How Do I Bind to List of Checkbox Values with Angularjs?

AngularJS provides a convenient way to bind to a list of checkbox values using the ng-model directive. This allows you to easily track the selected values and perform actions based on the user’s selection.

Here are two solutions to bind to a list of checkbox values with AngularJS:

Solution 1: Using ng-model with an array

In this solution, we can use an array to store the selected checkbox values. We can then bind this array to the ng-model directive of each checkbox input.

  
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Explanation:

In the above code snippet, we have an ng-repeat directive that iterates over the items array. For each item, we create a checkbox input with ng-model=”selectedItems[item]”. This binds the checkbox value to the selectedItems object, where the key is the item name and the value is a boolean indicating whether the checkbox is selected or not.

Solution 2: Using ng-checked with a function

In this solution, we can use ng-checked directive with a function to determine if a checkbox should be checked or not based on the selected items.

  
     {{item}}
  

Explanation:

In the above code snippet, we have an ng-repeat directive that iterates over the items array. For each item, we create a checkbox input with ng-checked=”isSelected(item)” and ng-click=”toggleSelection(item)”.

The isSelected function checks if the item is present in the selectedItems array using the indexOf method. If the item is found, it returns true, indicating that the checkbox should be checked. Otherwise, it returns false.

The toggleSelection function adds or removes the item from the selectedItems array based on its current presence. If the item is not present, it adds it to the array. If the item is already present, it removes it from the array.

Conclusion

By using either the ng-model directive with an array or the ng-checked directive with a function, you can easily bind to a list of checkbox values in AngularJS. Choose the solution that best fits your needs and enjoy the flexibility and power of AngularJS in handling checkbox selection.