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[ES6] 13. Using the ES6 spread operator ...
The spread operator (...) allows you to "explode" an array into its individual elements.
Spreate an array:
console.log([1,2,3]); // [1, 2, 3] console.log(...[1,2,3]); // 1 2 3
Spread out the second array and push that in first array:
let first = [1,2,3];let second = [4,5,6];first.push(second);console.log(first); // [1, 2, 3, [4, 5, 6]]first.push(...second);console.log(first); // [1, 2, 3, 4, 5, 6]
Pushing in an array of parameters:
let var1 = [1,2,3];let var2 = [4,5,6];function sumUp(a,b,c){ console.log( a+b+c );}sumUp(...var1); // 6sumUp(...var2); // 15
[ES6] 13. Using the ES6 spread operator ...
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