Angular TabPanel - Customize Item Appearance

An item in the TabPanel UI component includes a tab and a view. For a minor customization of TabPanel items, you can define specific fields in item data objects. For example, the following code generates three items: the first has a badge, the second is disabled, the third has an icon.

jQuery
JavaScript
HTML
$(function() {
    $('#tabPanelContainer').dxTabPanel({
        items: [{
            title: 'Info',
            text: 'This is Info Tab',
            badge: 'New'
        }, {
            title: 'Contacts',
            text: 'This is Contacts Tab',
            disabled: true
        }, {
            title: 'Address',
            text: 'This is Address Tab',
            icon: 'home'
        }]
    });
});
<div id="tabPanelContainer"></div>
Angular
HTML
TypeScript
<dx-tab-panel
    [items]="tabPanelItems">
</dx-tab-panel>
import { DxTabPanelModule } from 'devextreme-angular';
// ...
export class AppComponent {
    tabPanelItems = [{
        title: 'Info',
        text: 'This is Info Tab',
        badge: 'New'
    }, {
        title: 'Contacts',
        text: 'This is Contacts Tab',
        disabled: true
    }, {
        title: 'Address',
        text: 'This is Address Tab',
        icon: 'home'
    }];
}
@NgModule({
    imports: [
        // ...
        DxTabPanelModule
    ],
    // ...
})
Vue
App.vue
<template>
    <DxTabPanel
        :items="tabPanelItems" />
</template>
<script>
import 'devextreme/dist/css/dx.light.css';

import DxTabPanel from 'devextreme-vue/tab-panel';

export default {
    components: {
        DxTabPanel
    },
    data() {
        return {
            tabPanelItems: [{
                title: 'Info',
                text: 'This is Info Tab',
                badge: 'New'
            }, {
                title: 'Contacts',
                text: 'This is Contacts Tab',
                disabled: true
            }, {
                title: 'Address',
                text: 'This is Address Tab',
                icon: 'home'
            }]
        };
    }
};
</script>
React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.light.css';

import TabPanel from 'devextreme-react/tab-panel';

const tabPanelItems = [{
    title: 'Info',
    text: 'This is Info Tab',
    badge: 'New'
}, {
    title: 'Contacts',
    text: 'This is Contacts Tab',
    disabled: true
}, {
    title: 'Address',
    text: 'This is Address Tab',
    icon: 'home'
}];

class App extends React.Component {
    render() {
        return (
            <TabPanel
                items={tabPanelItems}
            />
        );
    }
}

export default App;

If you need a more flexible solution, define itemTemplate and itemTitleTemplate for views and tabs, respectively. In Angular and Vue, you can declare them in the markup. In React, you can use rendering functions (shown in the code below) or components.

Angular
HTML
TypeScript
<dx-tab-panel
    [items]="tabPanelItems"
    itemTitleTemplate="title"
    itemTemplate="item">
    <div *dxTemplate="let content of 'title'">
        <p>{{content.title}}</p>
    </div>
    <div *dxTemplate="let content of 'item'">
        <div style="margin: 25px;">
            <h1>{{content.title}}</h1>
            <div style="text-align: left;">
                <p *ngFor="let key of getItemKeys(content.data)">
                    {{key}}: <b>{{content.data[key]}}</b>
                </p>
            </div>
        </div>
    </div>
</dx-tab-panel>
import { DxTabPanelModule } from 'devextreme-angular';
// ...
export class AppComponent {
    tabPanelItems = [{
        title: 'Info',
        data: { firstName: 'John', lastName: 'Smith', birthYear: 1986 }
    }, {
        title: 'Contacts',
        data: { phone: '(555)555-5555', email: 'John.Smith@example.com' }
    }];
    getItemKeys (item) {
        return Object.keys(item);
    }
}
@NgModule({
    imports: [
        // ...
        DxTabPanelModule
    ],
    // ...
})
Vue
App.vue
<template>
    <DxTabPanel
        :items="tabPanelItems"
        item-title-template="title"
        item-template="item">
        <template #title="{ data }">
            <div>
                <p>{{ data.title }}</p>
            </div>
        </template>
        <template #item="{ data }">
            <div :style="{ margin: '25px' }">
                <h1>{{data.title}}</h1>
                <div :style="{ textAlign: 'left' }">
                    <p v-for="key in getItemKeys(data.data)">
                        {{key}}: <b>{{data.data[key]}}</b>
                    </p>
                </div>
            </div>
        </template>
    </DxTabPanel>
</template>
<script>
import 'devextreme/dist/css/dx.light.css';

import DxTabPanel from 'devextreme-vue/tab-panel';

export default {
    components: {
        DxTabPanel
    },
    data() {
        return {
            tabPanelItems: [{
                title: 'Info',
                data: { firstName: 'John', lastName: 'Smith', birthYear: 1986 }
            }, {
                title: 'Contacts',
                data: { phone: '(555)555-5555', email: 'John.Smith@example.com' }
            }]
        };
    },
    methods: {
        getItemKeys: function(item) {
            return Object.keys(item);
        }
    }
};
</script>
React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.light.css';

import { TabPanel } from 'devextreme-react/tab-panel';

const tabPanelItems = [{
    title: 'Info',
    data: { firstName: 'John', lastName: 'Smith', birthYear: 1986 }
}, {
    title: 'Contacts',
    data: { phone: '(555)555-5555', email: 'John.Smith@example.com' }
}];

class App extends React.Component {
    render() {
        return (
            <TabPanel
                items={tabPanelItems}
                itemTitleRender={this.renderTitle}
                itemRender={this.renderItem}
            />
        );
    }

    renderTitle(data) {
        return (
            <div>
                <p>{data.title};</p>
            </div>
        );
    }

    renderItem(content) {
        return (
            <div style={{ margin: 25 }}>
                <h1>{content.title}</h1>
                <div style={{ textAlign: 'left' }}>
                    { 
                        Object.keys(content.data).map(key => {
                            return (
                                <p key={key}>
                                    {key}: <b>{content.data[key]}</b>
                                </p> 
                            )}
                        )
                    }
                </div>
            </div>
        );
    }
}

export default App;

View Demo

If you use jQuery, use DOM manipulation methods to combine the HTML markup for TabPanel items. To apply this markup, use the itemTemplate and itemTitleTemplate callback functions as shown in the following code:

jQuery
JavaScript
HTML
var dataItems = [{
    title: "Info",
    data: { firstName: "John", lastName: "Smith", birthYear: 1986 }
}, {
    title: "Contacts",
    data: { phone: "(555)555-5555", email: "John.Smith@example.com" }
}];

$(function() {
    $("#tabPanelContainer").dxTabPanel({
        items: dataItems,
        itemTitleTemplate: function(itemData, itemIndex, itemElement) {
            itemElement.append("<p>" + itemData.title + "</p>");
        },
        itemTemplate: function(itemData, itemIndex, itemElement) {
            var container = $("<div style='margin:25px;'>");
            container.append("<h1>" + itemData.title + "</h1>");

            var info = $("<div style='text-align:left;'>");
            for (var field in itemData.data) {
                info.append("<p>" + field + ": <b>" + itemData.data[field] + "</b></p>");
            }
            container.append(info);
            itemElement.append(container);
        }
    });
});
<div id="tabPanelContainer"></div>

You can also customize individual items. In Angular, Vue, and React, declare them using the dxItem component. When using jQuery, you can declare the items as scripts and reference them in the template property or assign a customization function straight to this property.

Angular
HTML
TypeScript
<dx-tab-panel>
    <dxi-item title="Info">
        <p>This is Info Tab</p>
    </dxi-item>
    <dxi-item title="Contacts">
        <p>This is Contacts Tab</p>
    </dxi-item>
</dx-tab-panel>
import { DxTabPanelModule } from 'devextreme-angular';
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxTabPanelModule
    ],
    // ...
})
Vue
App.vue
<template>
    <DxTabPanel>
        <DxItem title="Info">
            <template #default>
                <p>This is Info Tab</p>
            </template>
        </DxItem>
        <DxItem title="Contacts">
            <template #default>
                <p>This is Contacts Tab</p>
            </template>
        </DxItem>
    </DxTabPanel>
</template>
<script>
import 'devextreme/dist/css/dx.light.css';

import DxTabPanel, { DxItem } from 'devextreme-vue/tab-panel';

export default {
    components: {
        DxTabPanel,
        DxItem
    }
};
</script>
React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.light.css';

import { TabPanel, Item } from 'devextreme-react/tab-panel';

class App extends React.Component {
    render() {
        return (
            <TabPanel>
                <Item title="Info">
                    <p>This is Info Tab</p>
                </Item>
                <Item title="Contacts">
                    <p>This is Contacts Tab</p>
                </Item>
            </TabPanel>
        );
    }
}

export default App;
jQuery
JavaScript
HTML
$(function() {
    $("#tabPanelContainer").dxTabPanel({
        items: [{
            title: "Info",
            template: function() {
                return $("<p>").text("This is Info Tab");
            }
        }, {
            title: "Contacts",
            template: $("#individualTemplate")
        }]
    });
});
<div id="tabPanelContainer"></div>
<script id="individualTemplate" type="text/html">
    <p>This is Contacts Tab</p>
</script>

In addition, you can use a 3rd-party template engine to customize UI component appearance. For more information, see the 3rd-Party Template Engines article.

See Also