【JavaScript】JS中类似宏变量、宏替换的用法。

Ad大成 2022-05-24 阅读 66

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>


</body>


<script type="text/javascript">

    var a1 = "张飞";
    var a2 = "李白";
    alert("改前的a2=" + a2);

    var i = 2;

    comm = "a" + i + "=" + "'中国人'";

    alert(comm);

    eval(comm);
    alert("改后的a2=" + a2);


</script>


</html>

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