How to make a hover effect in javascript?
I’m getting started in this programming thing. I want to simulate css hover effect in javascript but I don’t know how to do it. It is to apply it on an html element. Could you help me?
How to make a hover effect in javascript?
I’m getting started in this programming thing. I want to simulate css hover effect in javascript but I don’t know how to do it. It is to apply it on an html element. Could you help me?
6
Answers
to do that you can use "mouseover" and "mouseout" events.
So, if you have an element like this:
you can create some events listener to that element in the next way:
and inside the function/callback that is returned by the addEventListener is where you need to write your logic.
And the mouseover is an event listening when your mouse is over the element, and the mouseout is an event listening when your mouse was moved out of the element
To simulate a CSS hover effect in JavaScript, you can use the
mouseenter
andmouseleave
events to detect when the mouse enters and leaves an element, respectively. For example:HTML:
CSS:
Javascript:
We are simulating a CSS hover effect on the my-element’s
div
. When the mouse enters the element, we change its background color to red, and when the mouse leaves, we change it back to blue. We also add a CSS transition to make the color change smoothly.Try using this unique code.
use the
onmouseover
andonmouseout
codes in the html. can be used injs
,jsx
source = https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_onmouseover
There is no advantage to using JavaScript (over the css :hover pseudoselector for this). But if you do:
I really recommend using delegated event listening (as opposed to the examples in other answers). That is: You listen to event for the whole body and the filter out which elements that are targeted.
Advantages: You only need one event listener for multiple elements + the event listener will work for element added by JavaScript even after you have created the event listener.
html
js
No matter how many buttons (or whatever elements you want to listen to) this code would work…
There’s no property in js to modify css selectors. However, you can get the css style element and append the text content with your own styles: