當單擊按鈕時，我想更改顏色，當單擊同一按鈕時，我想返回到原始顏色?，F在，當單擊按鈕時，所有行都會改變顏色。html<table>      <tbody ng-repeat="field in availableFields">        <tr  ng-class="{'orderTypeTableRowSelected':tableRowTrueOrFalse}">                <td style="padding:3px;">{{field.name}}</td>                <td style="padding:3px;">                <button type="button" ng-click="orderTypeTableRowSelected(field)" class="btn btn-danger" style="margin-left:10px;"><i class="fas fa-check"></i>&nbsp;Required</button>        <button type="button" class="btn btn-warning"><i class="fas fa-check"></i>&nbsp;Default&nbsp;&nbsp;&nbsp;</button>                </td>    </tr>    </tbody></table>CSS<style>    .orderTypeTableRowSelected {        background-color: #E0F7FA;    }</style>有角的        $scope.tableRowTrueOrFalse = false;        $scope.orderTypeTableRowSelected = function (field) {            $scope.tableRowTrueOrFalse = !$scope.tableRowTrueOrFalse;            console.log(field);        };