HTML DOM TouchEvent ctrlKey Property

HTMLWeb DevelopmentFront End Technology

The HTML DOM TouchEvent ctrlKey property returns a Boolean value corresponding to the state if ctrl was pressed when a touch event was fired.

Following is the syntax −

Returning boolean value - true/false

touchEvent.ctrlKey

Here, “booleanValue” can be the following −

booleanValue
Details
true
It defines that ctrl key waspressed when touch event occurred
false
It defines that ctrl key wasnot pressed when touch event occurred

Note: We ran Touch event examples on Online HTML Editors accessed on Mobile or systems with touch access. This is done so that we can perform touch operations like touch the screen for 2 seconds.

Let us see an example of TouchEvent ctrlKey property −

Example

 Live Demo

<!DOCTYPE html>
<html>
<head>
<title>HTML DOM TouchEvent ctrlKey</title>
<style>
   form {
      width:70%;
      margin: 0 auto;
      text-align: center;
   }
   * {
      padding: 2px;
      margin:5px;
   }
   input[type="button"] {
      border-radius: 10px;
   }
   legend{
      border-color: #dc3545;
   }
   span {
      display: inline-block;
      width: 40px;
      height: 20px;
      margin: 1px;
      color: #fff;
      border: 3px solid black;
   }
   div span:nth-child(1){
      background-color: #FF8A00;
   }
   div span:nth-child(2){
      background-color: #F44336;
   }
   div span:nth-child(3){
      background-color: #03A9F4;
   }
   div span:nth-child(4){
      background-color: #4CAF50;
   }
</style>
</head>
<body>
   <form id="formSelect" ontouchstart="eventAction(event)">
      <fieldset>
         <legend>HTML-DOM-TouchEvent-ctrlKey</legend>
         <label for="textSelect">Background Color Changer</label>
         <div><span>alt</span><span>Ctrl</span><span>Meta</span><span>Shift</span></div>
         <div id="divDisplay">No HotKey Pressed</div>
      </fieldset>
   </form>
<script>
   var divDisplay = document.getElementById("divDisplay");
   var formSelect = document.getElementById("formSelect");
   function eventAction(event) {
      if(event.ctrlKey){
         formSelect.style.backgroundColor = '#F44336';
         formSelect.style.color = '#FFF'
         divDisplay.textContent = 'ctrl Key Pressed';
      }
   }
</script>
</body>
</html>

Output

Before triggering touch event

After triggering touch event with alt key pressed −

raja
Published on 29-Oct-2019 10:06:20
Advertisements