before the effort to install the angular development environment, the following days are in the angular Chinese official online reading documents, follow the heroic tutorial step by step operation, familiar with the angular some basic characteristics, this part did not encounter any major problems, but also relatively smooth. These two days in the official docume
1 Angular programming Software: Webstorm2 Angular Environment Construction Nodejs, Angular cli,webstormNodejs Npm-v can see the version of Nodejs after installation is completesudo npm install-g @angular/cli (Install angular command line tool)Ng-v (view
Using angular in recent projects, the results found that the background was unable to get parameters, so a little bit of the difference between the two when sending Ajax. Note that the Ajax requests for angular and jquery are different. In jquery, the official document explains ContentType default is application/x-www-form-urlencoded; Charset=utf-8
ContentType (default: ‘applic
The benefits of Dependency injection (DI) are no longer to be mentioned, as is known with the spring Framework. Angularjs as the foreground JS frame. Support for Di is also provided. This is a feature that Javascript/jquery does not have.The Angularjs is related to di with Angular.module (), angular.injector (), NBSP; $injector, $provide object can be Applicationcontext.getbean () implemented; a dependency declaration, which can be configured in an XML file, You can also use annotations such
Angular 2 Study notes (a) first application
Building Custom Components
Accept user input from form (form)
Render a list of objects and use view warfare
Listen (intercepting) the user clicks the event and performs the action
Getting StartedtypescriptIt is recommended to start programming Angular 2 using TypeScript. Angular 2 has ES5 API,
In angular service, there are some services you have to understand, because he can be said to be the core of Ng, and today, I would like to introduce Ng's two core services, $parse and $compile. In fact, these two services speak a lot of people, but 100 readers there are 100 hamlet, I am here to talk about their understanding of the two services.People may doubt, $eval, in fact, he is not a service, he is within the scope of a method, and can not coun
Difference between Angular and jQuery ajax requests, angularjqueryajaxRecently, angular was used in the project and it was found that parameters could not be obtained in the backend. Therefore, we studied the differences between the two when sending ajax. Note that angular and jquery have different ajax requests. In jquery, the official documentation explains tha
1. PrefaceAs the most Popular front-end mv* framework, angular occupies an important position in web development. Next, let's step through the official API and combine the practice process to learn about this powerful framework.Note: The key level of the function is indicated by the ★ after each function description title (the "star").2, function (ON)Angular encapsulates a series of public methods that help
---restore content starts---When angular first entered the front-end developer Vision, one of the indelible impressions was its implementation of two-way data binding. This chapter first describes how to use this feature, and then explains in depth how its two-way binding mechanism is implemented.Data-binding in angular refers to the automatic synchronization between the model models and view views.
Angular JS is very good very powerful, but note that angular JS is not suitable for the operation of the DOM, although after a version of the update, angular built-in jqlite to facilitate the operation of the DOM, the intention to replace the location of jquery, it is very ulterior motives.In fact, angular the best pla
); //handleroomjoining (socket); //handleclientdisconnection (socket, nicknames, namesused); });};Third, use angular to build chat room clientWhy use angular?As a front-end MVC framework, angular.js is undoubtedly compelling. Modular, bidirectional data binding, instruction system, dependency injection. and angular built-in jquerylite, which make
Recently in learning to use angular, slowly from the jquery UI transformation to use NG development, found a lot of different points, continue to learn it;First create a service to reference in the controller in the project, the service has several forms of existence, factory (), service (); constant (); value ();p Rovider (); provider is the most basic, Other services are based on this write, the specific difference here will not unfold, we can look
an interface to dynamically change the location of snowflakes, that is, the coordinate values of the x, Y, which dynamically change snowflakes.Calculates the left-right (x-direction) floating effect in the Snowflake drop process (y-coordinate) based on trigonometric functionspublic void Moveflake (){POSITION.Y + = speed;position.x = driftposition + math.cos (driftangle) * driftrange;Rotateflake.angle + = Spin;if (Position.y > Appheight){POSITION.Y =-this. Height;}Canvas.setleft (this, position.
$http ServicesThe angular built-in $http service simply encapsulates the native XMLHttpRequest object of the browser and can communicate directly with the outside.The $http service can accept only one parameter, which is an object that mainly contains the configuration content of some HTTP requests. Such as: var req = {method: ' POST ' ' Content-typ E ': ' application/x-www-form-urlencoded ' ' Test ' You can see that the $http () method returns a
. $http. Head (URL string, config Optional configuration-object type) returns the Httppromise object4, $http. Jsonp (url string, config Optional configuration-object type) return Httppromise object5. $http. Post (URL string, data object or String, config optional configuration-object type) returns the Httppromise object6. $http. Put (URL string, data object or String, config optional configuration-object type) returns the Httppromise objectSubmitting data data with
Use angular resource to load the JSON data in the Prioritydata.json and draw a doughnut chart with D3. Run index.html results:The JSON data in Prioritydata.json is as follows:{"Priority ": { "blocker": " Critical":, "Major": 5, "Minor": +, " Trivial": $}}The index.html code is as follows:D3 Tagged donut chart example using angular directive and JSON data
There have been a lot of problems with the recent use of the Select command in angular, which is depressing. After looking at a lot of data, it was not easy to find the Select command, and decided to summarize.
Select usage:
Attribute Description:
Discovery and no Ng-change attribute
Ng-required: When the property value is true, add required validation to select, False when not validated.
Ng-options: Specifies the data source to g
Recently in learning to use angular, slowly from the jquery UI transformation to use NG development, found a lot of different points, continue to learn it;
First create a service to be referenced in the controller in the project, there are several existing forms of Service, factory (), services (), constant (), value ();p rovider (), where provider is the most basic, Other services are based on this write, the specific difference here will not unfold
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