js数组定义

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本文链接： https://blog.csdn.net/qq_38188047/article/details/100529666

方式1：

			//一维数组
			var arr = new Array(1,true,"hello");
			//取值
			console.log(arr[0]);//1
			//二维数组
			var arr = new Array(new Array(1,true),new Array(2,"hello"));
			//取值
			console.log(arr[0][0]);//1

方式2：

			//一维数组
			var arr1 = new Array(3);
			//赋值
			arr1[0] = "张三";
			arr1[1] = true;
			//取值
			console.log(arr1[0]);/ /张三
			//二维数组
			//相当于[2][3]
			var arr1 = new Array(new Array(3),new Array(3));
			//赋值
			arr1[0][0] = "张三";
			arr1[1][1] = true;
			//取值
			console.log(arr1[0][0]);/ /张三

方式3：

			//一维数组
			var arr2 = [1,true,"hello"];
			//取值
			console.log(arr2[0]);//1
			//二维数组
			var arr2 = [	["hello",1],	["world",2] ];
			//取值
			console.log(arr2[0][1]);//1