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Set state persistence of the Tab component in Angular Tabs component

22 Jul 2021 / 3 minutes to read

State persistence allows the Tab to retain the current modal value in the browser cookies for state maintenance. This action is handled through the enablePersistence property which is set to false by default. When it is set to true, some of the Tab component model values will be retained even after refreshing the page.

The following sample demonstrates how to set state persistence of the Tab component.

Source
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app.component.ts
app.module.ts
main.ts
index.html
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import { Component } from '@angular/core';
import { TabComponent } from '@syncfusion/ej2-angular-navigations';

@Component({
    selector: 'app-container',
    template: `<ejs-tab id="element" enablePersistence=true>
            <e-tabitems>
                    <e-tabitem [header]='headerText[0]'>
                        <ng-template #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.
                    </ng-template>
                </e-tabitem>
                <e-tabitem [header]='headerText[1]'>
                    <ng-template #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.
                    </ng-template>
                </e-tabitem>
                <e-tabitem [header]='headerText[2]'>
                    <ng-template #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 US6. 9.3 billion.
                    </ng-template>
                </e-tabitem>
            </e-tabitems>
        </ejs-tab>`
})
export class AppComponent {
public headerText: Object = [{ 'text': 'Twitter' }, { 'text': 'Facebook' },{ 'text': 'WhatsApp' }];
}
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import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { AppComponent } from './app.component';
import { TabComponent, TabItemsDirective, TabItemDirective } from '@syncfusion/ej2-angular-navigations';
/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule,FormsModule
    ],
    declarations: [AppComponent, TabComponent, TabItemsDirective, TabItemDirective],
    bootstrap: [AppComponent]
})
export class AppModule { }
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import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);
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<!DOCTYPE html>
<html lang="en">

<head>
    <title>Angular Tab</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Angular Tab Control" />
    <meta name="author" content="Syncfusion" />
    <link href="//cdn.syncfusion.com/ej2/material.css" rel="stylesheet" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://unpkg.com/core-js/client/shim.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/core-js/2.4.1/core.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.6.25/zone.min.js"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.3"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id="wrapper" style='margin-top: 20px;'>
        <app-container>
            <div id='loader'>LOADING....</div>
        </app-container>
    </div>
</body>
</html>