Less isem

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Less isem()

The Less color definition isem function takes a value as a parameter and returns TRUE if the value is an em value otherwise, returns FALSE.


isem() Function Example

Let's take an example to demonstrate the usage of isem color definition function in Less file.

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

Less file: simple.less

  1. div {  

  2.     font:        isem(#ff0);            

  3.     background:  isem(blue);      

  4.     border:      isem("string");    

  5.     font:        isem(1234);      

  6.     background:  isem(56px);      

  7.     border:      isem(7.8em);            

  8.     border:      isem(keyword);                 

  9. }  

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

Less isem1

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

For example:

Less isem2

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

Output:

Less isem3

  1. div {  

  2.   font: false;  

  3.   background: false;  

  4.   border: true;  

  5.   border: false;  

  6. }