<input type=button value="提交" onclick="click(this)">
<input type=button value="预览 onclick="click(this)">
function click(obj)
{
if(obj.value="提交")
alert("這是提交動作");
else
alert("这个是预览");
}
<input type=button value="预览 onclick="click(this)">
function click(obj)
{
if(obj.value="提交")
alert("這是提交動作");
else
alert("这个是预览");
}
<head>
<script type="text/javascript">
function whichElement()
{
var tname
tname=event.srcElement.value
alert("You clicked on a " + tname )
}
</script>
</head><body><button onclick="whichElement()" value="button1">1111111</button>
<button onclick="whichElement()" value="button2">2222222</button>
<button onclick="whichElement()" value="button3">3333333</button>
</body></html>