Angular JS: Detect if ng-bind-html finished loading then highlight code syntax

Question

I am using ng-bind-html for binding data that I get from database.

   


app.controller(\'customersC         


        

Answer 1

So here's what is happening:

1. You update the $scope.myHTML value
2. You run your jQuery each() loop
3. The digest cycle runs and your template is updated

Notice that the digest cycle runs after your jQuery each() loop -- or, more specifically, after your $http callback function is finished running.

That means the value of $scope.myHTML in your controller is not applied to the ng-bind-html directive until after your loop has already finished.

To overcome this, you could use Angular's $timeout service instead of the native browser setTimeout() method. By default, $timeout will invoke the callback function during the next digest cycle, which means it will run after the changes to $scope.myHTML are applied to the ng-bind-html directive (as long as you update $scope.myHTML before calling $timeout()).

Working example: JSFiddle

Answer 2

as you know the statements execute asynchronously, if there is no timeout $('pre code') will be empty as the DOM is still not rendered. use $timeout instead of setTimeout for the same.

Answer 3

This is where directives come in very handy. Why not append the HTML yourself and then run the highlighter?

Template:

<div ng-model="myHTML" highlight></div>

Directive:

.directive('highlight', [
    function () {
        return {
            replace: false,
            scope: {
                'ngModel': '='
            },
            link: function (scope, element) {
                element.html(scope.ngModel);
                var items = element[0].querySelectorAll('code,pre');
                angular.forEach(items, function (item) {
                    hljs.highlightBlock(item);
                });

            }
        };
    }
]);

Example: http://plnkr.co/edit/ZbcNgfl6xL2QDDqL9cKc?p=preview