标签：style blog io ar color sp strong on div
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); // 6 sumUp(...var2); // 15
[ES6] 13. Using the ES6 spread operator ...
标签：style blog io ar color sp strong on div
原文地址：http://www.cnblogs.com/Answer1215/p/4116079.html
