JS的按钮点击事件要怎么写?
<scripttype="text/javascript"src="js.js"></script></head><body><inputid="but1"type="b...
<script type="text/javascript" src="js.js">
</script>
</head>
<body>
<input id="but1" type="button" value="全选" />
</body>
</html> 展开
</script>
</head>
<body>
<input id="but1" type="button" value="全选" />
</body>
</html> 展开
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