What is the difference between == and === in javascript?

Jaimin Shethiya

7.1k

== means only compare the value. if you have to used only == equal and they don’t checked the any datatype. if the datatype mismatch then also it will return true.
=== means compare value with the datatype also if both are same then it will return true otherwise it will return false.

== compares the value
=== compares value and type

Ravi Patel

I have very good explaied artificial on =, ==, === in Java script. https://www.c-sharpcorner.com/article/difference-between-and-in-javascript2/

Jignesh Kumar

This is very common interview question in javascript most of the interviewer asked this kind of question the very basic example is

1 == ‘1’ The result of this answer is true because when we compare two values using double equal then it comapares only value but 1 === ‘1’ this gives us false because this time not only checkes the value but its data type also.

Siddharth Gajbhiye

== and === is use for comparaing object
== is check abstract equality like chanking only values for both side
if(2 == ‘2’) - true.
=== is compare data type and value ex.
if(2 === ‘2’) - return false as one variable is int and another is ‘string’

chaitanya phadnis

== compares the value === compares value and type

Roshni Gandhi

In JavaScript it means Same value and type. For Example, 5 == "5" // It will return true because it evaluate the same value 5 === "5" // It will return false because it evaluate both same value as well as same type.Hope this will resolve your query.

Atul Warade

== Just compares the value. Whereas, === compares the value as well as its datatype. If the data type and value both matches then only it will be true, else will return false.

Muskan Jain

This is a very standard question for javascript. The answer is as below:

== will compare the values of the two operands
=== will compare the values and types of the two operands

Munib Butt

= is used for assigning values to a variable in JavaScript.
== is used for comparison between two variables irrespective of the datatype of variable.
=== is used for comparision between two variables but this will check strict type, which means it will check datatype and compare two values.

My Article to understand with example.
https://www.c-sharpcorner.com/article/difference-between-and-in-javascript2/

Jignesh Kumar