javascriptÅжϱäÁ¿ÊÇ·ñ¶¨Òå
Ö±½ÓʹÓÃ䶨ÒåµÄJavascript±äÁ¿Ê±£¬Ò³Ãæ»á±¨´í²¢ÎÞ·¨Ö´ÐУ¬±ÈÈç
if (varName=="")
{
}
ÐèÒªÏÈÅжϱäÁ¿ÊÇ·ñ¶¨Ò壬ʹÓÃtypeofº¯Êý¿ÉÒÔÅжϣ¬ÈçÏÂʹÓãº
if (typeof(ipaddr)=='undefined')
{
window.alert('ipaddr䶨Òå');
}
Ïà¹ØÎĵµ£º
Javascript »ñÈ¡radiobuttonlist£¨µ¥Ñ¡¿ò£©µÄÖµ
function check() {
var RadioButtonList1 = document.getElementById('<%=RadioButtonList1.ClientID%>');
......
Ëæ×Å»¥ÁªÍøµÄ·ÉËÙ·¢Õ¹£¬µØÇò±äµÃÔ½À´Ô½Ð¡£¬ÈËÃÇ¿ÉÒÔ¿çԽʱ¼äºÍ¿Õ¼äµÃ½çÏÞ½øÐн»Á÷ÓÚºÏ×÷¡£µ«ÊÇËæÖ®Ò²²úÉúÁËһЩËÁÒâ¸ãÆÆ»µµÄºÚ¿Í£¬Õâ¾ÍʹµÃ³ÌÐòÉè¼ÆÈËÔ±ÔÚ±àÖÆÓ¦ÓóÌÐòÖÐÒª¿¼Âǵ½ºÚ¿ÍÏ®»÷Õâ¸öÎÊÌ⣬ËùÒÔ×ÔÈ»¶øÈ»µØ¾Í»áÏëµ½±£»¤¡£±¾½Ú½Ì³Ì½«½ÌÄãÔõÑùÀûÓÃjavascript½øÐÐÃÜÂë±£»¤¡£ÀûÓà JavaScriptÀ´¶ÔÍøÒ³½øÐÐÃÜÂë±£»¤Óм¸ÖÖ· ......
1£¬ jsÖеÄÀàÊý×é¶ÔÏó
(1) arguments¶ÔÏó:
function(){
//arguments¶ÔÏóÊÇArguments¶ÔÏóʵÀý£¬ÊÇÒ»¸öÀàÊý×é¶ÔÏ󣬲¢ÓµÓÐÏÂÁз½·¨
alert(arguments instanceof Array);//false
arguments.callee(); //¶Ô×ÔÉíµÄµ÷Ó㬠ÓÃÓڵݹé
var c = arguments.caller; //¶Ôµ÷ÓÃ×ÔÉíº¯ÊýµÄ¸¸º¯Êý, Èç¹û ......
ÒÔ´´½¨°´Å¥ÎªÀý
<html>
<head>
<script>
function add1()
{
var obtn=document.createElement("input");
obtn.setAttribute("type","button");
obtn.setAttribute("value","test1");
document.body.appendChild(obtn);//×¢ÒâÈç¹ûÓÐf ......
×ªÔØ×Ô http://hi.baidu.com/leizuman/blog/item/b9e93f015e86f20e7bec2cde.html
1.xmlÎļþÈçÏ£º
<?xml version="1.0" encoding="UTF-8"?>
<zip>
<city>
mycity</city>
<state>mystate</state>
</zip>
2.¶Á´ËxmlµÄjavascriptÀý×Ó£º
<!DOCTYPE HTML PUBLIC "-//W3C/ ......