AngularJS Basics with Example
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This document provides a summary of the AngularJS framework. It discusses the following key points in 3 sentences: 1. AngularJS aims to make HTML better suited for building applications by teaching the browser new syntax like directives. This allows more of the application logic to be handled in the declarative HTML instead of JavaScript code. 2. Angular follows an MVC pattern where the controller contains the business logic and data, the view displays the data through bindings, and the scope acts as a synchronization mechanism between the model and view. 3. Features like data binding, directives, dependency injection and routing allow building dynamic and interactive single-page applications by synchronizing the model and view through declarative templates and separating concerns
![Controller
<table class="table table-stripped" ng-controller="TodoCtrl">
function TodoCtrl(scope) {
scope.todos = [
{
'id': 1001,
'done': false,
'name': 'Do Groceries',
'deadline': new Date()
},
{
'id': 1002,
'done': false,
'name': 'Barber the cat',
'deadline': new Date()
}];
scope.setTrue = function(id) {
var el = (function(id){
for (var i=0; i<scope.todos.length; i++) {
if (scope.todos[i].id === id) {
return scope.todos[i]
}
}
})(id);
el.done = true;
}
}
TodoCtrl.$inject = ['$scope'];](https://image.slidesharecdn.com/02angularjs-120816062239-phpapp02/85/AngularJS-Basics-with-Example-16-320.jpg)
![Controller
<table class="table table-stripped" ng-controller="TodoCtrl">
function TodoCtrl(scope) {
scope.todos = [
{
'id': 1001,
'done': false,
'name': 'Do Groceries',
'deadline': new Date()
},
{
'id': 1002,
'done': false,
'name': 'Barber the cat',
'deadline': new Date()
}];
scope.setTrue = function(id) {
var el = (function(id){
for (var i=0; i<scope.todos.length; i++) {
if (scope.todos[i].id === id) {
return scope.todos[i]
}
}
})(id);
el.done = true;
}
}
TodoCtrl.$inject = ['$scope'];](https://image.slidesharecdn.com/02angularjs-120816062239-phpapp02/85/AngularJS-Basics-with-Example-17-320.jpg)
![Controller
<table class="table table-stripped" ng-controller="TodoCtrl">
function TodoCtrl(scope) {
scope.todos = [
{
'id': 1001,
'done': false,
'name': 'Do Groceries',
'deadline': new Date()
},
{
'id': 1002,
'done': false,
'name': 'Barber the cat',
'deadline': new Date()
}];
scope.setTrue = function(id) {
var el = (function(id){
for (var i=0; i<scope.todos.length; i++) {
if (scope.todos[i].id === id) {
return scope.todos[i]
}
}
})(id);
el.done = true;
}
}
TodoCtrl.$inject = ['$scope'];](https://image.slidesharecdn.com/02angularjs-120816062239-phpapp02/85/AngularJS-Basics-with-Example-18-320.jpg)
![Controller
<table class="table table-stripped" ng-controller="TodoCtrl">
function TodoCtrl(scope) {
scope.todos = [
{
'id': 1001,
'done': false,
'name': 'Do Groceries',
'deadline': new Date()
},
{
'id': 1002,
'done': false,
'name': 'Barber the cat',
'deadline': new Date()
}];
scope.setTrue = function(id) {
var el = (function(id){
for (var i=0; i<scope.todos.length; i++) {
if (scope.todos[i].id === id) {
return scope.todos[i]
}
}
})(id);
el.done = true;
}
}
TodoCtrl.$inject = ['$scope'];](https://image.slidesharecdn.com/02angularjs-120816062239-phpapp02/85/AngularJS-Basics-with-Example-21-320.jpg)
![Model: attrs of Scope
<table class="table table-stripped" ng-controller="TodoCtrl">
function TodoCtrl(scope) {
scope.todos = [
{ Model
'id': 1001,
'done': false,
'name': 'Do Groceries',
'deadline': new Date()
},
{
'id': 1002,
'done': false,
'name': 'Barber the cat',
'deadline': new Date()
}];
scope.setTrue = function(id) {
var el = (function(id){
for (var i=0; i<scope.todos.length; i++) {
if (scope.todos[i].id === id) {
return scope.todos[i]
}
}
})(id);
el.done = true;
}
}
TodoCtrl.$inject = ['$scope'];](https://image.slidesharecdn.com/02angularjs-120816062239-phpapp02/85/AngularJS-Basics-with-Example-22-320.jpg)
![Routing
angular.module('myApp').
config(['$routeProvider' ,
function($routeProvider ) {
$routeProvider .when(
'/folder/:name' ,
{templateUrl : 'partials/folder.html' ,
controller : FolderCtrl
});
}])](https://image.slidesharecdn.com/02angularjs-120816062239-phpapp02/85/AngularJS-Basics-with-Example-25-320.jpg)
AngularJS Basics with Example
- 1. 02 AngularJS Framework Analysis Public Code Repository by Sergey N. Bolshchikov http://bolshchikov.net [email protected] New ProImage, 2012
- 2. Outline I. Introduction II. Philosophy
- 3. Outline I. Introduction II. Philosophy ay od et tlin in ou ive No t d J us
- 4. Introduction I want to build well structured and dynamic web application. Header-Navigation Bar Content Wrapper click click Tree Content Footer
- 5. Introduction Traditional solution: < 37% > 63% LOC LOC Javascript HTML
- 6. Philosophy ● Angular is what HTML could have been if it had been designed for applications. ● HTML is a great declarative language for static documents. It does not contain much in the way of creating application. ● Building web-applications is an exercise in what do I have to do, so that I trick the browser in to do what I want. ● That's why we have frameworks - set of utility functions and libraries for DOM manipulation. ● Angular takes another approach. ● Angular teaches the browser new syntax.
- 7. Introduction AngularJS solution: > 41% < 59% LOC LOC HTML Java script
- 8. Static HTML <!doctype html> <html lang="en" ng-app> <head> <meta charset="utf-8"> <title>My AngularJS App</title> </head> <body> <table class="table table-stripped"> <thead> <tr> <th>ID</th><th>Complete</th><th>Name</th><th>Deadline</th> </tr> </thead> <tbody> <tr> <td>1001</td><td>false</td><td>Do Groceries</td><td>01/08/12</td> </tr> <tr> <td>1002</td><td>false</td><td>Barber the cat</td><td>01/08/12</td> </tr> </tbody> </table> </body> </html> See example live
- 9. Declarative HTML <!doctype html> <html lang="en" ng-app> <head> <meta charset="utf-8"> <title>My AngularJS App</title> </head> <body> <table class="table table-stripped" ng-controller="TodoCtrl"> <thead> <tr> <th>ID</th><th>Complete</th><th>Name</th><th>Deadline</th> </tr> </thead> <tbody> <tr ng-repeat="todo in todos"> <td ng-click="setTrue(todo.id)">{{todo.id}}</td> <td>{{todo.done}}</td> <td>{{todo.name}}</td> <td>{{todo.deadline}}</td> </tr> </tbody> </table> </body> </html> See example live
- 10. Declarative HTML <!doctype html> <html lang="en" ng-app> <head> <meta charset="utf-8"> <title>My AngularJS App</title> </head> <body> <table class="table table-stripped" ng-controller="TodoCtrl"> <thead> <tr> <th>ID</th><th>Complete</th><th>Name</th><th>Deadline</th> </tr> </thead> <tbody> <tr ng-repeat="todo in todos"> <td ng-click="setTrue(todo.id)">{{todo.id}}</td> <td>{{todo.done}}</td> <td>{{todo.name}}</td> <td>{{todo.deadline}}</td> </tr> </tbody> </table> </body> </html>
- 11. Declarative HTML <!doctype html> <html lang="en" ng-app> <head> <meta charset="utf-8"> <title>My AngularJS App</title> </head> <body> <table class="table table-stripped" ng-controller="TodoCtrl"> <thead> <tr> <th>ID</th><th>Complete</th><th>Name</th><th>Deadline</th> </tr> </thead> <tbody> <tr ng-repeat="todo in todos"> <td ng-click="setTrue(todo.id)">{{todo.id}}</td> <td>{{todo.done}}</td> <td>{{todo.name}}</td> <td>{{todo.deadline}}</td> </tr> </tbody> </table> </body> </html>
- 12. Declarative HTML <!doctype html> <html lang="en" ng-app> <head> <meta charset="utf-8"> <title>My AngularJS App</title> </head> <body> <table class="table table-stripped" ng-controller="TodoCtrl"> <thead> <tr> <th>ID</th><th>Complete</th><th>Name</th><th>Deadline</th> </tr> </thead> <tbody> <tr ng-repeat="todo in todos"> <td ng-click="setTrue(todo.id)">{{todo.id}}</td> <td>{{todo.done}}</td> <td>{{todo.name}}</td> <td>{{todo.deadline}}</td> </tr> </tbody> </table> </body> </html>
- 13. Declarative HTML <!doctype html> <html lang="en" ng-app> <head> <meta charset="utf-8"> <title>My AngularJS App</title> </head> <body> <table class="table table-stripped" ng-controller="TodoCtrl"> <thead> <tr> <th>ID</th><th>Complete</th><th>Name</th><th>Deadline</th> </tr> </thead> <tbody> <tr ng-repeat="todo in todos"> <td ng-click="setTrue(todo.id)">{{todo.id}}</td> <td>{{todo.done}}</td> <td>{{todo.name}}</td> <td>{{todo.deadline}}</td> </tr> </tbody> </table> </body> </html>
- 14. MVC Angular says: "There are many ways to structure the code for an application. For Angular apps, we encourage the use of the Model- View-Controller (MVC) design pattern to decouple the code and to separate concerns. With that in mind, let's use a little Angular and JavaScript to add model, view, and controller components to our app."
- 15. Controller ○ a controller is a JavaScript function ○ It contains data ○ It specifies the behavior ○ It should contain only the business logic needed for a single view.
- 16. Controller <table class="table table-stripped" ng-controller="TodoCtrl"> function TodoCtrl(scope) { scope.todos = [ { 'id': 1001, 'done': false, 'name': 'Do Groceries', 'deadline': new Date() }, { 'id': 1002, 'done': false, 'name': 'Barber the cat', 'deadline': new Date() }]; scope.setTrue = function(id) { var el = (function(id){ for (var i=0; i<scope.todos.length; i++) { if (scope.todos[i].id === id) { return scope.todos[i] } } })(id); el.done = true; } } TodoCtrl.$inject = ['$scope'];
- 17. Controller <table class="table table-stripped" ng-controller="TodoCtrl"> function TodoCtrl(scope) { scope.todos = [ { 'id': 1001, 'done': false, 'name': 'Do Groceries', 'deadline': new Date() }, { 'id': 1002, 'done': false, 'name': 'Barber the cat', 'deadline': new Date() }]; scope.setTrue = function(id) { var el = (function(id){ for (var i=0; i<scope.todos.length; i++) { if (scope.todos[i].id === id) { return scope.todos[i] } } })(id); el.done = true; } } TodoCtrl.$inject = ['$scope'];
- 18. Controller <table class="table table-stripped" ng-controller="TodoCtrl"> function TodoCtrl(scope) { scope.todos = [ { 'id': 1001, 'done': false, 'name': 'Do Groceries', 'deadline': new Date() }, { 'id': 1002, 'done': false, 'name': 'Barber the cat', 'deadline': new Date() }]; scope.setTrue = function(id) { var el = (function(id){ for (var i=0; i<scope.todos.length; i++) { if (scope.todos[i].id === id) { return scope.todos[i] } } })(id); el.done = true; } } TodoCtrl.$inject = ['$scope'];
- 19. Scope ○ an object that refers to the application model (application itself) ○ an execution context for expressions like {{ todo.name }} ○ Scopes are arranged in hierarchical structure which mimic the DOM structure of the application ○ Scopes can watch expressions and propagate events
- 20. Scope <html ng-app> root Scope 01/ 1001 false Groceries 08 <table ng-controller="TodoCtrl"> 01/ TodoCtrl 1002 false Barber 08 <tr ng-repeat="todo in todos"> Scope <td>{{todo.id}}</td> Repeater </tr> Repeater Scope Scope </table> </html> Template Model View
- 21. Controller <table class="table table-stripped" ng-controller="TodoCtrl"> function TodoCtrl(scope) { scope.todos = [ { 'id': 1001, 'done': false, 'name': 'Do Groceries', 'deadline': new Date() }, { 'id': 1002, 'done': false, 'name': 'Barber the cat', 'deadline': new Date() }]; scope.setTrue = function(id) { var el = (function(id){ for (var i=0; i<scope.todos.length; i++) { if (scope.todos[i].id === id) { return scope.todos[i] } } })(id); el.done = true; } } TodoCtrl.$inject = ['$scope'];
- 22. Model: attrs of Scope <table class="table table-stripped" ng-controller="TodoCtrl"> function TodoCtrl(scope) { scope.todos = [ { Model 'id': 1001, 'done': false, 'name': 'Do Groceries', 'deadline': new Date() }, { 'id': 1002, 'done': false, 'name': 'Barber the cat', 'deadline': new Date() }]; scope.setTrue = function(id) { var el = (function(id){ for (var i=0; i<scope.todos.length; i++) { if (scope.todos[i].id === id) { return scope.todos[i] } } })(id); el.done = true; } } TodoCtrl.$inject = ['$scope'];
- 23. Template <!doctype html> <html lang="en" ng-app> <head> <meta charset="utf-8"> <title>My AngularJS App</title> </head> <body> <table class="table table-stripped" ng-controller="TodoCtrl"> <thead> <tr> <th>ID</th><th>Complete</th><th>Name</th><th>Deadline</th> </tr> </thead> <tbody> <tr ng-repeat="todo in todos"> <td ng-click="setTrue(todo.id)">{{todo.id}}</td> <td>{{todo.done}}</td> <td>{{todo.name}}</td> <td>{{todo.deadline}}</td> </tr> </tbody> </table> </body> </html>
- 24. Data-binding and interaction See live example
- 25. Routing angular.module('myApp'). config(['$routeProvider' , function($routeProvider ) { $routeProvider .when( '/folder/:name' , {templateUrl : 'partials/folder.html' , controller : FolderCtrl }); }])
- 26. Performance ● Browser support: IE 8+, Chrome, FF, Safari, Opera ● Framework size: 503KB ● Application size: 756KB