Home Web Front-end JS Tutorial How to Trigger jQuery Functions After ng-repeat Finishes Populating a Table?

How to Trigger jQuery Functions After ng-repeat Finishes Populating a Table?

Nov 30, 2024 am 08:39 AM

How to Trigger jQuery Functions After ng-repeat Finishes Populating a Table?

Triggering Events after ng-repeat Population

You want to execute a jQuery function on a div containing a table populated using ng-repeat, but neither $(document).ready() nor $scope.$on('$viewContentLoaded', myFunc) triggers it.

Custom Directive Approach

Directives provide a way to create custom functionality. Since there's no built-in event for the end of an ng-repeat loop, you can use a directive to accomplish this.

There are two scenarios to consider:

  1. Table-wide Manipulation: If you only need to style or add events to the entire table, you can use a directive that encompasses all the ng-repeat elements.
  2. Element-specific Manipulation: If you need to target individual elements, you can use a directive within the ng-repeat that will act on each element after its creation.

Properties for Triggering Events

Additionally, you can utilize the following properties with ng-repeat:

  • $index: The index of the current element.
  • $first: Boolean indicating if the element is the first in the list.
  • $middle: Boolean indicating if the element is in the middle of the list.
  • $last: Boolean indicating if the element is the last in the list.

Example

Consider the following HTML:

<div ng-controller="Ctrl" my-main-directive>
  <div ng-repeat="thing in things" my-repeat-directive>
    thing {{thing}}
  </div>
</div>
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You can define directives to manipulate the elements:

angular.module('myApp', [])
.directive('myRepeatDirective', function() {
  return function(scope, element, attrs) {
    angular.element(element).css('color','blue');
    if (scope.$last){
      window.alert("im the last!");
    }
  };
})
.directive('myMainDirective', function() {
  return function(scope, element, attrs) {
    angular.element(element).css('border','5px solid red');
  };
});
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In this example, the myRepeatDirective sets the color of each element to blue and alerts "im the last!" for the last element. The myMainDirective sets a border around the entire table.

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