Having trouble with jQuery on my webpage

Looking for assistance with a technical issue I'm facing...

I am currently working with AngularJS and have integrated jQuery into my project. However, I've encountered an issue where the jQuery code is not functioning as expected on the HTML page. Can someone explain why this might be happening?

$('#setting').change(function() {
  alert("hi");
});
<div class="content table-responsive table-full-width">
  <table class="table table-hover table-striped>
    <thead>
      <th>Settings</th>
    </thead>
    <tbody>
      <tr>
        <td>
          <select id="setting" class="form-control">
            <option>---Select---</option>
            <option ng-repeat="item in settings" value="{{item.id}}">{{item.name}}</option>
          </select>
          <div id="btn" class="col-md-12" style="margin-top: 16px;">
            <input type="button" name="Activate" value="Activate" />
            <input type="button" name="Deactivate" value="Deactivate" />
          </div>
        </td>
      </tr>
    </tbody>
  </table>
</div>

If anyone has insights or solutions to this issue, your help would be greatly appreciated. Thank you in advance!

javascriptjqueryhtmlangularjs

Answer №1

Instead of using jQuery, consider implementing the ng-change directive in AngularJS:

<select id="setting" class="form-control" ng-change='functionToCall()'>

In your controller's scope object, include this function:

$scope.functionToCall = function(){
   alert('hi');
};

If you are new to AngularJS, it is advisable to avoid using jQuery-style code as AngularJS has its own unique approach. Here is a useful starting point: "Thinking in AngularJS" if I have a jQuery background?

Answer №2

It is a common issue that arises when using jQuery with DOM elements that have not yet been created.

During the initial loading of your webpage, Angular (most likely) has not yet taken effect and populated your dropdown list.

An effective solution to this problem is to utilize Angular's ng-change instead. This way, your function will be triggered when an item is selected from the dropdown list.

You can see an example of this concept in action here:

Angular tutorial

In this scenario, I demonstrate updating a customer's details whenever a new customer is selected by the user:

https://i.stack.imgur.com/DRaSt.png

The code snippet below shows how to populate the list and execute a function when the selected item changes:

    <select ng-model="selectedCustomer" 
      ng-change="loadOrders();" 
      ng-options="customer as customer.CompanyName for customer in listOfCustomers" >
    </select>

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