Javascript Booleans

In JavaScript, a boolean is a data type that represents either true or false. Boolean values are commonly used in conditional statements and logical operations.

Booleans can be objects

We can create the JavaScript Boolean object by Boolean() constructor as given below:-

Boolean b=new Boolean(value);

Note:- The Boolean value of an expression is the basis for all JavaScript comparisons and conditions.

Input:-

<script>

    var a = false;

    var b = new Boolean(true);

    document.writeln("Type of a is ", typeof(a));

    document.wr

Test Yourself

Output:-

Comparison and Conditions

We can evaluate any value using comparison operators. Below are some examples:

Operator	Description	Example
>	greater than	if (salary > 4000)
<	less than	if (age < 30)
==	equal to	if (day == "Sunday")

Boolean Examples

Here are some examples which illustrate the usage of Boolean.

Input:-

<script>

    var a, b = null, c = 20 / "B";

    document.write("a ",Boolean(a));

    document.write("<br/>b ",Boolean(b));

    document.write("<br/>c ",Boolean(c));

    document.write("<br/>10<20 ",10<20);

    document.write("<br/>10<5 ",10<5);

</script>

Test Yourself

Output:-

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Javascript Booleans

Booleans can be objects

Comparison and Conditions

Boolean Examples

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Javascript Booleans

Booleans can be objects

Comparison and Conditions

Boolean Examples

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