<input type="button" value="百度" onclick="javascript:showUrl(this)">
<input type="button" value="Google" onclick="javascript:showUrl(this)">
<input type="button" value="微软" onclick="javascript:showUrl(this)">
<input type="button" value="博客园" onclick="javascript:showUrl(this)">
<input type="button" value="阿舜的博客" onclick="javascript:showUrl(this)">那么。怎么写这个 showUrl函数呢? 我想大多数人可能会这样写.
<script type="text/javascript">
// by Go_Rush(阿舜) from http://ashun.cnblogs.com/
function showUrl(element){
var url;
switch (element.value){
case "百度": url="http://www.baidu.com/" ;break;
case "Google": url="http://www.google.com/" ;break;
case "微软": url="http://www.microsoft.com/";break;
case "博客园": url="http://www.cnblogs.com/" ;break;
case "阿舜的博客": url="http://ashun.cmblogs.com/" ;break;
default: url=""
}
alert(url)
}
</script>

<script type="text/javascript">
// by Go_Rush(阿舜) from http://ashun.cnblogs.com/
var arrText=["百度","Google","微软","博客园","阿舜的博客"];
var arrUrl=["http://www.baidu.com/","http://www.google.com/","http://www.microsoft.com/","http://www.cnblogs.com/","http://ashun.cmblogs.com/"]
function showUrl(element){ //用双数组方法
var value=element.value;
for(var i=0;i<arrText.length;i++){
if (arrText[i]===value) return alert(arrUrl[i])
}
}
</script>

<script type="text/javascript">
// by Go_Rush(阿舜) from http://ashun.cnblogs.com/
var arr=[
["百度" ,"http://www.baidu.com/"],
["Google" ,"http://www.google.com/"],
["微软" ,"http://www.microsoft.com/"],
["博客园" ,"http://www.cnblogs.com/"],
["阿舜的博客" ,"http://ashun.cmblogs.com/"]
]；
function showUrl(element){ //用二维数组方法
var value=element.value;
for(var i=0;i<arr.length;i++){
if (arr[i][0]===value) return alert(arr[i][1])
}
}
</script>

<script type="text/javascript">
// by Go_Rush(阿舜) from http://ashun.cnblogs.com/
var hash={
"百度" :"http://www.baidu.com/",
"Google" :"http://www.google.com/",
"微软" :"http://www.microsoft.com/",
"博客园" :"http://www.cnblogs.com/",
"阿舜的博客" :"http://ashun.cmblogs.com/"
};
function showUrl(element){ //使用哈稀对象
alert(hash[element.value])
}
</script>