Less (Leaner Style Sheets) is an extension to normal CSS which is basically used to enhance the abilities of normal CSS code and provide it superpowers.
The percentage() function is a type of Math function in Less.js (which is basically used to perform mathematical operations). The percentage() function is used to convert any numeric floating point value to a percentage value. For example, using the percentage function on a value of 0.5 will return 50% as the output.
Parameters:
- number: Any numeric floating point value. For example: 0.3, 13, 2.5 etc.
Syntax:
percentage(number)
Example 1: In this example, we want that the width of the container becomes equal to 25% but we have a variable, @width, which is storing the value 0.25. We use the percentage() function on this and apply the width to the container.
HTML
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content= "width=device-width, initial-scale=1.0"> <title>Less.js Math percentage() Function</title> <link rel="stylesheet" href="styles.css"> </head> <body> <div class="container"> <h1 style="color: green;">neveropen</h1> <h3>Less.js Math percentage() Function</h3> </div> </body> </html> |
styles.less: The LESS code is as follows.
CSS
@width: 0.25; .container { border: 2px solid black; width: percentage(@width); } |
Syntax: To compile the above LESS code into normal CSS, run the following command.
lessc styles.less styles.css
styles.css: The output CSS file looks like the following
CSS
.container { border: 2px solid black; width: 25%; } |
Output:
Output of Less.js Math percentage() function example 1
Example 2: In this example, we have calculated the sine of 20 degrees using the sin() function of Less.js. We have converted the value to a percentage value and applied it to the height and width of the container class.
HTML
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content= "width=device-width, initial-scale=1.0"> <title>Less.js Math percentage() Function</title> <link rel="stylesheet" href="/styles.css"> </head> <body> <div class="container"> <h1 style="color: green;"> neveropen </h1> <h3>Less.js Math percentage() Function</h3> </div> </body> </html> |
styles.less: The LESS code is as follows.
CSS
@value: sin(20deg); body { height: 100vh; } .container { border: 2px solid black; height: percentage(@value); width: percentage(@value); } |
Syntax: To compile the above LESS code into normal CSS, run the following command.
lessc styles.less styles.css
styles.css: The output CSS file looks like the following.
CSS
body { height: 100vh; } .container { border: 2px solid black; height: 34.20201433%; width: 34.20201433%; } |
Output:
Output of Less.js Math percentage() function example 2
Reference: https://lesscss.org/functions/#math-functions-percentage
