js改变对象的属性名

var arr = [
    {
        "courseName": "英语",
        "code": "english"
    },
    {
        "courseName": "药物化学",
        "code": "ywhx"
    }
];
var a = JSON.stringify(arr).replace(/courseName/g, "title").replace(/code/g, "name");
var b = JSON.parse(b);
console.log(b)