Data Binding in JQuery Rotator widget

15 Dec 201710 minutes to read

Rotator provides a flexible approach for binding the data from various data sources. There are various properties in Toolbar for Data Binding. The value set to this property is object type.

Data fields and Configuration

The following sub-properties provide a way to bind the data either locally/remotely to the Rotator control. The value set to this property is object type.

DataSource

This property specifies the list of data that contains a set of data fields. Each data value is used to render an item for the Rotator. The value set to this property is object type.

Fields

It defines mapping fields for the data items of the Rotator. The value set to this property is object type.

Text

It specifies the text content of the tag. The value set to this property is string type.

URL

This property specifies the URL for an image. The value set to this property is string type.

Query

This property retrieves data from remote data. This property is applicable only when a remote data source is used. Each data value is used to render an item for the Rotator. The value set to this property is object type.

Local data binding

Rotator provides the data binding support for the Rotator item. So you can bind the data from JSON Data. For this behavior, you need to map the corresponding filed with their column names. The data can be bound as a list and it is assigned to dataSource property. You can refer the following code example to bind local data.

html

<div class="cols-sample-area">
  <ul id="sliderContent"></ul>
</div>

javascript

$(function () {
        // declaration
        var website = [
      { text: "Beautiful Bird", url: "../images/rotator/bird.jpg" },
      { text: "Colorful Night", url: "../images/rotator/night.jpg" },
      { text: "Technology", url: "../images/rotator/tablet.jpg" },
      { text: "Nature", url: "../images/rotator/nature.jpg" },
      { text: "Snow Fall", url: "../images/rotator/snowfall.jpg" },
      { text: "Credit Card", url: "../images/rotator/card.jpg" },
      { text: "Amazing Sculptures", url: "../images/rotator/sculpture.jpg" }
        ];
        $("#sliderContent").ejRotator({
            slideWidth: "600px",
            frameSpace: "0px",
            displayItemsCount: "1",
            slideHeight: "350px",
            navigateSteps: "1",
            enableResize: true,
            pagerPosition: ej.Rotator.PagerPosition.Outside,
            dataSource: website,
            orientation: ej.Orientation.Horizontal,
            showPager: true,
            enabled: true,
            showCaption: true,
            allowKeyboardNavigation: true,
            enableRTL: true,
            showPlayButton: true,
            animationType: "slide"
        });
    });

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KnockoutJS support

Knockout support allows you to bind the HTML elements against any of the available data models.

Two types of Knockout binding are supported,

One-way binding
Two-way binding

One way binding refers to the process of applying observable values to all the available properties of the Rotator. But the changes made in Rotator widget are not reflected and triggered in turn to the observable collection. This kind of binding is applied to all the properties of the Rotator.

Two-way binding supports both the processes – it applies the observable values to the Rotator properties as well as the changes made in the Rotator widget are also reflected back and triggered within the observable collections.

For more information about the Knockout binding, you can refer the online documentation in the following link location,

https://help.syncfusion.com/js/knockoutjs

Add the following script files along with the given code to access KnockoutJS binding. They have JS library for KnockoutJS binding.

knockout-min.js
ej.widget.ko.min.js

The link for those script files are as follows:

http://cdn.syncfusion.com/js/assets/external/knockout.min.js

http://cdn.syncfusion.com/19.3.0.43/js/common/ej.widget.ko.min.js

The following code example depicts the way to bind data to the Rotator through the Knockout support.

html

<body data-autoinit="false">
  <div class="cols-sample-area">
      <ul id="sliderContent" data-bind="ejRotator :{dataSource:dataList,slideWidth:width,slideHeight:height}" />
  </div>
</body>

javascript

$(function () {
        var imageList = [
          { text: "bird", url: "../images/rotator/bird.jpg" },
          { text: "night", url: "../images/rotator/night.jpg" },
          { text: "tablet", url: "../images/rotator/tablet.jpg" },
          { text: "nature", url: "../images/rotator/nature.jpg" },
          { text: "snowfall", url: "../images/rotator/snowfall.jpg" },
          { text: "card", url: "../images/rotator/card.jpg" },
          { text: "sculpture", url: "../images/rotator/sculpture.jpg" }
        ];
    
        window.viewModel = {
            dataList: ko.observableArray(imageList),
            height: ko.observable("350px"),
            width: ko.observable("600px"),
        };
        ko.applyBindings(viewModel);
    });

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AngularJS support

Rotator is availed with two types of AngularJS support namely,

One way binding
Two way binding

One way binding refers to the process of applying scope values to all the available properties of the Rotator. But the changes made in Rotator widget are not reflected or triggered in turn to the scope collection. This kind of binding is applied to all the properties of the Rotator.

Two-way binding supports both the processes – it applies the scope values to the Rotator properties as well as the changes made in the Rotator widget are also reflected back and triggered within the AngularJS scope change function.

To know more details about the AngularJS binding, you can refer the following link location,

https://help.syncfusion.com/js/angularjs

Add the following script files as given in the following example to access AngularJS binding. They have JS library for AngularJS binding.

angular-min.js
ej.widget.angular.min.js

The following code example depicts the way to bind data to the Rotator widget through AngularJS support.

html

<!DOCTYPE html>
<html lang="en" ng-app="rotatorApp">
   <head>
      <title>Essential Studio for JavaScript :AngularJS Support for Toolbar</title>
      <meta name="viewport" content="width=device-width, initial-scale=1.0" charset="utf-8" />
      <link href="http://cdn.syncfusion.com/19.3.0.43/js/web/flat-azure/ej.web.all.min.css" rel="stylesheet" />
      <!--scripts-->
      <script src="http://cdn.syncfusion.com/js/assets/external/jquery-1.10.2.min.js"></script>
      <script src="http://cdn.syncfusion.com/js/assets/external/jquery.easing.1.3.min.js"> </script>
      <script src="[http://cdn.syncfusion.com/js/assets/external/angular.min.js"></script>
      <script src="http://cdn.syncfusion.com/19.3.0.43/js/web/ej.web.all.min.js"></script>
      <script src="http://cdn.syncfusion.com/19.3.0.43/js/web/ej.unobtrusive.min.js"></script>
      <script src="http://cdn.syncfusion.com/19.3.0.43/js/common/ej.widget.angular.min.js"></script>
   </head>
   <body ng-controller="RotatorCtrl">
      <div class="cols-sample-area">
         <ul id="sliderContent" ej-rotator e-datasource="dataList" e-slidewidth="600px" e-slideheight="350px" />
      </div>
   </body>
</html>

javascript

var list = [
      { text: "snowfall", url: "../images/rotator/snowfall.jpg" },
      { text: "tablet", url: "../images/rotator/tablet.jpg" },
      { text: "nature", url: "../images/rotator/nature.jpg" },
      { text: "card", url: "../images/rotator/card.jpg" },
      { text: "bird", url: "../images/rotator/bird.jpg" },
      { text: "wheat", url: "../images/rotator/wheat.jpg" },
      { text: "night", url: "../images/rotator/night.jpg" }];
    
    angular.module('rotatorApp', ['ejangular']).controller('RotatorCtrl', function ($scope) {
        $scope.dataList = list;
    });

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