JavaScript code to perform various functions

Suppose I am implementing the following JS Code:

<script language="javascript" type="text/javascript">
     function toggleVisibility() {
        var element = document.getElementById("elementId");
        if(element.style.visibility.toLowerCase()=="visible" || element.style.visibility == "") {
            element.style.visibility = "hidden";
        } else {
            element.style.visibility = "visible";
        }
    }
</script>

and then using this HTML code:

<a href="#" class="Action" id="action" onclick="return toggleVisibility();">Toggle Menu</a>
    <div id="elementId" style="visibility:hidden">
     content here
     </div>

What is the optimal way to add another div with a link that expands the same div without duplicating the function?

javascript

Answer №1

Here is a simple way to toggle the visibility of a div using JavaScript:

function toggleVisibility(id) {
  var element = document.getElementById(id);
  
  if (element.style.visibility === 'visible' || element.style.visibility === '') {
    element.style.visibility = 'hidden';
  } else {
    element.style.visibility = 'visible';
  }
}

To use this function, just pass the id of the element you want to show/hide:

<button onclick="toggleVisibility('myElement')">Toggle Visibility</button>

Check out this demo to see it in action.

Answer №2

Explore:

function toggleVisibility(targetDiv) {
    var element, style, hidden;
    element = document.getElementById("elementId");
    style = element.style.visibility;
    hidden = style.toLowerCase() == "visible" || style == "" ? false : true;
    element.style.visibility = (targetDiv === true || (hidden && targetDiv !== false) ? 'visible' : 'hidden')
}

How to use:

toggleVisibility() // Toggles visibility to opposite of current state.
toggleVisibility(true) // Always shows the specified div.
toggleVisibility(false) // Always hides the specified div.

Example: http://jsfiddle.net/d2jkq/

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