[英]Copy array and push one element from another array to every copy
I have two arrays, let's say a = [1, 2, 3]
and b = [x, y, z].
我有两个数组,假设a = [1, 2, 3]
和b = [x, y, z].
How can I create third array like this c = [[1, 2, 3, x], [1, 2, 3, y], [1, 2, 3, z]]
from them? 我如何从它们创建像c = [[1, 2, 3, x], [1, 2, 3, y], [1, 2, 3, z]]
第三个数组?
Thanks. 谢谢。
You can use map()
method on b
and then concat()
each element on a
. 可以使用map()
方法在b
和然后concat()
上的每个元件a
。
var a = [1, 2, 3], b = ['x', 'y', 'z'] var result = b.map(e => a.concat(e)); console.log(result)
You can use .map()
to do this, like so: 您可以使用.map()
执行此操作,如下所示:
var a = [1,2,3]; var b = ["x", "y", "z"]; var c = b.map(function (elem) { return a.concat(elem); }); console.log(c);
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