javascript - 求解js语法糖 ...的含义

Question

 * [['hello'],['world','1','2']]
 * => [Array(1), Array(3)]
 * [['hello'],...[].slice.call(['world','1','2'], 0)]
 * => [Array(1), "world", "1", "2"]
 * [...['hello'],...[].slice.call(['world','1','2'], 0)]
 * => ["hello", "world", "1", "2"]
 

可以看出，加语法糖 ... 之后的作用。但我水平有限，在网上找不到关于 ... 的资料，有没有大神解释一下。有资源更好。谢谢。

Answer 1

https://developer.mozilla.org...

Answer 2

es6的扩展运算符
http://www.108js.com/article/...

Answer 3

延展运算符