将数组中0-9随机打乱

function a(){
	var l = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
	var k = [];

	var lenl = 10;
	for(var i=0; i<10; i++){
		var index = Math.floor(Math.random() * lenl);
		k[i] = l[index];
		l[index] = l[lenl - 1];
		lenl -= 1;
	}

	console.log("k",k)
}


输出结果
Array(10)
0: 7
1: 6
2: 3
3: 9
4: 1
5: 5
6: 0
7: 4
8: 2
9: 8