[Angular] Export directive functionalities by using 'exportAs'

Directive ables to change component behaives and lookings. Directive can also export some APIs which enable behaivor changes control by outside directive iteslf. For example, we have an tooltip: It is a directive: import { Input, Directive, ElementRe…

[Angular 2] Directive intro and exportAs

First, What is directive, what is the difference between component and directive. For my understanding, component is something like 'canvas', 'form', 'table'... they have the template and their own functionality. It defines how a html tag should work…

[Angular] Custom directive Form validator

Create a directive to check no special characters allowed: import {Directive, forwardRef} from '@angular/core'; import {AbstractControl, NG_VALIDATORS, Validator} from '@angular/forms'; @Directive({ selector: `[formControl][no-special-chars], [formCo…

[Angular] Test Directive

directive: import { Directive, HostListener, HostBinding, ElementRef } from '@angular/core'; @Directive({ selector: '[credit-card]' }) export class CreditCardDirective { @HostBinding('style.border') border: string; @HostListener('input', ['$event'])…

[Angular] Using directive to create a simple Credit card validator

We will use 'HostListener' and 'HostBinding' to accomplish the task. The HTML: <label> Credit Card Number <input name="credit-card" type="text" credit-card placeholder="Enter your 16-digit card number"> </label…

关于angular 自定义directive

关于angular 自定义directive的小结首先我们创建一个名为"expander"的自定义directive指令: angular.module("myApp",[]).directive("expander",function(){ return{ //directive的一些属性(键值对形式)如下: /* restrict:'EA', replace:true, transclude:true, scope:{...}, templ…

angular service/directive

<html class=" js cssanimations csstransitions" ng-app="phonecatApp" > <head> <title>{{title}}</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name=&…

一个Demo就懂的Angular之directive

<body> <div ng-controller="myCtrl"> <hello-word></hello-word> </div> <script type="text/javascript"> angular.module('app',[]) .directive('hello-word',function($document){ return { /*** 'E':<hello-…

angular 中 directive中的多个指令

<div ng-controller="ctrl1"> <superman weight length speed>superman</superman> <superman weight >weight</superman> </div> <script type="text/javascript"> angular.module('myMoudle',[]) .controlle…

Angular中directive——scope选项与绑定策略，这个也经常迷惑的。

开门见山地说,scope:{}使指令与外界隔离开来,使其模板(template)处于non-inheriting(无继承)的状态,当然除非你在其中使用了transclude嵌入,这点之后的笔记会再详细记录的.但是这显然不符合实际开发中的需求,因为实际上,我们经常想要我们的指令能够在特定的情况下与外界进行数据上的交互,这就需要借助绑定策略之手了. 大家知道,当scope选项写为scope:{}这种形式的时候,就已经为指令生成了隔离作用域,现在,我们来看看绑定策略的三种形式:& .= .@. 首先是…

angular的directive笔记

原贴地址 1,tansclude: 是指令能够能够把外部定义的内容传回指令模板内部(通过在内部标签使用ng-transclude).这个外部指定的内容是根据外部的作用域控制的,跟指令的作用域无关.这个跟指令的模版解析是不一样的,指令模板解析的思路是模板-指令定义作用域名-外部作用域或者模板-指令定义作用域名-元素属性-外部作用域.当想要把任意内容引入到指令中时就需要开启这个功能. 2, '&'绑定: &绑定使我们可以在指令的作用中调用传递的函数,但是运行在注册时候定义的作用域上下文.绑定的…

angular的directive指令的link方法

比如指令标签 <mylink myLoad="try()"></mylink> link:function(scope,element,attr){ element.bind("mouseenter",function(){ //attr.myload() 就是获取标签上的方法注意这里需要小写,不能大写 element.$apply(attr.myload()); //使用$apply运行作用域里面的try()方法 scope.$appl…

[Angular Directive] Assign a Structual Directive a Dynamic Context in Angular 2

Just like passing in an array to *ngFor, you can pass in any value into your structural directive so that it can render templates based on those values. It's crucial to understand how the *directive syntax expands into a <template> and adds a custo…

[Angular Directive] Implement Structural Directive Data Binding with Context in Angular

Just like in *ngFor, you're able to pass in data into your own structural directives. This is done by declaring the variable using a let statement then passing context into the createEmbeddedView call. We know *ngFor we did like this: *ngFor="let mes…

angular之自定义 directive

1,指令的创建至少需要一个带有@Directive装饰器修饰的控制器类.@Directive装饰器指定了一个选择器名称,用于指出与此指令相关联的属性的名字. 2,创建一个highlight.directive.ts文件可以用命令 ng g directive highlight;内容如下这里是做一个给元素加色彩的一个指令. import { Directive, ElementRef, Renderer } from '@angular/core'; @Directive({ selecto…

[Angular] Step-By-Step Implementation of a Structural Directive - Learn ViewContainerRef

For example we have two buttons: When we click nether one of those tow button, the modal should show up: We will use structure directive to do that. So create a new directive 'auModalOpenOnClick': import {Directive, TemplateRef, ViewContainerRef} fro…

[Angular] @ContentChild with Directive ref

For example you have a component, which take a trasclude input element: <au-fa-input id="password-field" icon="lock" > <input placeholder="Password" class="test-class"> </au-fa-input> There is many…

[Angular Directive] Write a Structural Directive in Angular 2

Structural directives enable you to use an element as a template for creating additional elements. Creating structural directives requires a knowledge of <template> elements, but they're easy and extremely powerful once you undrestand the concepts.…

[Angular Directive] 3. Handle Events with Angular 2 Directives

A @Directive can also listen to events on their host element using @HostListener. This allows you to add behaviors that react to user input and update or modify properties on the element without having to create a custom component. import {Directive,…

[Angular Directive] 2. Add Inputs to Angular 2 Directives

The @Input decorator allows you to pass values into your @Directive so that you can change the value of the Directive each time that it is used. Using @Input makes your Directives much more flexible and reusable so they can adapt to many different si…

[Angular Directive] 1. Write an Angular Directive

Angular 2 Directives allow you manipulate elements by adding custom behaviors through attributes. This lesson covers how to create a Directive and attach its behavior to an element. import {Directive, HostBinding} from '@angular/core'; @Directive({ s…