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javascript创建数组三种方式

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第一种方式:

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var arr = new Array();
arr[0] = new Array("left1","left2","left3");
arr[1] = new Array("right1","right2","right3");

alert(arr[1][2]);

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第二种方式:

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var arr = new Array
(
	new Array("left1","left2","left3"),
	new Array("right1","right2","right3")
);

alert(arr[1][2]);

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第三种方式:

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var arr = 
[
	[{"value":"left1"},{"value":"left2"},{"value":"left3"}],
	[{"value":"right1"},{"value":"right2"},{"value":"right3"}]
];

alert(arr[1][2].value);

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