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Diffstat (limited to 'src')
| -rw-r--r-- | src/apis.js | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/apis.js b/src/apis.js index 6dd41fc4..b77161fb 100644 --- a/src/apis.js +++ b/src/apis.js @@ -239,6 +239,44 @@ var angularArray = { * @ngdoc function * @name angular.Array.count * @function + * + * @description + * Determines the number of elements in an array. Optionally it will count only those elements + * for which the `condition` evaluets to `true`. + * + * Note: this function is used to augment the Array type in angular expressions. See + * {@link angular.Array} for more info. + * + * @param {Array} array The array to count elements in. + * @param {(Function()|string)=} condition A function to be evaluated or angular expression to be + * compiled and evaluated. The element that is currently being iterated over, is exposed to + * the `condition` as `this`. + * @returns {number} Number of elements in the array (for which the condition evaluates to true). + * + * @example + <pre ng:init="items = [{name:'knife', points:1}, + {name:'fork', points:3}, + {name:'spoon', points:1}]"></pre> + <ul> + <li ng:repeat="item in items"> + {{item.name}}: points= + <input type="text" name="item.points"/> <!-- id="item{{$index}} --> + </li> + </ul> + <p>Number of items which have one point: <em>{{ items.$count('points==1') }}</em></p> + <p>Number of items which have more than one point: <em>{{items.$count('points>1')}}</em></p> + + @scenario + it('should calculate counts', function() { + expect(binding('items.$count(\'points==1\')')).toEqual(2); + expect(binding('items.$count(\'points>1\')')).toEqual(1); + }); + + it('should recalculate when updated', function() { + using('.doc-example li:first-child').input('item.points').enter('23'); + expect(binding('items.$count(\'points==1\')')).toEqual(1); + expect(binding('items.$count(\'points>1\')')).toEqual(2); + }); */ 'count':function(array, condition) { if (!condition) return array.length; |