Less.js is a simple CSS pre-processor that facilitates the creation of manageable, customizable, and reusable style sheets for websites. Since CSS is a dynamic style sheet language, it is preferred. LESS is adaptable, so it works with a wide range of browsers. Only CSS that has been created and processed using the CSS pre-processor, a computer language, can be used by web browsers. In addition to providing capabilities like variables, functions, mixins, and operations to help create dynamic CSS while maintaining backward compatibility, it is a CSS language extension.
In this article, we are going to discuss the Math tan() function, which is used to do the tangent function on a given value. This function takes a floating number or deg value or rad value as a parameter and performs an tan operation on that value and returns a number.
Syntax:
tan(value)
Parameters:
- value: This is the only compulsory parameter for this function. This parameter takes a floating number.
Compile LESS code into CSS code.
Example 1: The code below demonstrates the usage and implementation of the Misc tan() function.
<!DOCTYPE html> <html>
<head>
<link rel="stylesheet" type="text/css" href="style.css"/>
</head>
<body>
<h1 style="color:green">GeeksforGeeks</h1>
<h3><b>Less.js Math tan() Function</b></h3>
<div class="c1">
<p class="p1">
<strong>
tan(55deg)
<br> 1.42814801
</strong>
</p>
</div>
</body>
</html>
|
styles.less:
@body-bg-color: #eeeeee;
@dark: hsl(25, 71%, 8%);
@light: rgb(253, 255, 146);
@val: tan(55deg);
body{ background-color: @body-bg-color;
} .c1 {
width: 300px * @val;
height: 150px * @val;
margin: 1rem * @val;
background-color: @dark;
} .p1 {
padding: 80px 0px 0px 120px;
color: @light;
} |
Now, to compile the above LESS code to CSS code, run the following command:
lessc style.less style.css
The compiled CSS file comes to be:
style.css:
body { background-color: #eeeeee;
} .c1 {
width: 428.44440202px;
height: 214.22220101px;
margin: 1.42814801rem;
background-color: hsl(25, 71%, 8%);
} .p1 {
padding: 80px 0px 0px 120px;
color: #fdff92;
} |
Output:
Example 2: The code below demonstrates the usage and implementation of the Misc tan() function along with isnumber type function if and boolean logical functions.
<!DOCTYPE html> <html>
<head>
<link rel="stylesheet" type="text/css" href="style.css"/>
</head>
<body>
<h1 style="color:green">GeeksforGeeks</h1>
<h3><b>Less.js Math tan() Function</b></h3>
<div class="c1">
<p class="p1">
<strong>
boolean(isnumber(@val))
<br> TRUE
</strong>
</p>
</div>
</body>
</html>
|
styles.less:
@body-bg-color: #eeeeee;
@dark: hsl(25, 71%, 8%);
@light: rgb(253, 255, 146);
@val: tan(20rad);
@cond: boolean(isnumber(@val)); body{ background-color: @body-bg-color;
} .c1 {
width: 300px * @val;
height: 150px * @val;
margin: 1rem * @val;
background-color: if(@cond, @light, @dark);
} .p1{
padding: 80px 0px 0px 120px;
color: if(@cond, @dark, @light);
} |
Now, to compile the above LESS code to CSS code, run the following command:
lessc style.less style.css
The compiled CSS file comes to be:
style.css:
body { background-color: #eeeeee;
} .c1 {
width: 671.14828327px;
height: 335.57414163px;
margin: 2.23716094rem;
background-color: #fdff92;
} .p1 {
padding: 80px 0px 0px 120px;
color: hsl(25, 71%, 8%);
} |
Output:
Reference: https://lesscss.org/functions/#math-functions-tan