如何在自定义模式中切片数组?
我有这个数组:
var x = [1,2,3,4,5,"a","b","c",9,10];
我想将这个数组切分成这种模式:
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,并能够得到[[1,2,3],[4,5,"a"],["b","c",9],[10,11,12]]
。 但是这对我不起作用。 我需要得到上面的模式。
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));
非常感谢!
你可以用一个简单的for
循环来实现它:
var x = [1,2,3,4,5,"a","b","c",9,10]; var result = []; for (var i = 0, il = x.length - 2; i < il; i++) { result.push([x[i], x[i + 1], x[i + 2]]); } console.log(result);
这段代码应该这样做:
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)); }