The checkbox fails to display as selected in the user interface despite setting the checked property to true in JavaScript

In the table generated dynamically using an ng-repeat, I have checkboxes.

The checkboxes are created as shown below:

<input type="checkbox" id="chkView{{::myObj.TeamId}}" 
        ng-disabled="disableView(myObj)" 
        ng-click="setViewSelection(myObj.TeamId, this.checked)">
    

Intentionally, there is no ng-model attribute assigned to the checkboxes. The idea was to directly manage the checked status of each checkbox through JavaScript.

Strange enough, updating the checked property of the checkbox programmatically using JavaScript doesn't reflect on the UI. For instance, if I run:

document.getElementById('chkView27').checked = true;

Even though the above code logs true when checked via console,

console.log(document.getElementById('chkView27').checked);

The browser still displays the checkbox as unchecked. I've ensured that no other factors interfere with the checked property post-update. It seems like the UI fails to update. Any insights into why?

UPDATE: Following prasad's advice, I attempted wrapping the statement in $scope.$apply:

$scope.$apply(function() {
        document.getElementById('chkView27').checked = 'checked';
    });
    

This results in Angular throwing an "Action already in progress" error.

https://docs.angularjs.org/error/$rootScope/inprog?p0=$digest

Answer №1

Make sure to also set the checked attribute to the value "checked":

document.getElementById('chkView27').checked = 'checked';

Answer №2

When manipulating the DOM directly in JavaScript, it can sometimes go unnoticed by Angular since it doesn't have visibility over these changes. If you make modifications in the controller itself, they should take effect. However, if you're making alterations using plain JavaScript, you'll need to utilize $apply to alert Angular to the changes made in the DOM so that it can update accordingly.

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