如何合并三个数组并用“：”连接它们

Question

var a = ["a","b"];
var b = ["c","d"];
var c = ["e","f"];

So these are the three arrays. I want the output as: var d = [ab:cd:ef];

How can it be acheived either using javascript or jquery?

Answer 1

You can do it using a map and joins

var d = [ a, b, c ].map(sub => sub.join("-")).join(":");

The first map takes every subarray and joins them (d is ["ab", "cd", "ef"] ), then the last join creates a string out of them by joining the strings using colons.