JavaScript isFinite() Function
The JavaScript isFinite() function is used to check whether a number is a finite, legal number or not. It returns true for all the values except +infinity, -infinity, or NaN.
Syntax:
isFinite(value)
Parameters: This method takes a single parameter as mentioned above and discussed below:
- value: It is a required value passed in the isFinite() function.
Return Value: It returns a Boolean value i.e. returns false if the value is +infinity, -infinity, or NaN, otherwise returns true.
Javascript
<!DOCTYPE html><html><body> <p>JavaScript isFinite() Function</p> <script> document.write(isFinite(12) + "<br>"); document.write(isFinite(0) + "<br>"); document.write(isFinite(12.3) + "<br>"); document.write(isFinite("Geeks") + "<br>"); document.write(isFinite("456") + "<br>"); document.write(isFinite(-46) + "<br>"); </script></body></html> |
Output:
Supported Browsers:
- Chrome 1 and above
- Firefox 1 and above
- Edge 12 and above
- Opera 3 and above
- Safari 1 and above
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