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Type Coercion In JavaScript

This article describes type coercion in JavaScript.

Scenario

Imagine a scenario where you need to compare two values of different data types. There are typically two approaches to handle this.

Use the === operator.
Type coercion.

Type Coercion

Type coercion refers to the conversion of a value from one data type to an equivalent value of another data type. For instance, if you wish to compare an integer and a Boolean value, you can convert the Boolean value to its corresponding integer representation.

The integer value of false is 0.
The integer value of true is 1.

Example

<script>
    var boolean = true;
    var integer = 1;
    var booleanInt = Number(boolean); // Type Coercion

    if (integer == booleanInt)
        alert("Equal");
    else
        alert("Not Equal");
</script>

Try It

If you execute the above code, you will see Equal in the alert.

Posted By -	Karan Gupta

Posted On -	Sunday, January 15, 2017

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