Arrow functions arrows function

New additions to the ES6, unlike common methods 1, this object is defined when defining a function, rather than in the use of the time to decide 2, can not use new, also cannot be when the constructor 3, this value once determined cannot be modified under ES5, the custom sort comparison function:

var result = values.sort(function(a, b) {    return a - b;});

var result = Values.sort ((a, b) = = a);    The function transfer function is very concise.

http://www.nczonline.net/blog/2013/09/10/understanding-ecmascript-6-arrow-functions/

Arrow functions arrows function