简单总结es6箭头符号

()=>1*1

x=>x*x

(x,y,z)=>x*y*z

function foo() {
    setTimeout( () => {
        console.log("args:", arguments);
    },100);
}

foo( 2, 4, 6, 8 );

function Prefixer(prefix) {
    this.prefix = prefix;
}
Prefixer.prototype.prefixArray = function (arr) {
    return arr.map((x) => {
        return this.prefix + x;
    });
};