CSS content Property
Demo
This is a normal paragraph, but the quote is added by css content property.
CSS content Property
CSS content
property is used with the ::before
and ::after
pseudo-elements, to insert generated content.
Example
<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
p::before{
content: open-quote;
font-weight: bold;
font-size: 28px;
}
p::after{
content: close-quote;
font-weight: bold;
font-size: 28px;
}
</style>
</head>
<body>
<h1>CSS content Property</h1>
<p>This is a paragraph.</p>
</body>
</html>
Syntax
Using CSS
element{
content: normal;
}
Using Javascript
JavaScript doesn't allow you to add pseudo-class to a element. but we can do it in an alternate way. Check our last example.
Animatable
No, content property is not animatable. CSS Animatable Properties Reference.
Default Value
Default value for CSS content property is normal.
Property Value
The following table provides a list of values for CSS content
property.
Value | Explanation |
---|
none | Specifies that the pseudo-element is not generated. |
normal | Computes to none for the ::before and ::after pseudo-elements. |
string | Sets the content to the text you specify. |
url | Sets the content to a URL that designates an external resource (such as an image). |
counter | The value of a CSS counter, generally a number. |
attr(x) | The value of the element's attribute x as a string. |
open-quote | close-quote | These values are replaced by the appropriate string from the quotes property. |
no-open-quote | no-close-quote | Introduces no content, but increments (decrements) the level of nesting for quotes. |
Using no-open-quote and no-close-quote
In this example, we will demonstrate how to escape the quotes by using no-open-quote
and no-close-quote
.
Example
<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
p::before{
content: open-quote;
font-weight: bold;
font-size: 28px;
}
p::after{
content: close-quote;
font-weight: bold;
font-size: 28px;
}
#point::before{
content: no-open-quote;
}
#point::before{
content: no-close-quote;
}
</style>
</head>
<body>
<h1>CSS content Property</h1>
<p>This is first paragraph.</p>
<p id="point">This is second paragraph.</p>
</body>
</html>
Using None
In this example, The pseudo-element will not be generated.
Example
<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
p::before{
content: open-quote;
font-weight: bold;
font-size: 28px;
}
p::after{
content: close-quote;
font-weight: bold;
font-size: 28px;
}
#point::before{
content: none;
}
#point::before{
content: none;
}
</style>
</head>
<body>
<h1>CSS content Property</h1>
<p>This is first paragraph.</p>
<p id="point">This is second paragraph.</p>
</body>
</html>
Using Normal
Normal computes to none.
Example
<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
p::before{
content: open-quote;
font-weight: bold;
font-size: 28px;
}
p::after{
content: close-quote;
font-weight: bold;
font-size: 28px;
}
#point::before{
content: normal;
}
#point::before{
content: normal;
}
</style>
</head>
<body>
<h1>CSS content Property</h1>
<p>This is first paragraph.</p>
<p id="point">This is second paragraph.</p>
</body>
</html>
Using String
In the following example, we will demonstrate how to add string (text) to the content.
Example
<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
p::before{
content: "Important - ";
}
</style>
</head>
<body>
<h1>CSS content Property</h1>
<p>This is a paragraph.</p>
</body>
</html>
Using counter()
In the following example, we will demonstrate how to set counter to the content.
Example
<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
p{
counter-increment: index;
}
p::before{
content: counter(index);
}
</style>
</head>
<body>
<h1>CSS content Property</h1>
<p>This is first paragraph.</p>
<p>This is second paragraph.</p>
</body>
</html>
Using attr
In the following example, we will demonstrate how to add attr to the content.
Example
<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
a::before {
content: attr(href);
}
</style>
</head>
<body>
<h1>CSS content Property</h1>
<a href="https://wikimass.com/js">(Learn JavaScript)</a>
</body>
</html>
Using JavaScript
In the following example, we will demonstrate how to set the CSS content
property of an element using JavaScript.
Example
<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
.point::before {
content: attr(href);
}
</style>
</head>
<body>
<h1>CSS content Property</h1>
<a href="https://wikimass.com/js">(Learn JavaScript)</a>
<button onclick="myFunction()">Click Me</button>
<script>
var x = document.getElementsByTagName("a")[0];
function myFunction(){
x.className += "point";
}
</script>
</body>
</html>
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