The Less isnumber() function takes a value as a parameter and returns TRUE if it is a number otherwise, returns FALSE.
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.
The generated CSS "simple.css", has the following code: