使用javascript / underscore.js查找并替换json对象中的属性值

Question

I have one list as follows

var data = [{id:1, name:'user1', img:'img1.jpg' },{id:2, 'user2', img:'img2.jpg' }]

Now I have to replace img property with new value (eg 'New_Image_2.jpg') for id=2 using underscore.js or in javascript using less effort. right now I have created one small function as follows.

var imgpath = 'New_Image_2.jpg';
var tmpdata = _.findWhere(data,{id:2});
if (tmpdata) {
    tmpdata.img = imgpath;
}

Now, in above method, my problem is, How to marge new value with original data?

Answer 1

那么您的代码应该已经可以工作了，因为_.findWhere返回与您的约束相对应的第一个对象，如果它不存在则返回undefined对象，这意味着修改tmpdata.img实际上会修改您想要修改的值。