Is there a way to use HTML, JavaScript, and CSS to manipulate an object's opacity when a button is clicked?

I am looking to add a button on my website landing page that can hide the weather section, but I am unsure how to go about it! https://i.sstatic.net/COA82.jpg

Currently, I am using a "selector" where I can choose either 0 or 1 from the bottom right corner, and it is functioning well. However, I would prefer to have a button instead. Below is the code snippet I am currently using:

</div>
  <div class="wopacity">
   <select onchange="myFunction(this);" size="2">
   <option>0
   <option selected="selected">1
   </select>

   <script>
    function myFunction(x) {
     // Get the text of the selected option
     var opacity = x.options[x.selectedIndex].text;
     var el = document.getElementById("p1");
     if (el.style.opacity !== undefined) {
       el.style.opacity = opacity;
     } else {
       alert("Your browser does not support this feature!");
     }
    }
   </script>
  </div>
javascripthtmlcssbuttonopacity

Answer №1

If you're looking to incorporate a button, consider implementing a data-* attribute within the button's code. Here's an example of how it could be structured:

<html>
<head>
<script>
    function adjustOpacity(button) {
       // obtain data-opacity value
       let opacity = button.dataset.opacity;
       const element = document.getElementById("p1");
       element.style.opacity = opacity;

       /* shorthand for
            if (opacity === "1") {
              button.dataset.opacity === "0";
            else {
              button.dataset.opacity === "1";
            }
       */
       button.dataset.opacity = opacity === "1" ? "0" : "1";
     }
</script>
</head>
<body>
<div id="p1">Testing Opacity</div>
<button data-opacity="0" onclick="adjustOpacity(this)">Adjust Opacity</button>
</body>
</html>

Does this align with your needs, or did I misinterpret your question?

Answer №2

To easily toggle the visibility of a weather div on your webpage, you can create a button and use JavaScript along with CSS to show and hide the element. Simply set the CSS property display: none or display: block based on its current state. The code snippet below demonstrates how to achieve this functionality.

<html>
 <head>
  <script>
  function toggleWeather(button) {
   const elem = document.getElementById("weatherElem");
   el.style.display = el.style.display === "none" ? "block" : "none";
 }
 </script>
  <div id="weatherElem">Weather Element</div>
  <button id="toggleButton" onclick="toggleWeather(this)">Toggle Weather</button>
 </body>
</html>

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