getScrollHeight: function() {
        var scrollHeight = 0, bodyScrollHeight = 0, documentScrollHeight = 0;
        if (document.body) {
            bodyScrollHeight = document.body.scrollHeight;
        }
        if (document.documentElement) {
            documentScrollHeight = document.documentElement.scrollHeight;
        }
        scrollHeight = (bodyScrollHeight - documentScrollHeight > 0) ? bodyScrollHeight : documentScrollHeight;
        return scrollHeight;
    },
    /**
     * 瀏覽器視口的高度
     * @return {Number}
     */
    getWindowHeight: function() {
        var windowHeight = 0;
        if (document.compatMode == "CSS1Compat") {
            windowHeight = document.documentElement.clientHeight;
        } else {
            windowHeight = document.body.clientHeight;
        }
        return windowHeight;
    },
    /**
     * 是否滾動到底部
     * @return {Boolean}
     */
    isBottom: function(distance) {
        var bottomDistance = distance || 0;
        if (getScrollTop() + getWindowHeight() + bottomDistance >= getScrollHeight()) {
            return true;
        }
        else
            return false;
    }
}

數字計算類

var mathFormat = {
    /**
     * 四捨五入保留2位小數（不夠位數，則用0替補）
     * 強制保留兩位小數(四捨五入  2.3389 => 2.34)
     * @param {Number} x 需要轉換的數字
     * @return {String}
     */
    toFixed: function(x){
        var f = parseFloat(x)
        if (isNaN(f)) {
            return false
        }
        var a = Math.round(x * 100) / 100
        var s = a.toString()
        var rs = s.indexOf('.')
        if (rs < 0) {
            rs = s.length
            s += '.'
        }
        while (s.length <= rs + 2) {
            s += '0'
        }
        return s
    },

    //處理js在數字計算時，因爲IEEE精度丟失問題(處理支付問題是需要)
    //2.1*3=6.300000000000001
    add: function(a, b) {//相加
        var c, d, e;
        try {
          c = a.toString().split(".")[1].length;
        } catch (f) {
          c = 0;
        }
        try {
          d = b.toString().split(".")[1].length;
        } catch (f) {
          d = 0;
        }
        return e = Math.pow(10, Math.max(c, d)), (this.mul(a, e) + this.mul(b, e)) / e;
    },
    sub: function(a, b) {//相減
        var c, d, e;
        try {
          c = a.toString().split(".")[1].length;
        } catch (f) {
          c = 0;
        }
        try {
          d = b.toString().split(".")[1].length;
        } catch (f) {
          d = 0;
        }
        return e = Math.pow(10, Math.max(c, d)), (this.mul(a, e) - this.mul(b, e)) / e;
    },
    mul: function(a, b) {//乘法
        var c = 0,
          d = a.toString(),
          e = b.toString();
        try {
          c += d.split(".")[1].length;
        } catch (f) { }
        try {
          c += e.split(".")[1].length;
        } catch (f) { }
        return Number(d.replace(".", "")) * Number(e.replace(".", "")) / Math.pow(10, c);
    },
    div: function(a, b) {//除
        var c, d, e = 0,
          f = 0;
        try {
          e = a.toString().split(".")[1].length;
        } catch (g) { }
        try {
          f = b.toString().split(".")[1].length;
        } catch (g) { }
        return c = Number(a.toString().replace(".", "")), d = Number(b.toString().replace(".", "")), this.mul(c / d, Math.pow(10, f - e));
    }
}

前端項目常用方法總結

MpVue開發小程序整理

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前端項目常用方法總結

electron問題整理

Mac下配置sublime實現LaTeX

https://yachay.unat.edu.pe/blog/index.php?comment_area=format_blog&comment_component=blog&comment_co

linux以太網驅動總結