The Style borderTopWidth property in HTML DOM is used to set or return the width of the top border of an element.
Syntax:
- To get the borderTopWidth Property
object.style.borderTopWidth
- To set the borderTopWidth Property
object.style.borderTopWidth = "thin | medium | thick | length |
initial | inherit"
Return Values: It returns a string value, which representing the width of an element’s top border.
Property Values:
1. thin: This is used to define a thin top border.
Example:
html
<!DOCTYPE html>
<html lang="en">
<head>
<title>
DOM Style BorderTopWidth
</title>
<style>
.elem {
border-style: solid;
padding: 10px;
}
</style>
</head>
<body>
<h1 style="color: green">
GeeksforGeeks
</h1>
<b>
DOM Style BorderTopWidth
</b>
<p class="elem">
GeeksforGeeks is a computer science
portal with a huge variety of well
written and explained computer
science and programming articles,
quizzes and interview questions.
</p>
<button onclick="changeWidth()">
Change borderTopWidth
</button>
<script>
function changeWidth() {
elem = document.querySelector('.elem');
elem.style.borderTopWidth = 'thin';
}
</script>
</body>
</html>
|
Output:
Before clicking the button:
After clicking the button:
2. medium: This is used to define a medium top border. This is the default value.
Example:
html
<!DOCTYPE html>
<html lang="en">
<head>
<title>
DOM Style BorderTopWidth
</title>
<style>
.elem {
border: thick solid;
padding: 10px;
}
</style>
</head>
<body>
<h1 style="color: green">
GeeksforGeeks
</h1>
<b>
DOM Style BorderTopWidth
</b>
<p class="elem">
GeeksforGeeks is a computer
science portal with a huge
variety of well written and
explained computer science
and programming articles,
quizzes and interview questions.
</p>
<button onclick="changeWidth()">
Change borderTopWidth
</button>
<script>
function changeWidth() {
elem = document.querySelector('.elem');
elem.style.borderTopWidth = 'medium';
}
</script>
</body>
</html>
|
Output:
Before clicking the button:
After clicking the button:
3. thick: This is used to define a thick top border.
Example-3:
html
<!DOCTYPE html>
<html lang="en">
<head>
<title>
DOM Style BorderTopWidth
</title>
<style>
.elem {
border-style: solid;
padding: 10px;
}
</style>
</head>
<body>
<h1 style="color: green">
GeeksforGeeks
</h1>
<b>
DOM Style BorderTopWidth
</b>
<p class="elem">
GeeksforGeeks is a computer
science portal with a huge
variety of well written and
explained computer science
and programming articles,
quizzes and interview questions.
</p>
<button onclick="changeWidth()">
Change borderTopWidth
</button>
<script>
function changeWidth() {
elem = document.querySelector('.elem');
elem.style.borderTopWidth = 'thick';
}
</script>
</body>
</html>
|
Output:
Before clicking the button:
After clicking the button:
4. length: This is used to define the top border width in terms of length units.
Example-4:
html
<!DOCTYPE html>
<html lang="en">
<head>
<title>
DOM Style BorderTopWidth
</title>
<style>
.elem {
border-style: solid;
padding: 10px;
}
</style>
</head>
<body>
<h1 style="color: green">
GeeksforGeeks
</h1>
<b>
DOM Style BorderTopWidth
</b>
<p class="elem">
GeeksforGeeks is a computer science
portal with a huge variety of well
written and explained computer science
and programming articles, quizzes and
interview questions.
</p>
<button onclick="changeWidth()">
Change borderTopWidth
</button>
<script>
function changeWidth() {
elem = document.querySelector('.elem');
elem.style.borderTopWidth = '10px';
}
</script>
</body>
</html>
|
Output:
Before clicking the button:
After clicking the button:
5. initial: This is used to set this property to its default value.
Example-5:
html
<!DOCTYPE html>
<html lang="en">
<head>
<title>
DOM Style BorderTopWidth
</title>
<style>
.elem {
border-style: solid;
padding: 10px;
border-top-width: 2px;
}
</style>
</head>
<body>
<h1 style="color: green">
GeeksforGeeks
</h1>
<b>
DOM Style BorderTopWidth
</b>
<p class="elem">
GeeksforGeeks is a computer science
portal with a huge variety of well
written and explained computer
science and programming articles,
quizzes and interview questions.
</p>
<button onclick="changeWidth()">
Change borderTopWidth
</button>
<script>
function changeWidth() {
elem = document.querySelector('.elem');
elem.style.borderTopWidth = 'initial';
}
</script>
</body>
</html>
|
Output:
Before clicking the button:
After clicking the button:
6. inherit: This inherits the property from its parent.
Example-6:
html
<!DOCTYPE html>
<html lang="en">
<head>
<title>
DOM Style BorderTopWidth
</title>
<style>
#parent {
padding: 10px;
border-style: solid;
/* Setting the borderTopWidth
of the parent */
border-top-width: 15px;
}
.elem {
border-style: solid;
padding: 10px;
}
</style>
</head>
<body>
<h1 style="color: green">
GeeksforGeeks
</h1>
<b>
DOM Style BorderTopWidth
</b>
<br>
<br>
<div id="parent">
<p class="elem">
GeeksforGeeks is a computer science
portal with a huge variety of well
written and explained computer science
and programming articles, quizzes and
interview questions.
</p>
</div>
<br>
<button onclick="changeWidth()">
Change borderTopWidth
</button>
<script>
function changeWidth() {
elem = document.querySelector('.elem');
elem.style.borderTopWidth = 'inherit';
}
</script>
</body>
</html>
|
Output:
Before clicking the button:
After clicking the button:
Supported Browsers: The browser supported by borderTopWidth property are listed below:
- Google Chrome 1
- Edge 12
- Internet Explorer 4
- Firefox 1
- Opera 3.5
- Apple Safari 1