編程常見問題&技巧

1.有沒有辦法用javascript屏蔽IE的表單自動完成功能？
<input type=password autocomplete="off"> 強行關閉自動記憶輸入

2.ASP導出Excel文件
加以下幾句並輸出爲表就行了：
<%@ LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
response.contentType = "application/vnd.ms-excel"
response.addheader "Content-Disposition", "attachment; filename=文件名.xls"

3.PHP導出Excel文件
header("Content-type:application/vnd.ms-excel");
header("Content-Disposition:filename=文件名.xls");

4.JS 選定對像
οnfοcus="this.select();'"

5.JS事件
οnfοcus="this.select();'"
onblur
onkeydown
onkeypress

6.JS判斷鍵盤按鍵

function keyDownAuto(obj){ //or document.onkeydown
var GetkeyCode = event.keyCode;
 if(GetkeyCode==38) {  //鍵盤上鍵
 //
 }

 if(GetkeyCode==40){  //鍵盤下鍵
 //
 }

 if(GetkeyCode==37){  //鍵盤左鍵
 //
 }

 if(GetkeyCode==39){  //鍵盤右鍵
 //
 }
}

7.ASP
response.ContentType = "text/xml"
response.Expires = 0

8.XML

<Script language="JavaScript">

var objSelect = document.all.ToQuID;

function GetQuList(PID) {
 if (window.XMLHttpRequest) {
  req = new XMLHttpRequest();
    } else if (window.ActiveXObject) {
  req = new ActiveXObject("Microsoft.XMLHTTP");
    }
 DelOption();
 AddOption("正在獲取列表...");
    req.onreadystatechange = ListQu;
 var PostDate = "PID=" + PID;
    req.open("POST","GetQuList.asp",true);
 req.setRequestHeader("Content-length",PostDate.length);
 req.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    req.send(PostDate);
}

function ListQu() {
    if (req.readyState == 4) {
     if (req.status == 200) {
   if (req.responseXML.xml != "") {
       //window.alert ("<xmp>" + req.responseXML.xml + "</xmp>");
    InputList();
   }
     } else {
      window.alert ("Error!");
     }
    }
}

function InputList() {
 var xmlDom = new ActiveXObject("MSXML2.DOMDocument.3.0");
 xmlDom.validateOnParse =true;
 xmlDom.async = false;
 xmlDom.loadXML(req.responseXML.xml);
 if (xmlDom.parseError.errorCode!=0) {
  window.alert ("出錯：" + xmlDom.parseError.reason);
 } else {
  objNode = xmlDom.documentElement.childNodes;;
  DelOption();
  AddOption("選擇問題...");
  for (i=0;i<objNode.length;i++) {
   strName = objNode.item(i).childNodes.item(1).text;
   strID = objNode.item(i).childNodes.item(0).text;
   AddOption(strName,strID);
  }
 }
}

// 刪除所有選項
function DelOption(){
 while (objSelect.length > 0) {
  objSelect.remove(0);
 }
}

// 添加選項
function AddOption(strName,strValue){
 var objOption = new Option(strName,strValue);
 objSelect.options[objSelect.options.length] = objOption;
}
</Script>