How to use JSON.stringify() In Javascript
In this approach, we use JSON.stringify() to convert both objects into JSON strings and then compare the strings using === for strict equality. If the objects have the same properties with the same values (regardless of the order), the strings will be equal, and the function will return true.
Example: In this example, The areObjectsEqual function compares two objects obj1 and obj2 by converting them to JSON strings. The output is true because both objects have equivalent properties and values.
function areObjectsEqual(obj1, obj2) {
const stringifiedObj1 = JSON.stringify(obj1);
const stringifiedObj2 = JSON.stringify(obj2);
return stringifiedObj1 === stringifiedObj2;
}
let obj1 = {
name: "John",
age: 23,
degree: "CS"
};
let obj2 = {
name: "John",
age: 23,
degree: "CS"
};
console.log(areObjectsEqual(obj1, obj2));
Output
true
How to compare two objects to determine the first object contains equivalent property values to the second object in JavaScript ?
In this article, we are going to learn about comparing two objects to determine if the first object contains equivalent property values to the second object, In JavaScript, comparing the values of two objects involves checking if they have the same properties with corresponding values. Given two objects obj1 and obj2 and the task are to check that obj1 contains all the property values of obj2 in JavaScript.
Input: obj1: { name: "John", age: 23; degree: "CS" }
obj2: {age: 23, degree: "CS"}
Output: true
Input: obj1: { name: "John", degree: "CS" }
obj2: {name: "Max", age: 23, degree: "CS"}
Output: false
To solve this problem we follow the following approaches.
Table of Content
- Using for..in loop
- Using Object.keys() and Array.every()
- Using JSON.stringify()
- Using a custom function
- Using Object.entries()
- Using Map Object
We will explore all the above methods along with their basic implementation with the help of examples.