Show slider from hidden state in EJ2 TypeScript Range Slider control

23 Jan 20259 minutes to read

This section demonstrates how to render the Range Slider control in a hidden state and make it visible upon a button click. You can initialize the Range Slider in a hidden state by setting the display property to none.

In the sample, clicking the button will make the Range Slider visible from its hidden state, and you must also call the refresh method of the Range Slider to render it properly based on its original dimensions.

import { Slider, SliderTooltipEventArgs, SliderTickEventArgs } from '@syncfusion/ej2-inputs';
import { Button } from '@syncfusion/ej2-buttons';

// Initialize the Button component
let button: Button = new Button({ content: 'Button' });
// Render initialized button
button.appendTo('#element');

// Initialize Range Slider Control
let defaultObj: Slider = new Slider({
    // Set slider minimum and maximum values
    // new Date(Year, Month, day, hours, minutes, seconds, milliseconds)
    min: new Date(2013, 6, 13, 11).getTime(), max: new Date(2013, 6, 13, 17).getTime(),
    // 3600000 milliseconds = 1 Hour
    step: 3600000,
    //Set buttons for slider
    showButtons: true,
    // Set the initial range values for slider
    value: new Date(2013, 6, 13, 13).getTime(),
    // Bind Tooltip change event for custom formatting
    tooltipChange: tooltipChangeHandler,
    // Initialize tooltip with placement
    tooltip: {
        placement: 'Before', isVisible: true, cssClass: 'e-tooltip-cutomization'
    },
    // Bind ticks event for custom formatting
    renderingTicks: renderingTicksHandler,
    // Initialize ticks with placement, largeStep, smallStep
    ticks: {
        placement: 'After',
        // 2 * 3600000 milliseconds = 2 Hour
        largeStep: 2 * 3600000,
        smallStep: 3600000, showSmallTicks: true
    },
    // Set the type to render range slider
    type: 'MinRange'
});
defaultObj.appendTo('#slider');

function tooltipChangeHandler(args: SliderTooltipEventArgs): void {
    /**
     * toLocaleTimeString is predefined javascript date function, which is used to
     * customize the date in different format
     */
    let custom: { [key: string]: string } = { hour: '2-digit', minute: '2-digit' };
    // Splitting the range values from the tooltip using space into an array.
    if (args.text.indexOf('-') !== -1) {
        let totalMilliSeconds: string[] = args.text.split(' ');
        // First part is the first handle value
        let firstPart: string = totalMilliSeconds[0];
        // Second part is the second handle value
        let secondPart: string = totalMilliSeconds[2];

        firstPart = new Date(Number(firstPart)).toLocaleTimeString('en-us', custom);
        secondPart = new Date(Number(secondPart)).toLocaleTimeString('en-us', custom);
    } else {
        args.text = new Date(Number(args.text)).toLocaleTimeString('en-us', custom);
    }
}

function renderingTicksHandler(args: SliderTickEventArgs): void {
    let totalMilliSeconds: number = Number(args.value);
    /**
     * toLocaleTimeString is predefined javascript date function, which is used to
     * customize the date in different format
     */
    let custom: { [key: string]: string } = { hour: '2-digit', minute: '2-digit' };
    // Assigning our custom text to the tick value.
    args.text = new Date(totalMilliSeconds).toLocaleTimeString('en-us', custom);
}

// Visible slider by clicking the button
let elementButton = document.querySelector('#element');
if (elementButton) {
    elementButton.addEventListener('click', () => {
        let slider = document.getElementById("case");
        let ticks: any = document.getElementById("slider");
        if (slider) {
            slider.style.display = "block";
        }
        if (ticks && ticks.ej2_instances && ticks.ej2_instances[0]) {
            ticks.ej2_instances[0].refresh();
        }
    });
}
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2 Range Slider</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 Range Slider Control" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/31.2.12/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/31.2.12/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/31.2.12/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/31.2.12/ej2-buttons/styles/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <!--button to show slider-->
    <button id="element" style="float:left;">Button</button>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div class='wrap'>
            <div id="case">
                <div id="slider">
                </div>
            </div>
        </div>
    </div>
    <style>
        /* render slider in hidden state */
        #case {
            display: none;
        }

        .wrap {
            box-sizing: border-box;
            height: 260px;
            margin: 0 auto;
            padding: 80px 10px;
            width: 460px;
        }
    </style>
</body>

</html>
#container {
  visibility: hidden;
}

#loader {
  color: #008cff;
  font-family: 'Helvetica Neue','calibiri';
  font-size: 14px;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}