Question 361423 in Javascript Question posted in
A very good W3school tutorial can be found here.

Javascript – How do remove a class after revealing it?

I have a gif that I am trying to remove after 3 seconds of it being toggled on. Here is the breakdown.
• When the user clicks on the orange square it gets removed.
• A gif is toggled on.
• After 3 seconds
I want the gif to get removed and the brown circle toggle on.
I know I have to use the setTimeout method, but I do not know how to apply it. Can anyone help?
`

//Removes square
function remove(){
    this.remove();
    
}

//Adds gif
let gif = document.querySelector (".gif");

function showHide(){
    gif.classList.toggle("hide"); 
    
}

//Removes gif
*{
    padding:0;
    margin:0;
}
body{
    background-color:pink;
}
.parent{
    width:100vw;
    height:100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}


.gif{
    border-radius: 20px;
    z-index: 1; 
}
.hide{
 display:none;
}
#square{
    width:200px;
    height:200px;
    position: absolute;
    background-color:orange; 
    border-radius: 20px;
    z-index: 2; 
    top:50%;
    left:50%;
    transform: translate(-50%,-50%);
    cursor: pointer;
}

.circle{
    width: 200px;
    height:200px;
    background-color:brown;
    border-radius: 50%;   
}

.hide_2{
    display:none;
   }
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title> gif reveal </title>
    <link rel="stylesheet" href="styles.css">

</head>
<body>
    <div class="parent"> 
      <img class="gif hide" src="kuromi.gif">
        <div id="square" onclick="this.remove();showHide();">
            <div class="circle hide_2"></div>
        </div>    
       
    
    </div>
    <script src="index.js"></script>
    
</body>
</html>
Tags:

2

Answers


  1. 0

    I would do something like:

    function showHide(){
    gif.classList.toggle("hide");    
}

function handleOnClick = () => {
    remove();
    showHide();
    setTimeout(() => showHide(), 3000); // This will get executed after 3 seconds (in milliseconds)
}

    I, however, would prefer not to use toggle method as sometimes it might work a little bit quirky.

    const showHide = (hide) => {
  if (hide) gif.classList.add("hide");
  else gif.classList.remove("hide");
};

function handleOnClick = () => {
    remove();
    showHide(true);
    setTimeout(() => showHide(false), 3000);
}

    It should work the same way, but this way it is clearer on what action you want to do.

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  2. 0

    The issue is occurring because you are trying to show the circle which is a child of square after deleting the square. So making the square a sister element of the circle would get your job done.

    //Adds gif
let gif = document.querySelector(".gif");
let circle = document.querySelector(".circle")
let square = document.querySelector("#square");

function showHide(elem) {
  if (elem == 'square') {
    square.classList.toggle("hide");
  } else {
    circle.classList.toggle("hide");
  }
  gif.classList.toggle("hide");
  setTimeout(() => {
    gif.classList.toggle("hide");
    if (elem == 'square') {
      circle.classList.toggle("hide");
    } else {
      square.classList.toggle("hide");
    }
  }, 3000)

}

//Removes gif
    * {
  padding: 0;
  margin: 0;
}

body {
  background-color: pink;
}

.parent {
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.gif {
  border-radius: 20px;
  z-index: 1;
}

.hide {
  display: none;
}

#container {
  z-index: 2;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  position: absolute;
}

#square {
  width: 200px;
  height: 200px;
  background-color: orange;
  border-radius: 20px;
}

.circle {
  width: 200px;
  height: 200px;
  background-color: brown;
  border-radius: 50%;
}

.hide_2 {
  display: none;
}
    <!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title> gif reveal </title>
  <link rel="stylesheet" href="styles.css">

</head>

<body>
  <div class="parent">
    <img class="gif hide" src="kuromi.gif">
    <div id="container">
      <div id="square" onclick="showHide('square');"></div>
      <div class="circle hide" onclick="showHide('circle');"></div>
    </div>

  </div>
  <script src="index.js"></script>

</body>

</html>
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