JS变量提升test 

<!--@description-->
<!--@author beyondx-->
<!--@date Created in 2022/07/30/ 22:49-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <script>
        var a = 12;
        function abc() {
            alert(a);
            var a = 10;
        }
        abc();
    </script>
</body>
</html>

posted on 2022-07-30 22:52  beyondx  阅读(5)  评论(0)  编辑  收藏  举报

导航