javascript merge multidimensional array

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Giulia
17 Jan 2018
1const array1 = ['a', 'b', 'c'];
2const array2 = ['d', 'e', 'f'];
3const array3 = [...array1, ...array2];
4
5console.log(array3);
6// expected output: Array ["a", "b", "c", "d", "e", "f"]
Jacopo
15 Sep 2017
1const _questions = _.map(this.sections, section => section.questions);
2const questions  = Array.prototype.concat.apply([], _questions);
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