Setting max height to the dialog in EJ2 JavaScript Dialog control

8 May 20236 minutes to read

By default, the maxHeight for the Dialog is calculated based on the target. If the target is not specified externally, the Dialog consider the body as target and will calculate the maxHeight based on it. We have an option to set the maxHeight of the Dialog in the beforeOpen event.


// Initialize Dialog component.
var dialog = new ej.popups.Dialog({
    width: '800px',
    showCloseIcon: true,
    position: { X: 'center', Y: 'center' },
    header: 'Dialog',
    created: onCreated,
    beforeOpen: onOpen,
    // The Dialog shows within the target element
    target: document.getElementById("container"),
// Render initialized Dialog.
// Sample level code to handle the button click action.
document.getElementById('targetButton').onclick = function () {
    // Call the show method to open the Dialog.;
function onCreated() {
    document.getElementById('dlgContent').style.display = 'block';
function onOpen(args){
    // setting maxHeight to the Dialog.
    args.maxHeight = '300px';
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 Dialog with scrollable content</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="TypeScript UI Components">
    <meta name="author" content="Syncfusion">
    <link href="" rel="stylesheet">
    <link href="" rel="stylesheet">
    <link href="" rel="stylesheet">
    <link href="styles.css" rel="stylesheet">
<script src="" type="text/javascript"></script>
<script src="" type ="text/javascript"></script>

    <div id="container">
        <button class="e-control e-btn" id="targetButton" role="button" e-ripple="true" style="position: absolute;">Open Dialog</button>
        <div id="dialog">
            <div id="dlgContent" style="display: none">
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                    Model–view–controller (MVC) is a software architecture pattern which separates the representation of information from the user's interaction with it. The model consists of application data, business rules, logic, and functions. A view can be any output representation of data, such as a chart or a diagram. Multiple views of the same data are possible, such as a bar chart for management and a tabular view for accountants. The controller mediates input, converting it to commands for the model or view.The central ideas behind MVC are code reusability and in addition to dividing the application into three kinds of components, the MVC design defines the interactions between them.
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                    A view requests from the model the information that it needs to generate an output representation to the user.

var ele = document.getElementById('container');
if(ele) { = "visible";
<script src="index.js" type="text/javascript"></script>