ES6

ES6 允许在大括号里面，直接写入变量和函数，作为对象的属性和方法。 这些的书写更加简洁。

let name  = "Alan";

let play = function(){

　　console.log("We want to play with you")

}


const friend = {
　　name,  // ES5： name:name,
　　play, // ES5: play:function(){}
　　improve(){// ES5:improve: function(){}
　　　　console.log(" we want to play with you and your friends")
　　}

}