JavaScript string as number | parseint, number function

Type decoration are not needed like in Javascript variables like int, Stings, etc. It auto get type by variable value. String is define single( ‘ ‘ ) or double (” “) quote. JavaScript string as the number is nothing just you can define numbers value only inside the quotes then it will become strings.

Define JavaScript string as a number

Let’s define a number in double quote as a string. And then check if its string or not?

Output:

JavaScript string as number

How to change string as number to Number

As we learned about js string as number now let’s convert it into number(int/integer) type data.

We are doing examples with parseint() and Number() Function.

After converted will check its number or not using Number.isInteger() method.

1. JavaScript parseInt() Function

The parseInt() function parses a string and returns an integer.

Output: true

2. JavaScript Number() Function

Convert different object values to their numbers:

Do comment if you have any doubts and suggestion on this tutorial.

Note: The All JS Examples codes are tested on the Safari browser (Version 12.0.2) and Chrome.
OS: macOS 10.14 Mojave
Code: HTML 5 Version


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.