Position popup open in EJ2 JavaScript Drop down button control

31 Aug 20233 minutes to read

Popup open position can be changed according to the requirement. Popup open position can be changed in open event by setting top and left for the popup element.

In the following example, the top position of the popup element is changed in open event.

index.js
index.html
styles.css
ej.base.enableRipple(true);

//Initialize action items.
var items = [
    {
        text: 'Cut'
    },
    {
        text: 'Copy'
    },
    {
        text: 'Paste'
    }];

// initialize DropDownButton component
var drpDownBtn = new ej.splitbuttons.DropDownButton({
    items: items,
    cssClass: 'e-caret-up',
    open: onOpen
});

// Render initialized DropDownButton.
drpDownBtn.appendTo('#element');

function onOpen(args) {
    args.element.parentElement.style.top = drpDownBtn.element.getBoundingClientRect().top - args.element.parentElement.offsetHeight +'px';
}
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 DropDownButton</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="styles.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/25.1.35/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <button id="element">Clipboard</button>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>
#container {
    visibility: hidden;
}

#loader {
  color: #008cff;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}

button {
  margin: 25% 5px 20px 30%;
}

.e-caret-up .e-caret::before {
  content: '\e918';
}