tryjsref_oper_incr2 在线代码实例

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运行代码

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool教程(w3cschool.cn)</title>
</head>
<body>
<p>y = 5, 计算 x = y++, y 和 x 为:</p>
<button onclick="myFunction()">点我</button>
<p><strong>注意:</strong> x 和 y的值将会改变。</p>
<p id="demo1"></p>
<p id="demo2"></p>
<script>
function myFunction() {
    var y = 5;
    var x = y++;
    document.getElementById("demo1").innerHTML = y;
    document.getElementById("demo2").innerHTML = x;
}
</script>
</body>
</html>
 
 
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运行结果
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