动态改变onclick的值, 想写个JS涵数,先给onClick赋值,再去点击被赋值的HTML控件.为什么不行,请高人看.

<SCRIPT type="text/javascript" language="javascript">        function init(){
var vWidth = "100";
var vHeight = "100";
var vImgPath = "1.jpg";
var vonClick = "playVideo";
var vonMouseOver = "playVideo";
var vonMouseOut = "playVideo";document.getElementById("playButton1").width = vWidth ;   //可以显示
document.getElementById("playButton1").height= vHeight ;//可以显示
document.getElementById("playButton1").src = vImgPath ;//可以显示
document.getElementById("playButton1").onClick = vonClick ; //不可以.
document.getElementById("playButton1").onMouseOver = vonMouseOver ;//不可以.
document.getElementById("playButton1").onMouseOut = vonMouseOut ;//不可以.
        }        function playVideo() {
            :
       }
</SCRIPT>
<BODY onload=init()>
<IMG src="" name="playButton1" width="" height="" border="0" id="playButton1" onClick="" onMouseOver="" onMouseOut="" class="link"/>
        :
        :

解决方案 »

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var vWidth = "100";
var vHeight = "100";
var vImgPath = "1.jpg";
var vonClick = playVideo;
var vonMouseOver = playVideo;
var vonMouseOut = playVideo;document.getElementById("playButton1").width = vWidth ;   //可以显示
document.getElementById("playButton1").height= vHeight ;//可以显示
document.getElementById("playButton1").src = vImgPath ;//可以显示
document.getElementById("playButton1").onclick = vonClick ; //不可以.
document.getElementById("playButton1").onmouseover = vonMouseOver ;//不可以.
document.getElementById("playButton1").onmouseout = vonMouseOut ;//不可以.
document.getElementById("playButton1").setAttribute("onclick",vonClick);
joohnnie() ( ) 信誉：100  2007-8-31 15:18:56  得分: 0
var vonClick = playVideo;
lihui_shine(浪尖赏花) ( ) 信誉：100  2007-08-31 15:34:21  得分: 0
var vonClick = playVideo;那如果被调函数有参数该怎么办??
     function playVideo(a) {
            :
       }
楼上的不对，
setAttribute只是给属性赋值，并不能给事件赋值，
如果有参数用闭包
var vonClick = playVideo("t")；
function playVideo(t){
return funtion (){
alert(t);
}
}
怎么会不行呢？
下面代码IE测试通过<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>new page</title>
<SCRIPT type="text/javascript" language="javascript">
function init(){
var vWidth = "100";
var vHeight = "100";
var vImgPath = "1.jpg";
var vonClick = playVideo("参数1");
var vonMouseOver = playVideo("参数2");
var vonMouseOut = playVideo("参数3");document.getElementById("playButton1").width = vWidth ;   //可以显示
document.getElementById("playButton1").height= vHeight ;//可以显示
document.getElementById("playButton1").src = vImgPath ;//可以显示
document.getElementById("playButton1").onclick = vonClick ; //不可以.
document.getElementById("playButton1").onmouseover = vonMouseOver ;//不可以.
document.getElementById("playButton1").onmouseout = vonMouseOut ;//不可以.
}function playVideo(t) {
return function(){
alert(t);
}
}
</SCRIPT>
</head>
<BODY onload=init()>
<IMG src="" name="playButton1" width="" height="" border="0" id="playButton1" onClick="" onMouseOver="" onMouseOut="" class="link"/>
</body>
</html>
lihui_shine(浪尖赏花) ( ) 信誉：100  2007-08-31 15:34:21  得分: 0  var vonClick = playVideo;document.getElementById("playButton1").onclick = vonClick ;_________________________________________________
以上成功.
以下失败.
---------------------------   如果有参数用闭包
var vonClick = playVideo("t")；
function playVideo(t){
return funtion (){
alert(t);
}
}浪尖兄,这个办法是行的通的.可有参数的办法行不通,还没点击alert(t);  就出来了.再求:
var vonClick = playVideo("参数1");
var vonMouseOver = playVideo("参数2");
var vonMouseOut = playVideo("参数3");你3个用的是同一个函数，onmouseover，鼠标移上去就触发了，还用点吗，呵呵onmouseover 鼠标移上去时触发的事件
onmouseout 鼠标移开去时触发的事件
试试这个，让你看得清楚些<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>new page</title>
<SCRIPT type="text/javascript" language="javascript">
function init(){
var vWidth = "100";
var vHeight = "100";
var vImgPath = "1.jpg";
var vonClick = playVideo("单击了");
var vonMouseOver = playVideo("鼠标移上来了");
var vonMouseOut = playVideo("鼠标移出去了");document.getElementById("playButton1").width = vWidth ;   //可以显示
document.getElementById("playButton1").height= vHeight ;//可以显示
document.getElementById("playButton1").src = vImgPath ;//可以显示
document.getElementById("playButton1").onclick = vonClick ; //不可以.
document.getElementById("playButton1").onmouseover = vonMouseOver ;//不可以.
document.getElementById("playButton1").onmouseout = vonMouseOut ;//不可以.
}function playVideo(t) {
return function(){
document.getElementById("div1").innerHTML=t;
}
}
</SCRIPT>
</head>
<BODY onload=init()>
<IMG src="" name="playButton1" width="" height="" border="0" id="playButton1" onClick="" onMouseOver="" onMouseOut="" class="link"/>
<div id=div1></div>
</body>
</html>
用浪尖兄的上述方法确实是可以的,但在我这里就是行不通.我的 vonClick 的值,是通过XML里面取出来的. XML相关:
<ControlDesign>
<Grouping name="Player" >
<Passing No="1">
  <onClick>playVideo('mov/s8.wmv')</onClick>
</Passing>
</Grouping>
</ControlDesign>取数据:  JS xmlDoc = new ActiveXObject("Microsoft.XMLDOM"); xmlDoc.load("C:\\design.xml"); var e = xmlDoc.documentElement.selectNodes("/ControlDesign/Grouping"); var Pass = e.item(0).selectNodes("./Passing");var vonClick = Pass[0].selectSingleNode("onClick").text;
难到跟循环有关..    干脆把所有的JS代码贴给你.  <Script Language="JavaScript">function init(){ xmlDoc = new ActiveXObject("Microsoft.XMLDOM"); xmlDoc.load("C:\\design.xml"); var e = xmlDoc.documentElement.selectNodes("/ControlDesign/Grouping"); for(i=0;i< e.length ;i++) { var str = e[i].getAttribute("name").toString(); if(str == "Img_Player") {
　
var Pass = e.item(i).selectNodes("./Passing"); for(j=0;j< Pass.length ;j++) { var vName = Pass[j].selectSingleNode("Name").text;

var vWidth = Pass[j].selectSingleNode("Width").text;

var vHeight = Pass[j].selectSingleNode("Height").text;

var vImgPath = Pass[j].selectSingleNode("Image").text; var vonClick = Pass[j].selectSingleNode("onClick").text; var vonMouseOver = Pass[j].selectSingleNode("onMouseOver").text; var vonMouseOut = Pass[j].selectSingleNode("onMouseOut").text; document.getElementById(vName).width = vWidth ;
document.getElementById(vName).height= vHeight ;
document.getElementById(vName).src = vImgPath ;
    
document.getElementById(vName).onMouseOver = vonMouseOver ;
document.getElementById(vName).onMouseOut = vonMouseOut ;
}
}
}
}function playVideo(u) {
return function(){
alert(u);          //  加载时,会出来一次,再就报错了.

}
}
function M_Img_Over(Nm_Img,Nm_Jpg){
return function(){
alert("M_Img_Over"); document.all(Nm_Img).src = Nm_Jpg ;
}
}</Script>
</HEAD><BODY onload="init()">
   :
   :
   :
相关XML:
<?xml version='1.0' encoding='UTF-8'?>
<ControlDesign>
<Grouping name="Img_Player" >
<Passing No="1">
<Name>s01</Name>
  <Width>98</Width>
  <Height>66</Height>
  <Image>images/s01.jpg</Image>
  <onClick>playVideo('mov/s1.wmv')</onClick>
  <onMouseOver>M_Img_Over('s01','images/s01b.jpg')</onMouseOver>
  <onMouseOut>M_Img_Over('s01','images/s01.jpg')</onMouseOut>
</Passing>
<Passing No="2">
<Name>s02</Name>
  <Width>98</Width>
  <Height>66</Height>
  <Image>images/s02.jpg</Image>
  <onClick>playVideo('mov/s2.wmv')</onClick>
  <onMouseOver>M_Img_Over('s02','images/s02b.jpg')</onMouseOver>
  <onMouseOut>M_Img_Over('s02','images/s02.jpg')</onMouseOut>
</Passing>
</Grouping>
</ControlDesign>
闭包中或者常参使用：
obj.onmouseover = function() { playVideo("鼠标移出去了"); };所有情况
eval("obj.onmouseover = function() { playVideo(\"" + str + "\"); }");
但如果参数是对象需要在闭包中，仅适用：
obj.onmouseover = function() { playVideo(o); };
playVideo("单击了");
playVideo("鼠标移上来了");
playVideo("鼠标移出去了");我这些值是从XML中读出来的,我怎么设都不行,,再求...
<script type="text/javascript">
window.onload = function () {
var vWidth = "150";
var vHeight = "60";
var vImgPath = "http://www.csdn.net/ui/styles/public_header_footer/logo_csdn.gif";
var vonClick = playVideo;
var vonMouseOver = playVideo;
var vonMouseOut = playVideo;
Function.prototype.raFunc = function () {
var wc = this, arg = Array.apply(null, arguments);
return function () {
wc.apply(null, arg);
};
};

var playButton1 = document.getElementById("playButton1");

playButton1.width = vWidth ;   //可以显示
playButton1.height= vHeight ;//可以显示
playButton1.src = vImgPath ;//可以显示
playButton1.onclick = vonClick.raFunc("click") ; //不可以.
playButton1.onmouseover = vonMouseOver.raFunc("over") ;//不可以.
playButton1.onmouseout = vonMouseOut.raFunc("out") ;//不可以.
};
var playVideo = function () {
alert("这个是CSDN的LOGO：形式参数个数有 " + arguments.length + " 个\n" + arguments[0]);
};
</script>
<input id="playButton1" type="image" />
以上方法,点击事件可以,onmouseover 和 onmouseout  不行..再求?
onmouseover 和 onmouseout  不行..再求?
muxrwc(需时越兔) ( ) 信誉：100
playButton1.onmouseover = vonMouseOver.raFunc("img1","img2") ;
playButton1.onmouseout = vonMouseOut.raFunc("img2","img1") ;
var playVideo = function () {
//图片变换;//行不通.
document.all(arguments[0]).src = arguments[1] ;};浪兄的图片变换也行不通.再求
<script type="text/javascript">
Function.prototype.raFunc = function () {
var wc = this, arg = Array.apply(null, arguments), obj = arg.shift();
return function () {
wc.apply(obj, arg);
};
};
var load_img = {
imgs : [],
load : function () {
return (this.imgs[this.imgs] = (new Image)).src = arguments[0];
}
};
window.onload = function () {
var vWidth = "150", vHeight = "60"
, imgs = [
load_img.load("http://www.csdn.net/ui/styles/public_header_footer/logo_csdn.gif"),
load_img.load("http://zi.csdn.net/120.60_5.gif")
]
, vonClick = playVideo, vonMouseOver = playVideo, vonMouseOut = playVideo
, playButton1 = document.getElementById("playButton1");

playButton1.width = vWidth, playButton1.height = vHeight, playButton1.src = imgs[0]
, playButton1.onclick = vonClick.raFunc(playButton1, "click")
, playButton1.onmouseover = vonMouseOver.raFunc(playButton1, imgs[1])
, playButton1.onmouseout = vonMouseOut.raFunc(playButton1, imgs[0]);
};
var playVideo = function (a) {
if (a != "click") {
this.src = a;
} else alert("click");
};
</script>
<input id="playButton1" width="150" height="60" type="image" />
<SCRIPT type="text/javascript" language="javascript">        function init(){
var vWidth = "100";
var vHeight = "100";
var vImgPath = "1.jpg";
//var  vonClick =  playVideo();
//var vonMouseOver = playVideo();
//var vonMouseOut = playVideo();document.getElementById("playButton1").width = vWidth ;   //可以显示
document.getElementById("playButton1").height= vHeight ;//可以显示
document.getElementById("playButton1").src = vImgPath ;//可以显示
document.getElementById("playButton1").onclick=playVideo;//不可以.
document.getElementById("playButton1").onmouseover=playVideo;//不可以.
document.getElementById("playButton1").onmouseout=playVideo;//不可以.
        }    function playVideo() {
          ...       }</SCRIPT>
<BODY onload=init()>
<IMG src="" name="playButton1" width="" height="" border="0" id="playButton1" onClick="" onMouseOver="" onMouseOut="" class="link"/>
很感谢大家,尤其是lihui_shine(浪尖赏花)  和 muxrwc(需时越兔)   这俩位大侠级的人物.但还是搞不懂,这个起什么作用???Function.prototype.raFunc = function () {
var wc = this, arg = Array.apply(null, arguments), obj = arg.shift();
return function () {
wc.apply(obj, arg);
};
};学习的路,还很长.