javascript - 根据数组中的值 排序对象

Question

var a = [100,200,300]

var b = [{id:'100',name:'小红'},{id:'300',name:'小明'},{id:'200',name:'小蓝'}]

Answer 1

雷雷

Answer 2

雷雷

Answer 3

雷雷

Answer 4

雷雷

Answer 5

只循环一次：

b.forEach(function(ele, index, arr) {
    if (a.indexOf(parseInt(ele.id)) > -1)
        this[a.indexOf(parseInt(ele.id))] = ele;
}, out = [])
console.log(JSON.stringify(out));