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How to analyze the array concat? aiming at this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

The concat () method connects the current Array with another Array and returns a new Array:

Var arr = ['A','B','C']; var added = arr.concat ([1, 2, 3]); added; / / ['A','B','C', 1, 2, 3] arr; / / ['A','B','C']

Note that the concat () method does not modify the current Array, but returns a new Array.

In fact, the concat () method can take any element and Array, and automatically take apart the Array and add them all to the new Array:

Var arr = ['A','B','C']; arr.concat (1,2, [3,4]) / / the answers to the questions on how to analyze array concat are shared here. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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