ngif angular2

attribute is bound to a TemplateRef object, an embedded view if (this. ngTemplateOutlet) {this. _ viewRef = this. _ viewContainerRef. createEmbeddedView (this. ngTemplateOutlet, this. ngTemplateOutletContext );}}} ngTemplateOutlet The command source code is relatively simple. If you are interestedcreateEmbeddedView() For more information about the internal implementation of the method, see Angular 4.x NgIf. Note thatlet Syntax to create template loca

AngularJs provides a detailed explanation of some of the commands and angularjs We often use commands when using ng. I will not introduce the attributes that are well known to you here. I will explain the attributes that you did not pay attention. 1. multiElement This function is used to specify the interval of a command. The most common functions are ng-repeat-start and ng-repeat-end. 2. priority Command priority. The higher the priority, the earlier the command is executed. 3. terminal Whether

small functions into pages and load them as needed. The template loading function is used here. Therefore, the code on the navigation page is very clean. If you want to use the functional code, you can directly use the corresponding html page and js script file, which is convenient and fast. The Code on the navigation page is as follows: Most of the above Code comes from the official homepage code. Because Angularjs is used, corresponding attributes are added, including ngApp, ngController, ng

--conf conf--conf-file/usr/cstor/flume/conf/test.conf--name Agent1-dflume.root.logger=debug, Console　　　　　　!!! >> Running this command sometimes comes with a permissions issue that requires a command chmod o+x flume-ngIf normal operation, the most regret display started,Three collection logs1 ' After successful start, you need to manually generate the message source is the/home/source.log in the configuration file , use the following command to write

After the last one, a simple method of GetByID, the most commonly used is the method.Directly on the code:getbyId (id:string) { This. Myhttp.get (' http://192.168.2.139:9002/api/patients/' +ID). Subscribe (Data= { This. mypatient =NewPatient ({id:data[' Patientid '], firstname:data[' Details ']. FirstName, lastname:data[' Details ']. LastName, middlename:data[' Details ']. MiddleName, birthdate:data[' Details ']. BirthDate, gender:data[' Details ']. Gender, phonenumber:data[' Personalinf

problems in the learning process! The fun of Angularjs One of my favorite angular is how it breaks down into concepts with a clear purpose. Two of these concepts--directives and Services are widely used in smarty. Directive and Dom are bound together to manage interactions with elements, and service provides independent reusable logic for controller and directive through dependency injection. Angular offers a lot of built-in directive and service, and we've used many of them in this project.

loading feature. So, the navigation page code on the display is very clean, if you want to use which part of the function code, directly using the corresponding HTML page and JS script file can be convenient and fast. The following is the code for the Navigation page: Most of the above code comes from the official home page code, because to use ANGULARJS, so added the corresponding properties, including ngapp,ngcontroller,ngclick,ngif and d

When we use NG, we often use the instructions, the well-known attributes I'm not going to introduce here, tell us about the attributes that we don't pay attention to. 1.multiElement This is the function that specifies the function range of the instruction, the most commonly used is Ng-repeat-start and ng-repeat-end. 2.priority Instruction priority, the higher the priority, the earlier the instruction executes. 3.terminal Whether an instruction with a lower priority is allowed to work, and

{ background:red; } . Highlight.on { background:yellow; } . highlight.on-remove { background:blue; }:1.5.8 supported instruction and animation styles: Directive Supported animations {@link ng.directive:ngrepeat#animations Ngrepeat} Enter, leave and move {@link ngroute.directive:ngview#animations Ngview} Enter and leave

Post it first: Original GIF image: Image after adding a text watermark Herosoft is the added watermark. Handling ideas: Obtain each GIF image and add it as a watermark to obtain the delay time of each GIF image. Generate a custom frame object. After processing each frame, add the GIF parameter information to these images through the program and generate a new GIF file, currently, the ngif library is used to generate GIF files, which is very slow. Lo

$compileprovider service provider named $compile directive ({A:htmlanchordirectiv E, input:inputdirective, textarea:inputdirective, F Orm:formdirective, Option:optiondirective, Ngbind:ngbinddirective, Ngclass:ngclassdirective, Ngcontroller:ngcontrollerdirective, Ngform:ngformdirective, Nghide:nghidedirective, ngif : Ngifdirective, Nginit:nginitdirective, Ngrepeat:ng

Ng-if is false, the corresponding element will be removed from the DOM, otherwise a clone of the corresponding element will be reinserted into the DOM.The most essential difference between ng-if and no-show and ng-hide directives is that it does not show or hide DOM nodes through CSS, it is the actual generation or removal of nodes.When an element is removed from the DOM by ng-if, the scope associated with it is also destroyed. And when it is re-added to the DOM, a new scope is generated from i

Use of 1.ngRoute modulesSteps to use:(1) Create index.html, introduce CSS/JS, declare Ngview(2) Create a template page(3) Create the module, configure the routing dictionaryModule.config (function ($routeProvider) {$routeProvider.When ('/start ', {templateurl: ' xxx.html '})})(4) Test: Http://IP/index.html#/startUse of 2.ngAnimate modulesAngular itself does not provide any animation effects, but the Nganimate module provides some "animated hooks" (hooks) that can hook user-defined JS (jquery.ani

listed above. Of course, there are still some questions in the learning process! Fun Of AngularJS What I like most about Angular is how it is broken down into concepts with clear purposes. Smarty is widely used in two concepts: Directives and Services. Directive and DOM are bound together to manage interaction with elements. Services provide independent reusable logic for Controller and Directive through dependency injection. Angular provides many built-in direve VE and services. We have used m

Useng-if The instruction can be completely based on the value of the expression DOM an element is generated or removed from the If you assign a value to ng-ifThe value of the expression isfalse , the corresponding element will be DOM Otherwise, one of the corresponding elements is removed from the Cloning will be re-insertedIntoDOM the. Ng-ifwithno-showand theNg-hideThe most essential difference of instruction is that it is not throughCSSShow or hideDOMnode, andis to actually build or remove th

distinguished from the important characteristics of other frameworks;C, Dependency Injection:Direct invocation by injecting certain services or objects;D, Modular design:The ANGULARJS framework itself conforms to the modular design, using the framework of modules, controllers, services and so on to achieve modular development;③ using:Basic syntax:{{expression}}: Executes the expression in parentheses and outputs the result to innerHTML;Ng-app: Automatically load and start NG applications;Ng-ini

if formErrors. if fields such as email are not blank, the modified content is displayed, that is, the prompt of the validator. onValueChanged(data?: any) { if (!this.commentForm) { return; } const form = this.commentForm; for (const field in this.formErrors) { this.formErrors[field] = ''; const control = form.get(field); if (control control.dirty !control.valid) { const messages = this.validationMessages[field]; for (const key in control.errors) { this.formErrors[field] += messages[key] +

Two four characteristics of Angularjs: two-way data binding(1) Direction one: The model data is bound to the view-then whenever the model has changed, the rendering in view will change immediately! Implementation method:{{}}, Ngbind, Ngrepeat, Ngif, Ngsrc, Ngstyle ... All implement the binding of direction 1.(2) Direction Two: Modify the View (Form control) to bind to the model-at any time thereafter, whenever the data in the view is modified, the dat

= "Exampleinput"placeholder= "Please input the address"name= "Searchaddress"> One Div> A Buttontype= "button"class= "Btn Btn-default"(click)= "Start ()">SearchButton> - form> - Div> the Div> - Divclass= "Data"*ngif= "Begin"> - Tableclass= "Table table-striped"> - thead> + TR> - th>Dateth> + th>Weatherth> A th>Daytime temperatureth> at

parsing template html, the instructions are parsed. The instruction is a class with instruction metadata. The instruction is a class, and it contains instruction source data. In typescript, the metadata is attached to the class by @Directive adorner. As with the metadata of the previous class, the metadata is appended to the following class by the @Component adorner, the programming component class. This is to attach some metadata to the following instruction class by @Directive adorner. S