Reveal concealed roster using JavaScript

I am looking for a way to toggle the visibility of items in a list when an input is clicked. The challenge I'm facing is that the page should load with the list hidden, but the code only functions correctly if the list starts out visible.

function toggleList() {
  var itemList = document.getElementById('items');
  if (itemList.style.display == "block") { // if item list is hidden, show it 
    itemList.style.display = "none";
  } else { // if item list is shown, hide it
    itemList.style.display = "block";
  }
}
ul#items li {
  display: block;
}
<nav id="menu">
  <input type="image" src="_imagens/menuesboco.png" onclick="toggleList()" />
  <ul id="items">
    <li>Item 1</li>
    <li>Item 2</li>
    <li>Item 3</li>
  </ul>
</nav>

javascripthtmlcssdisplay

Answer №1

Make sure to update your CSS code with the following snippet as you have been selecting the incorrect element.

ul#guides{
  display: none;
}

Answer №2

Here is a potential solution:

 function toggleGuides() {
    var guides = document.getElementById('guias');
        if (guides.style.display == "block"){ // if guides hidden, display it 
            guides.style.display = "none";
        }
        else{ // if guides displayed, hide it
            guides.style.display = "block";
        }
    }
ul#guias{display :none;}
ul#guias li {
    display: block;
}
<nav id="menu">
    <input type="image" src="_imagens/menuesboco.png" onclick="toggleGuides()"/>
    <ul id="guias">
        <li>Guide 1</li>
        <li>Guide 2</li>
        <li>Guide 3</li>
    </ul>
</nav>

Answer №3

The display property in CSS can be utilized to toggle the visibility of HTML elements within the DOM through JavaScript or jQuery. Simply set the display property to "none" to hide an element: document.getElementById("element").style.display = "none"; Conversely, setting the display property to "block" will reveal the element.

Answer №4

To hide your list, ensure that the display property of its parent ul element is set to none. This way, when the input is clicked, the intended function will be triggered accordingly.

Answer №5

If you want to conceal a specific element, simply change the display property to “none”. Use this code: 

document.getElementById("element").style.display = "none";
To reveal the element again, set the display property to “block”

Answer №6

How to Conceal a List

document.querySelector('#guias').style.display = 'none';

How to Reveal a List

document.querySelector('#guias').style.display = 'block';

Answer №7

It seems like you mistakenly added ul in your css instead of just using #guias.

Answer №8

To resolve the issue, adjust the CSS by including a new style for ul#guias with the display set to none.

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