Having trouble retrieving the default selected value from a drop-down list using angular.js

I am having trouble retrieving the default value of my dropdown list using angular.js. Below is an explanation of my code:

<th>
    <select style="width:100%; border:none; font-weight:bold;" ng-options="sub.name for sub in noCourse track by sub.value" ng-model="search" ng-change="selectedCourseTable();" >
        <option value="">Course Name</option>
    </select>
</th>

Here, I am fetching data dynamically and binding it in a select tag. The above code generates the following HTML output:

<select style="width:100%; border:none; font-weight:bold;" ng-options="sub.name for sub in noCourse track by sub.value" ng-model="search" ng-change="selectedCourseTable();" class="ng-valid ng-touched ng-dirty ng-valid-parse">
    <option value class selected="selected">Course Name</option>
    <option value="Master of computer application" label="Master of computer application">Master of computer application</option>
    <option value="Bachelor of Technology" label="Bachelor of Technology">Bachelor of Technology</option>
    <option value="Master in Technology" label="Master in Technology">Master in Technology</option>
</select>

subjectController.js:

$scope.selectedCourseTable=function(){
        if($scope.search.value=='Bachelor of Technology'){
            alert($scope.search.value);
        }
        if($scope.search.value=='Master in Technology'){
            alert($scope.search.value);
        }
        if($scope.search.value=='Master of computer application'){
            alert($scope.search.value);
        }
        if($scope.search==''){
            alert($scope.search.value);
        }
    }

In this code, I am unable to check when the user selects the text "Course Name" in the ng-change event. I can check the other select options by using $scope.search.value, but when the user selects the default text "Course Name", it cannot be checked. Can someone help me resolve this issue?

Answer №1

To resolve the issue, simply remove the

<option value="">Course Name</option>
from your template and add a default selection to your object list.

Update where you define noCourse:

$scope.noCourse = [{
    name :'Course Name',
    value: ''
}, /*rest of the values*/];
$scope.search = $scope.noCourse[0];

Make sure to adjust the following line to check the object:

// Replace this:
if ($scope.search == '') {
    alert($scope.search.value);
}

// With this
if ($scope.search.value == '') {
    alert($scope.search.value);
}

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