Utilizing $index in AngularJS while iterating through ng-repeat items

Here is an example of an unordered list:

<ul class="dropdown-menu inner" role="menu">
    <li ng-repeat="availableAlphaName in availableAlphaNames" data-original-index="0" data-optgroup="1" class="">
        <a tabindex="0" class="opt  " style="" data-tokens="null">
            <span class="text">{{availableAlphaName.Name}}</span>
            <span class="glyphicon glyphicon-ok check-mark"></span>
        </a>
    </li></ul>

data-original-index must have a unique index value. When setting data-original-index to $index, it always returns 0 due to each instance having its scope.

Can anyone provide a solution to this issue?

javascriptangularjsangularjs-ng-repeat

Answer №1

It is recommended to use the track by $index directive in the ng-repeat loop

    <li ng-repeat="availableAlphaName in availableAlphaNames track by $index" data-original-index={{$index}} data-optgroup="1" class="">
        <a tabindex="0" class="opt" style="" data-tokens="null">
            <span class="text">{{availableAlphaName.Name}}</span>
            <span class="glyphicon glyphicon-ok check-mark"></span>
        </a>
    </li>

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