What is the process to access array elements in AngularJS?

When coding in HTML,
<select class="element-margin-top" ng-model="vm.selectedRole" ng-options="(roleName,enabled) in vm.roleNames">
                <option value="">All Roles</option>{{vm.roles[0]}}
            </select>

I am trying to populate all the array elements as select options, but I'm encountering an error regarding (roleName,enabled) in vm.roleNames that I am unable to understand.

In JavaScript:
 var vm = this;
 vm.roleNames = ['SuperAdmin','Admin','Retailer','Manufacturer'];
 vm.selectedRole = vm.roleNames[0];

I want the first element to be automatically selected by default.

javascriptangularjs

Answer №1

ng-options="(name,status) in vm.userStatus"
in this scenario, vm.userStatus represents an array, where name serves as the index and status is the actual "name"

Therefore, your code ought to resemble this:

<select class="element-margin-top" ng-model="vm.selectedUser" ng-options="(index,name) as name in vm.userNames">
         <option value="">All Users</option>
</select>

Answer №2

Here's a suggestion: to have the first option selected by default, try using $first.

<select   ng-model="selectedRole">
                        <option ng-repeat="name in roleNames "
                            ng-selected="$first" value="{{name}}">{{name}}</option>
                </select>

Answer №3

When it comes to coding in HTML, you can use the following snippet:

<select class="element-margin-top" ng-model="vm.selectedOption">
                    <option value="">All Roles</option>
                    <option ng-repeat="item in vm.optionNames" value="{{item}}">{{item}}</option>
                </select>

For JavaScript, consider this example:

vm.optionNames = ['User', 'Account', 'Brand'];
  vm.selectedOption = vm.optionNames[-1];

If you want to learn more about ng-options in AngularJS, take a look at this informative article.

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