compare objects in javascript

1var person1={first_name:"bob"};
2var person2 = {first_name:"bob"}; 
3
4//compare the two object
5if(JSON.stringify(person1) === JSON.stringify(person2)){
6    //objects are the same
7}
8

1function isEquivalent(a, b) {
2    // Create arrays of property names
3    var aProps = Object.getOwnPropertyNames(a);
4    var bProps = Object.getOwnPropertyNames(b);
5
6    // If number of properties is different,
7    // objects are not equivalent
8    if (aProps.length != bProps.length) {
9        return false;
10    }
11
12    for (var i = 0; i < aProps.length; i++) {
13        var propName = aProps[i];
14
15        // If values of same property are not equal,
16        // objects are not equivalent
17        if (a[propName] !== b[propName]) {
18            return false;
19        }
20    }
21
22    // If we made it this far, objects
23    // are considered equivalent
24    return true;
25}

1function shallowEqual(object1, object2) {
2  const keys1 = Object.keys(object1);
3  const keys2 = Object.keys(object2);
4
5  if (keys1.length !== keys2.length) {
6    return false;
7  }
8
9  for (let key of keys1) {
10    if (object1[key] !== object2[key]) {
11      return false;
12    }
13  }
14
15  return true;
16}

1//No generic function to do that at all.
2//use Lodash, famous for such must have functions, all efficiently built
3//http://lodash.com/docs#isEqual --- 
4
5npm install lodash
6
7_.isEqual(object, other);