## Equal-value and Equal-type Comparison Operator

In JavaScript, Equal-value and equal-type comparison operator takes two operands, returns true if left and right operands are equal in both value and data type, or false otherwise.

## Syntax

`===` symbol is used for comparison equal-value and equal-type operator.

``````a === 5  //returns true if a has a value of 5 and type of a is numeric
a === b  //returns true if a and b has same value and type``````

Since equal-value and equal-type operator does check both type and value, the following example illustrates the case.

``````a = 5     //a has a value of 5 (numeric)
a === '5' //returns false
a === 5   //returns true``````

## Examples

1. Check if value of `a` is equal to `5`.

``````var a = 5;
if (a === 5) {
console.log('a is 5');
} else {
console.log('a is not 5');
}``````

2. Check if values in `a` and `b` are equal to each other.

``````var a = 5;
var b = 7;
if (a === b) {
console.log('a and b are equal');
} else {
console.log('a and b are not equal');
}``````

3. Check if value in `a` is equal to `5`.

``````var a = '5';
if (a === 5) {
console.log('a is \'5\'');
} else {
console.log('a is not \'5\'');
}``````

`a` is assigned with a string type value. Since comparison equal-value and equal-type operator checks both the type and value, it returns false.