lovecoding
/
vipAllDay


			
				
					
						
						
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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>
        /**
         * 定义数组方式
        */
        var arr1 = ['hahah'];
        var arr = new Array();
        arr = [1,2,3,'545']
        console.log(arr);
        console.log(arr1);
        console.log(arr.length);
        for(var i =0;i<arr.length;i++) {
            console.log(arr[i],'下标')
        }
        console.log(arr[0])
        arr[4] = '哈哈'
        console.log(arr)
    </script>
</body>
</html>