<!DOCTYPE HTML>
<html>
<head>
<title>累加按钮</title>
<mate charset="utf-8" />
<style type="text/css">
*{ padding: 0px; margin: 0px; text-align: center; }
.app3{ margin: 30px auto; }
.app3 input{ width: 40px; height: 34px; font-size: 20px; cursor: pointer; }
</style>
</head>
<body>
<div class="app3">
<input type="button" value="0" />
</div>
<script type="text/javascript">
window.onload = function(){
var addbtn = document.getElementsByTagName("input")[0];
var number = 0;
addbtn.onclick = function(){
number++;
this.value = number;
alert(number);
}
}
</script>
</body>
</html>js累加按钮
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转载自blog.csdn.net/qq_44254672/article/details/91396018
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