Destructuring Assignment(解构赋值)
对象属性的赋值,通常的做法是
var data = $('body').data(), //data has properties house and mouse
house = data.house,
mouse = data.mouse;
在ES6中,可以这样写
var {house,mouse} = $('body').data();
对于数组也可以有这种便利的写法
var a = [1,2];
var [v1,v2] = a;