HTML DOM offsetLeft Property

The HTML DOM offsetLeft property returns a number corresponding to the left position of the specified element relative to the left side of the parent element.

Following is the syntax −

Returning number value in pixels (px)

HTMLelement.offsetLeft

Here, returned value corresponds to −

The left position and margin of the specified element
The left padding, scrollbar, border, and margin of the parent element

Let us see an example of HTML DOM offsetLeft property −

Example

<!DOCTYPE html>
<html>
<head>
<title>HTML DOM offsetLeft</title>
<style type="text/css">
   #picForm {
      width:70%;
      margin: 0 auto;
      text-align: center;
   }
   input[type="button"] {
      border-radius: 10px;
   }
   #containerDiv {
      margin: 0 auto;
   }
</style>
</head>
<body>
   <form id="picForm">
      <fieldset>
         <legend>HTML-DOM-offsetLeft</legend>
         <div id="containerDiv">
            <img id="image" src="https://www.tutorialspoint.com/ios/images/ios-mini-logo.jpg">
         </div>
         <input type="button" onclick="getLeft()" value="Get offsetLeft">
         <div id="divDisplay"></div>
      </fieldset>
   </form>
<script>
   var divDisplay = document.getElementById("divDisplay");
   var picForm = document.getElementById("picForm");
   var containerDiv = document.getElementById("containerDiv");
   function getLeft() {
      // window.getComputedStyle() gets the computed css
      var style = window.getComputedStyle(picForm);
      var style2 = window.getComputedStyle(document.body);
      divDisplay.innerHTML = 'Left Offset of form: '+picForm.offsetLeft+'px';
      divDisplay.innerHTML += '<br>Left position of Child(form): '+style.left;
      divDisplay.innerHTML += '<br>Left margin of Child(form): '+style.marginLeft;
      divDisplay.innerHTML += '<br>Left padding of Parent(body): '+style2.paddingLeft;
      divDisplay.innerHTML += '<br>Left border of Parent(body): '+style2.borderLeftWidth;
      divDisplay.innerHTML += '<br>Left margin of Parent(body): '+style2.marginLeft;
}
</script>
</body>
</html>

Output

Before clicking any button −

HTML DOM offsetLeft Property

After clicking ‘Get offsetLeft’ button −

HTML DOM offsetLeft Property