CSS ﺪﯿﻫﺩ ﺮﯿﯿﻐﺗ ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﺎﺑ ﺍﺭ ﺎﻫﺮﯿﻐﺘﻣ

فهرست مطالب

ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﺎﺑ ﺎﻫﺮﯿﻐﺘﻣ ﺮﯿﯿﻐﺗ

.ﺪﯿﻫﺩ ﺮﯿﯿﻐﺗ ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﺎﺑ ﺍﺭ ﺎﻬﻧﺁ ﺪﯿﻧﺍﻮﺗ ﯽﻣ ﻪﮐ ﯽﻨﻌﻣ ﻦﯾﺍ ﻪﺑ ،ﺪﻧﺭﺍﺩ ﯽﺳﺮﺘﺳﺩ DOM

.ﺖﺳﺍ ﻩﺪﺷ ﻩﺩﺭﻭﺁ ﻞﺒﻗ ﺕﺎﺤﻔﺻ ﺭﺩ ﻩﺪﺷ ﻩﺩﺎﻔﺘﺳﺍ ﻝﺎﺜﻣ ﺯﺍ blue-- ﺮﯿﻐﺘﻣ ﺮﯿﯿﻐﺗ ﻭ ﺶﯾﺎﻤﻧ ﯼﺍﺮ

ﻝﺎﺜﻣ

 <script>
// Get the root element
var r = document.querySelector(':root');
  
// Create a function for getting a variable value
function 
  myFunction_get() {
  // Get the styles (properties and values) for the 
  root
  var rs = getComputedStyle(r);
  // Alert the value of 
  the --blue variable
  alert("The value of --blue is: " + 
  rs.getPropertyValue('--blue'));
}
// Create a function for setting a 
  variable value
function myFunction_set() {
  // Set the value of 
  variable --blue to another value (in this case "lightblue")
  
  r.style.setProperty('--blue', 'lightblue');
}
</script>

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﺍﺭ ﻥﺁ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<head>
<style>
:root {
  --blue: #1e90ff;
  --white: #ffffff; 
}

body {
  background-color: var(--blue);
}

h2 {
  border-bottom: 2px solid var(--blue);
}

.container {
  color: var(--blue);
  background-color: var(--white);
  padding: 15px;
}

.container button  {
  background-color: var(--white);
  color: var(--blue);
  border: 1px solid var(--blue);
  padding: 5px;
}
</style>

<script>
// Get the root element
var r = document.querySelector(':root');

// Create a function for getting a variable value
function myFunction_get() {
  // Get the styles (properties and values) for the root
  var rs = getComputedStyle(r);
  // Alert the value of the --blue variable
  alert("The value of --blue is: " + rs.getPropertyValue('--blue'));
}

// Create a function for setting a variable value
function myFunction_set() {
  // Set the value of variable --blue to another value (in this case "lightblue")
  r.style.setProperty('--blue', 'lightblue');
}
</script>
</head>
<body>

<h1>Get and Change CSS Variable With JavaScript</h1>

<div class="container">
  <h2>Lorem Ipsum</h2>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam semper diam at erat pulvinar, at pulvinar felis blandit.</p>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam semper diam at erat pulvinar, at pulvinar felis blandit.</p>
  <p>
    <button>Yes</button>
    <button>No</button>
  </p>
</div>
<br>

<button type="button" onclick="myFunction_get()">Get CSS Variable with JavaScript</button>
<button type="button" onclick="myFunction_set()">Change CSS Variable with JavaScript</button>

</body>
</html>

ﺮﮔﺭﻭﺮﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ

ﺪﻨﮐ ﯽﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ ﻥﺁ ﺯﺍ ﻞﻣﺎﮐ ﺭﻮﻃ ﻪﺑ ﻪﮐ ﺪﻨﻨﮐ ﯽﻣ ﺺﺨﺸﻣ ﺍﺭ ﺮﮔﺭﻭﺮﻣ ﻪﺨﺴﻧ ﻦﯿﻟﻭﺍ ﻝﻭﺪﺟ ﺭﺩ

Function
var()	49.0	15.0	31.0	9.1	36.0

.()CSS var ﻊﺑﺎﺗ

var(): ﺪﻨﮐ ﯽﻣ ﺝﺭﺩ ﺍﺭ CSS ﺮﯿﻐﺘﻣ ﮏﯾ ﺭﺍﺪﻘﻣ