javascript - 如何以自定义模式切片数组？

Question

我有这个数组:

var x = [1,2,3,4,5,"a","b","c",9,10];

我想将这个数组切成这样的模式:

var x = [[1,2,3],[2,3,4],[3,4,5],[4,5,"a"],[5,"a","b"],["a","b","c"],["b","c",9],["c",9,10]];

我使用了下面的代码并且能够得到 [[1,2,3],[4,5,"a"],["b","c",9],[10, 11,12]] 。但这对我不起作用。我需要获取上面的模式。

var stream = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
var x = ["a", "b", "c"];
var ad_time = 6;
var result = [];

var ad_index = stream.indexOf(ad_time);

if (~ad_index) {
    for (var i = 0; i < x.length; i++) {
        stream[ad_index + i] = x[i];
    }
}

while (stream.length > 0) {
    var chunk = stream.splice(0, 3);
    result.push(chunk);

}
console.log(JSON.stringify(result));

提前致谢!

Answer 1

这段代码应该做到这一点:

var x = [1,2,3,4,5,"a","b","c",9,10];

var new_array = [];

for (var i = 0; i < x.length - 2; i++) {
    new_array.push(x.slice(i, i + 3));
}