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JavaScript Boolean
JavaScript Boolean
Boolean in JavaScript is an object that represents the value of an object in two states whether true or false. A JavaScript Boolean object can be created by using Boolean() constructor as illustrated here:
Boolean b=new Boolean(value);
Note : Please note that the default value of JavaScript Boolean object is known to be false.
Here is one of the example of JavaScript Boolean:
<script> document.write(5<20);//true document.write(20<5);//false </script>
Boolean properties in JavaScript
| Property | Description |
|---|---|
| constructor | This returns the reference of Boolean function that created Boolean object. |
| prototype | It generally enables us to add methods and properties in Boolean prototype. |
Boolean Methods in JavaScript
| Method | Description |
|---|---|
| toSource() | It returns the source of Boolean object in the form of a string. |
| toString() | This method converts Boolean in to a string. |
| valueOf() | It converts any other type in to Boolean. |
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