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Less isnumber()

The Less isnumber() function takes a value as a parameter and returns TRUE if it is a number otherwise, returns FALSE.

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isnumber() Function Example

Let’s take an example to demonstrate the usage of isnumber() function in Less file.

Create a Less file named “simple.less”, having the following code:

Less file: simple.less

Now open the node.js command prompt and execute the following code: lessc simple.less simple.css

This will compile the “simple.less” file. A CSS file named “simple.css” will be generated.

For example:

The generated CSS “simple.css”, has the following code:

Output: