How to Dynamically add/remove tabs

[Travis]

Hi

From Javascript I need to build tabs dynamically, however, I am having trouble with the syntax.  I looked at the online examples, as you can see below, but I get the error "TypeError: Cannot read property 'children' of undefined" on the addTab line.  What am I missing??

html:

<div class="stackblitz-container material">

        <div class="control-section">

            <div class="content-wrapper">

                <div id="Tab"></div>

            </div>

        </div>

    </div>

Javascript:

var tabObj = new ej.navigations.Tab({

    items: [

        {

            header: { 'text': 'Twitter' },

            content: '<span>Twitter</span></br><div><input id="intext" class="e-input"></div>'

        },

       {

           header: { 'text': 'Facebook' },

           content: 'Facebook '

       }

    ]

});

var item3 = { header: { text: 'Snapchat' }, content: 'Snapchat app' };

tabObj.addTab(item3, 2);

tabObj.appendTo('#Tab');

[Prince Oliver]

Hi Travis, 

Thank you for using Syncfusion products. 

We have checked the shared code snippet, it seems that you are trying to add the items to the tab before the Tab object is assigned to element. In the Tabs dynamic content, we need to add items as an array of objects not only as objects and then use the addTab method. Please refer to the following code snippet. 

var tabObj = new ej.navigations.Tab({ 

    items: [ 

        { 

            header: { 'text': 'Twitter' }, 

            content: '<span>Twitter</span></br><div><input id="intext" class="e-input"></div>' 

        }, 

        { 

            header: { 'text': 'Facebook' }, 

            content: 'Facebook ' 

        } 

    ] 

}); 

//First assign to the element 

tabObj.appendTo('#Tab'); 

 

// give as array of objects 

var item3 = [{ header: { text: 'Snapchat' }, content: 'Snapchat app' }]; 

 

// then we can use the methods 

tabObj.addTab(item3, 2); 

We have attached a sample for your reference, please find the sample at the following location: https://stackblitz.com/edit/lcb5rz-q5sfgr  

Kindly refer to the following API link for further reference: https://ej2.syncfusion.com/javascript/documentation/api/tab/#addtab  

Please let us know if you need any further assistance on this. 

Regards, 

Prince 

[Travis]

Ahh so simple.  Thanks

How do I change the color the selected text and underline in the tabs?  What are the css classes I need to modify the color of the font and underlines?

[Deepa Loganathan]

Hi Travis,  

 

Thanks for the update. 

 

You could change the color of Text and high indicator by overriding the below styles in your application.  

 

   

.e-tab .e-tab-header .e-indicator { // To override the style of highlight indecator 

    background: #1639e3; 

    } 

 

    // To override the color of active Tab items' text 

    .e-tab .e-tab-header .e-toolbar-item.e-active .e-tab-text, .e-tab .e-tab-header             .e-toolbar-item.e-active .e-tab-icon, .e-tab .e-tab-header .e-toolbar-item.e-active         .e-tab-wrap:hover .e-tab-text, .e-tab .e-tab-header .e-toolbar-item.e-active                .e-tab-wrap:hover .e-tab-icon { 

        color: #1639e3; 

    } 

 

 

Please find the sample for your reference.  

 

https://stackblitz.com/edit/lcb5rz-fcnfwq?file=index.html  

 

If you would like to customize the existing theme common to all the controls, we suggest using our theme studio application.  Kindly check the below pages to explore more about Theme studio. 

 

Theme Studio usage: https://ej2.syncfusion.com/aspnetcore/documentation/appearance/theme-studio  

 

Theme Studio application: https://ej2.syncfusion.com/themestudio/?theme=material  

 

Themes supported: https://ej2.syncfusion.com/aspnetcore/documentation/appearance/theme/  

 

Kindly get back to us in case of any further queries. 

 

Regards,  

Deepa L. 

[Travis]

Thanks for the help

[Deepa Loganathan]

Hi Travis,   

 

Most welcome. We hope the solution provided was helpful. 

 

Please let us know if you have any further concerns.  

 

Regards,  

Deepa L.