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?


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

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