Less image height

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Less image-height()

The Less image height function is used to check the height of the image from the file.

Let's take an example to demonstrate the usage of image height function in the Less file.

Create a HTML file named "simple.html", having the following data.

HTML file: simple.html

  1. <!DOCTYPE html>  
  2. <head>  
  3.    <link rel="stylesheet" href="simple.css" type="text/css" />  
  4. </head>  
  5. <body>  
  6.   <h2>Welcome to JavaTpoint</h2>  
  7.   <h3>A solution of all technology.</h3>  
  8. </body>  
  9. </html>  

Now create a file named "simple.less". It is similar to CSS file. The only one difference is that it is saved with ".less" extension.

Less file: simple.less

  1. body{  

  2.   background-image:url("image.jpg");  

  3.   height:image-height("image.jpg");  

  4. }  

Put the both file ?simple.html? and ?simple.less? inside the root folder of Node.js

Now, execute the following code: lessc simple.less simple.css

less image height function1

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

For example:

less image height function2

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

  1. body {  

  2.   background-image: url("image.jpg");  

  3.   height: 438px;  

  4. }  


less image height function3