In this article, We will show you the difference between == vs === in JavaScript. Both == and === are used for the comparison. Let’s see how both are different.
== vs === in JavaScript
| == (Double Equals) | === (Triple Equals) |
|---|---|
It is used to compare the variables or values | It is also used to compare the variables/values |
Doble equals do not check the data type of variable/value while the comparison | Triple Equals checks the data type of a variable while the comparison |
| Use this when you are unsure about the data type of variable/values | Use this when you sure about the data type of variable/values and want strict comparison. |
'1' == 1 This will return true because double equals don’t check the data type. | '1' === 1 This will return false because triple equals compare the data type too. Simply string is not a number |
0 == false It will return true because double equals convert the 0 to false and then compared | 0 === false It will return false because they are of a different type |
7 == "7" // true | 7 === "7" // false |
7 == 7 // true | 7 === 7 // true |
That’s it for now. We hope this article helped you to learn the difference between == vs === in JavaScript.
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