蜗牛移动话费套现:JS问题帮我
<option value="" selected>不使用</option>
<option value="http://localhost/bbs/headico/pic/1.gif" >http://localhost/bbs/headico/pic/1.gif</option>
</select>
<script language="javascript1.1">
var b=window.document.form1.headico.selectedIndex;
var a=window.document.form1.headico.options[b].text;
window.document.getElement["im"].src=a;
}
</script>
<img id="im" name="im" src="">
我要怎么来通过改变下拉菜单来改变图片的显示呢?
我给你改了一下,大致完成你的要求了
<form name=form1>
<select name="headico" id="headico" onChange="headpic()">
<option value="" selected>不使用</option>
<option value="http://localhost/bbs/headico/pic/1.gif" >http://localhost/bbs/headico/pic/1.gif</option>
</select>
</form>
<script language="javascript1.1">
function headpic()
{
var b=document.form1.headico.selectedIndex;
var a=document.form1.headico.options[b].text;
document.im.src=a;
}
</script>
<img id="im" name="im" src="">
<html>
<head>
</head>
<body>
<select name="headico" id="headico" onChange="headpic()">
<option value="" selected>不使用</option>
<option value="图片地址路径地址要对哦呵呵," >图片..</option>
</select>
<script language="javascript1.1">
function headpic()
{
//alert("d"); //测试是否执行的代码
im.src = headico.value;
}
</script>
<img id="im" name="im" src="">
</body>
</html>
恩。不错!