# isNumber

## Description

Checks whether the value input is a number.

## Input / Parameter

| Name  | Description              | Input Type | Default | Options | Required |
| ----- | ------------------------ | ---------- | ------- | ------- | -------- |
| value | The value to be checked. | Any        | -       | -       | Yes      |

## Output

N/A

## Example

In this example, we will check whether a Number is valid and print the result in the console.

### Step

1. Drag a `button` component into the canvas and open the `Action` tab. Select the `press` event of the button and drag the `Log.write` function to the event flow.
2. Call the function `Validation.isNumber` inside the `Log.write` function.
3. Enter the value for the number to be validated. In this example, we will enter the value "12".

   ![](https://399701567-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwmJ1RKjM2uNFaL6fO3Xu%2Fuploads%2Fgit-blob-248dd326ff493ded330daf8a45514d7574bfa8e5%2FisNumber-step-1.png?alt=media)

### Result

1. The console will print `true` since it is a valid Number.