Objects are not like arrays or strings. So simply comparing by using "===" or "==" is not possible. Here to compare we have to first stringify the object and then using equality operators it is possible to compare the objects.
In the following example, objects were stringified() at first and then compared with each other.
Example
<html>
<body>
<script>
const obj1 = {Name: "Rahim", City: 'Hyderabad',Country: "India" };
const obj2 = {Name: "Rahim", City: 'Hyderabad',Country: "India" };
document.write(JSON.stringify(obj1) === JSON.stringify(obj2));
</script>
</body>
</html>Output
true
If we look at the following example, even though the same properties were repeated, their order is different. In this case, object comparison would result in false as shown in the output.
Example
<html>
<body>
<script>
const obj1 = {Name: "Rahim", City: 'Hyderabad', Country: "India" };
const obj2 = {Name: "Rahim", Country: "India", City: 'Hyderabad', };
document.write(JSON.stringify(obj1) === JSON.stringify(obj2));
</script>
</body>
</html>Output
false
So to overcome this drawback, a javascript library named 'lodash' is introduced. It checks whether the key/value pairs are equal or not but not their order.
Example
In the following example "_isEqual()" property of lodash is used to compare javascript objects.
<html>
<head>
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/0.10.0/lodash.min.js"></script>
</head>
<body>
<script>
const obj1 = {Name: "Rahim", City: 'Hyderabad', Country: "India" };
const obj2 = {Name: "Rahim", Country: "India", City: 'Hyderabad', };
document.write(JSON.stringify(obj1) === JSON.stringify(obj2));
document.write("</br>");
document.write(_.isEqual(obj1, obj2));
</script>
</body>
</html>Output
false true