Angular ng-keyup not working when calling a function

Problem

I've got this code:

<input type="text" ng-model="keywords" ng-keyup="search()">

It doesn't call the search function where as, if I do ng-click="search()" it does work. Why is this?

Problem courtesy of: Elliott Coe

Solution

ng-keyup works perfectly fine for me. See this fiddle for an example: http://jsfiddle.net/r74a5m25/

Code:

<div ng-controller="MyCtrl">
    Hello:
    <input ng-model="testModel" ng-keyup="search()"/>
</div>


function MyCtrl($scope, $log) {

    $scope.search = function() {
        alert('test');  
    };
}

Make sure you have an up to date version of angular in order to use ng-keyup. It looks like it has been available since version 1.0.8.

Solution courtesy of: Matt Way

Discussion

Try to $watch your variable

JS

$scope.$watch('search.input',function(){
   $scope.doSearch('watched!'); //call your function here
});

HTML

<input type="text" placeholder="ابحث" ng-model="search.input">
Discussion courtesy of: amrography

This recipe can be found in it's original form on Stack Over Flow.