Tutorials using JS
Change border of a div in JavaScript
In this tutorial, you shall learn how to change the border of a div element using JavaScript.
Solution
To set or change the border of a div element using JavaScript, we can use Element.style.border property. Get the div element and set its style.border property with the required border value.
divElement.style.border = '2px solid red';Program
When user clicks on the Click me button, we get the div element with the id myDiv and set its border to 5px solid red using style.border property.
<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Tutorial</h1>
<button id="myBtn">Click me</button>
<div id="myDiv">About</div>
<style>
#myDiv {
width: 100px;
height: 100px;
background: yellow;
}
</style>
<script>
document.getElementById("myBtn").addEventListener("click", function() {
//get the div element
const myDiv = document.getElementById("myDiv");
//set the border of the div
myDiv.style.border = '5px solid red';
});
</script>
</body>
</html>