Template in EJ2 TypeScript Timeline control

14 Mar 20249 minutes to read
The Timeline control allows you to customize the appearance for each item by using the template to modify the dot items, templated contents, progress bar styling and more.
The template context receives the following information:
Type	Purpose
`item`	Indicates the current data of the Timeline item.
`itemIndex`	Indicates the current index of the Timeline item.
index.ts
index.html
styles.css
import { Timeline, TimelineItemModel } from '@syncfusion/ej2-layouts';

const projectMilestones: TimelineItemModel[] = [
  { content: 'Kickoff meeting'},
  { content: 'Content approved'},
  { content: 'Design approved'},
  { content: 'Product delivered'}
];

// Initializes the Timeline control
let timeline: Timeline = new Timeline({
  items: projectMilestones,
  orientation: 'horizontal',
  template: '#timeline-template',
  cssClass: 'custom-timeline'
});

// Render initialized Timeline.
timeline.appendTo("#timeline");
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2 - Timeline</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-layouts/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <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>
    <div id='loader'>LOADING....</div>
    <div id='container' style="height: 150px; width: 600px;">
        <div id="timeline"></div>
    </div>
    <script id="timeline-template" type="text/x-jsrender">
        <div class='template-container item-${itemIndex}'>
            <div class="content-container">
                <div class="timeline-content"> ${item.content} </div>
            </div>
            <div class="content-connector"></div>
            <div class="progress-line">
                <span class="indicator"></span>
            </div>
        </div>
    </script>
    <style>
        .custom-timeline .e-timeline-item.e-item-template {
            align-items: flex-end;
        }
        .custom-timeline .e-timeline-items {
            justify-content: center;
        }
        .template-container .content-connector {
            position: absolute;
            left: 88%;
            width: 3px;
            height: 28px;
        }
        .template-container .content-container {
            padding: 8px;
            border-width: 1px;
            border-style: solid;
        }
        .content-container .timeline-content {
            font-size: 14px;
        }

        /* Color customizations - Progress line, connector line, dot border */
        .item-0 .progress-line, .item-0 .content-connector { background-color: rgb(233, 93, 93); }
        .item-1 .progress-line, .item-1 .content-connector { background-color: rgba(247, 179, 22, 0.907); }
        .item-2 .progress-line, .item-2 .content-connector { background-color: rgb(60, 184, 60); }
        .item-3 .progress-line, .item-3 .content-connector { background-color: rgb(153, 29, 230); }

        .item-0 .progress-line .indicator, .item-0 .content-container { border-color: rgb(233, 93, 93); }
        .item-1 .progress-line .indicator, .item-1 .content-container { border-color: rgba(247, 179, 22, 0.907); }
        .item-2 .progress-line .indicator, .item-2 .content-container { border-color: rgb(60, 184, 60); }
        .item-3 .progress-line .indicator, .item-3 .content-container { border-color: rgb(153, 29, 230); }

        .item-0 .content-container { box-shadow: 2px 2px 8px rgb(233, 93, 93); }
        .item-1 .content-container { box-shadow: 2px 2px 8px rgba(247, 179, 22, 0.907); }
        .item-2 .content-container { box-shadow: 2px 2px 8px rgb(60, 184, 60); }
        .item-3 .content-container { box-shadow: 2px 2px 8px rgb(153, 29, 230); }

        /* START --- Customizing Dot and progress line */
        .custom-timeline .template-container .indicator {
            position: absolute;
            width: 25px;
            height: 25px;
            border-radius: 50%;
            background-color: #fff;
            border-width: 6px;
            border-style: solid;
            left: 88%;
            transform: translate(-50%, -40%);
            cursor: pointer;
        }

        .progress-line {
            position: absolute; 
            height: 10px;
            width: 100%;
            left: 0;
            top: 50%;
        }
        /* END --- Customizing Icon and progress line */
    </style>
</body>
</html>
#container {
    visibility: hidden;
    margin: 50px auto;
    padding: 30px;
}

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