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@@ -0,0 +1,29 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+</head>
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+<body>
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+ <script>
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+ // 1.定义数组
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+ var arr = [];
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+ // var arr = [1,2,3,4,5];
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+ arr[2]='12';
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+ arr[0] = '你好';
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+ arr[1] = 'hi'
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+ console.log(arr)
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+ // arr[x] 下标 默认从0开始
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+ // 2.定义数组
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+ var arr1 = new Array();
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+ arr1[0] = '12';
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+ console.log(arr1,'arr1');
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+ var arr3 = ['1',false,'98','01','hello'];
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+ for(var i=0;i<arr3.length;i++){
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+ console.log(i,'i')
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+ console.log(arr3[i])
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+ }
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+ </script>
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+</body>
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+</html>
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