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function QueryString(fieldName){
var urlString = location.search;
if (urlString != null) {
var typeQu = fieldName + "=";
var urlEnd = urlString.indexOf(typeQu);
if (urlEnd != -1) {
var paramsUrl = urlString.substring(urlEnd + typeQu.length);
var isEnd = paramsUrl.indexOf('&');
if (isEnd != -1) {
return paramsUrl.substring(0, isEnd);
}
else {
return paramsUrl;
}
}
return null;
}
}


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2: JavaScript code goes here
3: </script>
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1: <script language=”JavaScript”>
2: <!--
3: document.write(“Hello”);
4: // -->
5: </script ......

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1.       document.getElementById
2.       document.getElementsByName
3        &n ......

javascript call

javaScript
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call
([thisObj[,arg1[, arg2[,   [,.argN]]]]])
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thisObj
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JavaScript¶¯Ì¬¼ÓÔØCSSµÄÈýÖÖ·½·¨

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@import url(style.css);
/*Ö»ÄÜÓÃÔÚCSSÎļþÖлòÕßstyle±êÇ©ÖÐ*/
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ÓÃJavaScript¼ì²éÎļþÊÇ·ñ´æÔÚ

function checkImgAddr(url){
var xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
xmlhttp.open("post",url,false);
xmlhttp.send();
if(xmlhttp.readyState==4){
if(xmlhttp.status==404){
return "File Not Exist.";
}else if(xmlhttp.status == 200){
re ......
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