Header in EJ2 TypeScript Tab control
2 May 202319 minutes to read
This section explains about modifying the style of Tab header, and configuring its icons and positions.
Styles
You can customize header styles by adding predefined classes in the Tab root element. The pre-defined CSS class names are as follows:
- e-fill: The Selected Tab header background is set as solid fill.
- e-background: Tab header has a solid fill background, and the selected header has a highlighted border.
- e-background e-accent: Tab header has a solid fill background, and the selected header has a highlighted border with accent color.
If the above custom style classes are not included in the root element, the default style is applied to the Tab items.
import { Tab } from '@syncfusion/ej2-navigations';
import { DropDownList, ChangeEventArgs } from '@syncfusion/ej2-dropdowns';
import { enableRipple } from '@syncfusion/ej2-base';
enableRipple(true);
let tabObj: Tab = new Tab({
items: [
{
header: { 'text': 'Twitter' },
content: 'Twitter is an online social networking service that enables users to send and read short 140-character ' +
'messages called "tweets". Registered users can read and post tweets, but those who are unregistered can only read ' +
'them. Users access Twitter through the website interface, SMS or mobile device app Twitter Inc. is based in San ' +
'Francisco and has more than 25 offices around the world. Twitter was created in March 2006 by Jack Dorsey, ' +
'Evan Williams, Biz Stone, and Noah Glass and launched in July 2006. The service rapidly gained worldwide popularity, ' +
'with more than 100 million users posting 340 million tweets a day in 2012.The service also handled 1.6 billion ' +
'search queries per day.'
},
{
header: { 'text': 'Facebook' },
content: 'Facebook is an online social networking service headquartered in Menlo Park, California. Its website was ' +
'launched on February 4, 2004, by Mark Zuckerberg with his Harvard College roommates and fellow students Eduardo ' +
'Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes.The founders had initially limited the website\'\s ' +
'membership to Harvard students, but later expanded it to colleges in the Boston area, the Ivy League, and Stanford ' +
'University. It gradually added support for students at various other universities and later to high-school students.'
},
{
header: { 'text': 'WhatsApp' },
content: 'WhatsApp Messenger is a proprietary cross-platform instant messaging client for smartphones that operates ' +
'under a subscription business model. It uses the Internet to send text messages, images, video, user location and ' +
'audio media messages to other users using standard cellular mobile numbers. As of February 2016, WhatsApp had a user ' +
'base of up to one billion,[10] making it the most globally popular messaging application. WhatsApp Inc., based in ' +
'Mountain View, California, was acquired by Facebook Inc. on February 19, 2014, for approximately US$19.3 billion.'
}
]
});
tabObj.appendTo('#element');
let headerStyles: DropDownList = new DropDownList({
width: '90%',
change:()=>{ changeHeaderStyle();}
});
headerStyles.appendTo('#headerStyles');
function changeHeaderStyle(e: ChangeEventArgs): void {
removeStyleClass();
if (headerStyles.value === 'fill') {
tabObj.element.classList.add('e-fill');
} else if (headerStyles.value === 'background') {
tabObj.element.classList.add('e-background');
} else if (headerStyles.value === 'accent') {
tabObj.element.classList.add('e-background');
tabObj.element.classList.add('e-accent');
}
}
function removeStyleClass(): void {
tabObj.element.classList.remove('e-fill');
tabObj.element.classList.remove('e-background');
tabObj.element.classList.remove('e-accent');
}<!DOCTYPE html>
<html lang="en">
<head>
<title>Essential JS 2 Tab</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="Typescript Toolbar Controls" />
<meta name="author" content="Syncfusion" />
<link href="index.css" rel="stylesheet" />
<link href="https://cdn.syncfusion.com/ej2/27.2.2/material.css" rel="stylesheet" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<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'>
<div id="default">
<div class='row'>
<div class="col-xs-6 col-sm-6 col-lg-6 col-md-6">
<label> Header Style </label>
</div>
<div class="col-xs-6 col-sm-6 col-lg-6 col-md-6">
<select id="headerStyles">
<option value="default">Default</option>
<option value="fill">Fill</option>
<option value="background">Background</option>
<option value="accent">Accent</option>
</select>
</div>
</div>
</div>
<br/>
<div id='element'></div>
<div id='result'></div>
</div>
</body>
</html>Icon positions
You can customize the position of the Tab header icons using the iconPosition property. This property depends on the header items iconCss property. By default, Tab header icon is placed on left position. The position values are as follows:
- Left: Icon is placed on the left of the Tab header item.
- Right: Icon is placed on the right of the Tab header item.
- Top: Icon is placed on the top of the Tab header item.
- Bottom: Icon is placed on the bottom of the Tab header item.
import { Tab } from '@syncfusion/ej2-navigations';
import { DropDownList, ChangeEventArgs } from '@syncfusion/ej2-dropdowns';
import { enableRipple } from '@syncfusion/ej2-base';
enableRipple(true);
let tabObj: Tab = new Tab({
items: [
{
header: { 'text': 'Twitter', 'iconCss': 'e-twitter' },
content: 'Twitter is an online social networking service that enables users to send and read short 140-character ' +
'messages called "tweets". Registered users can read and post tweets, but those who are unregistered can only read ' +
'them. Users access Twitter through the website interface, SMS or mobile device app Twitter Inc. is based in San ' +
'Francisco and has more than 25 offices around the world. Twitter was created in March 2006 by Jack Dorsey, ' +
'Evan Williams, Biz Stone, and Noah Glass and launched in July 2006. The service rapidly gained worldwide popularity, ' +
'with more than 100 million users posting 340 million tweets a day in 2012.The service also handled 1.6 billion ' +
'search queries per day.'
},
{
header: { 'text': 'Facebook', 'iconCss': 'e-facebook' },
content: 'Facebook is an online social networking service headquartered in Menlo Park, California. Its website was ' +
'launched on February 4, 2004, by Mark Zuckerberg with his Harvard College roommates and fellow students Eduardo ' +
'Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes.The founders had initially limited the website\'\s ' +
'membership to Harvard students, but later expanded it to colleges in the Boston area, the Ivy League, and Stanford ' +
'University. It gradually added support for students at various other universities and later to high-school students.'
},
{
header: { 'text': 'WhatsApp', 'iconCss': 'e-whatsapp' },
content: 'WhatsApp Messenger is a proprietary cross-platform instant messaging client for smartphones that operates ' +
'under a subscription business model. It uses the Internet to send text messages, images, video, user location and ' +
'audio media messages to other users using standard cellular mobile numbers. As of February 2016, WhatsApp had a user ' +
'base of up to one billion,[10] making it the most globally popular messaging application. WhatsApp Inc., based in ' +
'Mountain View, California, was acquired by Facebook Inc. on February 19, 2014, for approximately US$19.3 billion.'
}
]
});
//Render initialized Tab component
tabObj.appendTo('#element');
let iconPosition: DropDownList = new DropDownList({
width: '90%',
change:()=>{ changeHeaderStyle();}
});
iconPosition.appendTo('#iconPosition');
function changeHeaderStyle(e: ChangeEventArgs): void {
let items: any = tabObj.items;
for(let i: number = 0; i < items.length; i++) {
tabObj.items[i].header.iconPosition = iconPosition.value;
}
}<!DOCTYPE html>
<html lang="en">
<head>
<title>Essential JS 2 Tab</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="Typescript Toolbar Controls" />
<meta name="author" content="Syncfusion" />
<link href="index.css" rel="stylesheet" />
<link href="https://cdn.syncfusion.com/ej2/27.2.2/material.css" rel="stylesheet" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<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'>
<div id="default">
<div class='row'>
<div class="col-xs-6 col-sm-6 col-lg-6 col-md-6">
<label>Icon Position</label>
</div>
<div class="col-xs-6 col-sm-6 col-lg-6 col-md-6">
<select id="iconPosition">
<option value="left">Left</option>
<option value="right">Right</option>
<option value="top">Top</option>
<option value="bottom">Bottom</option>
</select>
</div>
</div>
</div>
<br/>
<div id='element'></div>
<div id='result'></div>
</div>
</body>
</html>