Using Angular's ngBlur directive on multiple input fields

Question

Using Angular's ngBlur directive on multiple input fields

My current task involves capturing and saving all content on a webpage after it has been edited. For example, when a user clicks into an input field, enters data, and then clicks elsewhere, I would like to trigger a function to collect all the model data and store it in the browser's local storage.

<input ng-blur="functionName()" />

The traditional approach works well for single inputs, but what if there are multiple inputs:

<input ng-blur="functionName()" />
<input ng-blur="functionName()" />
<input ng-blur="functionName()" />
<input ng-blur="functionName()" />

Is there a way to apply the ng-blur effect to all inputs on a page without individually adding the ng-blur attribute to each one?

javascript angularjs

Answer 1

Answer №1

If you want a custom directive that can handle this task, consider the following solution which was inspired by a response to a similar query:

AngularJS 1.3 - Implementing `ng-change`-like feature for the entire form

While this code hasn't been tested yet, it should provide you with a good starting point:

.directive('inputsOnBlur', ['$parse', function($parse){
  return {
    link: function(scope, element, attrs){
       var cb = $parse(attrs.inputsOnBlur);
       element.find('input').on('blur', function(){
          cb(scope);
       });
    }
  }
}]);

To utilize this directive, follow the below example:

<form inputs-on-blur="doSomething()">
   <input />
   <input />
   <input />
</form>

Answer 2

If you want a custom directive that can handle this task, consider the following solution which was inspired by a response to a similar query:

AngularJS 1.3 - Implementing `ng-change`-like feature for the entire form

While this code hasn't been tested yet, it should provide you with a good starting point:

.directive('inputsOnBlur', ['$parse', function($parse){
  return {
    link: function(scope, element, attrs){
       var cb = $parse(attrs.inputsOnBlur);
       element.find('input').on('blur', function(){
          cb(scope);
       });
    }
  }
}]);

To utilize this directive, follow the below example:

<form inputs-on-blur="doSomething()">
   <input />
   <input />
   <input />
</form>

Answer 3

Answer №2

Absolutely, it's totally doable. You just have to dynamically include data-ng-blur in the input tag. Here is an example of the code you can use in your controller:


    var inputs = Array.prototype.slice.call(document.getElementsByTagName('input'));
    inputs.forEach(function (input) {
        input.setAttribute('data-ng-blur', 'functionName()');
        $compile(angular.element(input))($scope);
    });

Answer 4

Absolutely, it's totally doable. You just have to dynamically include data-ng-blur in the input tag. Here is an example of the code you can use in your controller:


    var inputs = Array.prototype.slice.call(document.getElementsByTagName('input'));
    inputs.forEach(function (input) {
        input.setAttribute('data-ng-blur', 'functionName()');
        $compile(angular.element(input))($scope);
    });

Using Angular's ngBlur directive on multiple input fields

Answer №1

Answer №2

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