怎么找到对应的对象值？

Question

我要用12345

去对象里找出o12345的值11

{
    o12345: "11", o23213: "22", o78233: "22"
}

怎么做比较好？

Answer 1

var obj = {o12345: "11", o23213: "22", o78233: "22"}
for(let key in obj){
if(key.indexOf('1234')>-1){
 var b = obj[key]
}
}
b就是你要要的，是这样吗？

Answer 2

直接访问不行吗?

var obj = {o12345: "11", o23213: "22", o78233: "22"};

console.log(obj.o12345)    // 11
console.log(obj['o12345']) // 11

Answer 3

let key = 12345;
let obj = {o12345: "11", o23213: "22", o78233: "22"};
console.log(obj[`o${key}`]); // -> '11'

纯粹观察数据结构得到的方法，有点取巧