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JavaScript

Gabriel Caraos
Gabriel Caraos
4,358 Points
Posted by Gabriel Caraos
Gabriel Caraos
4,358 Points

How to change the background color as you hover over the boxes using pure javascript.

I created 4 boxes with different color. I was planning to change the background to white and add a border of its background color as you hover into the box.

Here is how it looks in codepen. https://codepen.io/anon/pen/mjoBVL

Daniel Benisti
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Daniel Benisti
Front End Web Development Techdegree Graduate 22,224 Points

you have mouse over evend listener .

https://www.w3schools.com/jsref/event_onmouseover.asp

and you can use if else statement good luck!!

2 Answers

Andrew Hinkson
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Andrew Hinkson
Full Stack JavaScript Techdegree Graduate 25,822 Points
Andrew Hinkson
.a{fill-rule:evenodd;}techdegree seal-36
Andrew Hinkson
Full Stack JavaScript Techdegree Graduate 25,822 Points

I think this would work if it's what your going for:

const box = document.querySelectorAll(".box")

box.forEach(function(myBox) {
  const color = window.getComputedStyle(myBox).getPropertyValue('background-color'); //grabs the css background color
  myBox.addEventListener('mouseover', function(e) {

    e.target.style.backgroundColor = 'white';
    e.target.style.border = `1px solid ${color}`;
  });
  myBox.addEventListener('mouseleave', function(e) {
    e.target.style.backgroundColor = color;
    e.target.style.border = '1px solid white'; //could do this so adding the border doesnt jump the box 
  });
});

Adding the border jumps the box around but i think this should do what you want.

Gabriel Caraos
Gabriel Caraos
4,358 Points
Gabriel Caraos
Gabriel Caraos
4,358 Points

Yes, this is what I was going for. Thanks for the help!

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

For the thunder-cloud box:

document.getElementById("thunder-cloud").addEventListener("mouseenter", function(){
    document.getElementById("thunder-cloud").style.backgroundColor = "white";
    document.getElementById("thunder-cloud").style.border = "thick solid #505260"; 

});

document.getElementById("thunder-cloud").addEventListener("mouseleave", function(){
    document.getElementById("thunder-cloud").style.backgroundColor = "#505260";
   document.getElementById("thunder-cloud").style.border = "none";
});