AngularJS Essentials

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[ 25 ] Chapter 2 The ngClick directive and other event directives The ngClick directive is one of the most useful kinds of directives in the framework. It allows you to bind any custom behavior to the click event of the element. The following code is an example of the usage of the ngClick directive calling a function: index.html [Packt] Parking var parking = angular.module("parking", []); parking.controller("parkingCtrl", function ($scope) { $scope.appTitle = "[Packt] Parking"; $scope.cars = []; $scope.park = function (car) { car.entrance = new Date(); $scope.cars.push(car); delete $scope.car; }; }); Plate Entrance www.it-ebooks.info
Creating Reusable Components with Directives Park In the preceding code, there is another pitfall. Inside the ngClick directive, we will call the park function, passing car as a parameter. As long as we have access to the scope through the controller, it would not be easy if we just accessed it directly, without passing any parameter at all. Keep in mind that we must take care of the coupling level between the view and the controller. One way to keep it low is to avoid reading the scope object directly from the controller and replacing this intention by passing everything it needs with the parameter from the view. This will increase controller testability and also make the things more clear and explicit. Other directives that have the same behavior but are triggered by other events are ngBlur, ngChange, ngCopy, ngCut, ngDblClick, ngFocus, ngKeyPress, ngKeyDown, ngKeyUp, ngMousedown, ngMouseenter, ngMouseleave, ngMousemove, ngMouseover, ngMouseup, and ngPaste. The ngDisable directive The ngDisable directive can disable elements based on the Boolean value of an expression. In this next example, we will disable the button when the variable is true: Park In Chapter 3, Data Handling, we will learn how to combine this directive with validation techniques. [ 26 ] www.it-ebooks.info
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Page 3 and 4: AngularJS Essentials Copyright © 2
Page 5 and 6: About the Author Rodrigo Branas is
Page 7 and 8: About the Reviewers Andrei M. Eichl
Page 11 and 12: Table of Contents The ngIf directiv
Page 13 and 14: Table of Contents Chapter 7: Unit T
Page 15 and 16: Preface Only 2 months later, I laun
Page 17 and 18: Preface A block of code is set as f
Page 19 and 20: Preface Piracy Piracy of copyright
Page 21 and 22: Getting Started with AngularJS This
Page 23 and 24: Getting Started with AngularJS The
Page 25 and 26: Getting Started with AngularJS
Page 27 and 28: Getting Started with AngularJS app.
Page 31 and 32: Creating Reusable Components with D
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Page 67 and 68: Data Handling The following code is
Page 69 and 70: Data Handling Now, the output will
Page 71 and 72: Data Handling The expected result i
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Page 75 and 76: Data Handling Now, let's introduce
Page 77 and 78: Data Handling To finish, we can add
Page 79 and 80: Data Handling The plate must start
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Dependency Injection and Services I
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Dependency Injection and Services A
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Dependency Injection and Services {
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Scope What happens when we change t
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Scope if (newValue == oldValue) ret
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Scope ng-model="username" placehold
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Scope Consider the following code s
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Scope Now, we need to start tickGen
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Modules The UI module The UI module
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Modules }, template: "" + "{{title}
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Modules A major part
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Unit Testing The topics that we'll
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Unit Testing car.entrance = new Dat
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Unit Testing parkingService = _park
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Unit Testing Filters Next, we are g
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Unit Testing Creating the element w
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Unit Testing '' + '' + 'Please info
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Unit Testing $httpBackend.flush();
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Unit Testing var _saveCar = functio
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Unit Testing At the moment, we have
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Unit Testing R
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Unit Testing 'src/parkingCtrl.js',
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Automating the Workflow Installatio
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Automating the Workflow grunt.initC
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Automating the Workflow } }); dist:
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Automating the Workflow } }, lib: {
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Automating the Workflow Cache The r
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directives 129 filters 128 service
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installation, Grunt 146 installatio
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two-way data binding $apply functio
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Dependency Injection with AngularJS
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AngularJS Essentials

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