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