Question

I’m writing a method which should concatenate two strings(that are result of json stringify) into one string(which should look like json object with it’s structure).

First one :

{"text":"klk","makeId":"9"}

Second one:

{"firstname":"jjk","lastname":"jkjk","email":"[e-mail]"}

How do I concatenate these two into one json string i.e :

{"text":"klk","makeId":"9", "firstname":"jjk","lastname":"jkjk","email":"[e-mail]"}

I could strip {" and "} then split by comma and achieve this result. I’m wondering is there better more smart way to do this?

Answer 1

These strings are JSON! Parse them, merge them like objects and stringify them again.

---

var data1 = JSON.parse(json1);
var data2 = JSON.parse(json2);
var data = merge(data1, data2); // implement merge!
console.log(JSON.stringify(data));

JSON should be available in all recent browsers.

function merge(obj1, obj2) {
    var hasOwn = {}.hasOwnProperty;
    for (var key in obj2) {
        if (hasOwn.call(obj2, key)) {
            obj1[key] = obj2[key];
        }
    }
    return obj1;
}