how the concat function works javascript

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showing results for - "how the concat function works javascript"
Lou
22 Feb 2020
1var arr = [1, 2, 3, 4];
2var arr2 = [5, 6, 7, 8];
3
4const both = arr.concat(arr2);
5
6console.log(both);
7//[1, 2, 3, 4, 5, 6, 7, 8]
source
María Fernanda
06 May 2016
1let string1 = "Hello"
2let string2 = "World"
3
4let finalString = string1 + ", " + string2 + "!" // Hello, World!
Claudia
11 May 2020
1var aString="";
2aString.concat(value1, value2, ... value_n);
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