请问 colors3 为什么会输出一串逗号呢？想不通

Question

var colorText = "red,blue,green,yellow";
var colors1 = colorText.split(",");
var colors2 = colorText.split(",",2);
var colors3 = colorText.split(/[ ^\,]+/);//["", ",", ",", ",", ""]

Answer 1

https://segmentfault.com/q/1010000005268466?sort=created