js循环匹配组合成新对象或js循环组合新数据

var arry=[

{name: "vehicletravellicensecopyback", id: "a1"},

{name: "vehicletravellicensecopyfront", id: "a2"},

{name: "idcardback", id: "a3"},

{name: "idcardfront", id: "a4"}

]

为了把上面的东西便成下面的

var imgobj={

idcardback: "a1",

idcardfront: "a2",

vehicletravellicensecopyback: "a3",

vehicletravellicensecopyfront: "a4"

}

1. 以前的做法定义一个全量对象

 img: {

vehicletravellicensecopyback: void 0,

vehicletravellicensecopyfront: void 0,

idcardback: void 0,

idcardfront: void 0,

}

for (let v of arry) {

for (let n in this.img) {

if (v.name === n) {

imgobj[n] = v.id

}

}

}

 2、我这是有多惨，今天才发现最快是这样的

for (let v of arry) {

imgobj[v.name] = v.id

}

为什么当时用了两个数组，脑子进水了。。。