Component

https://docs.angularjs.org/guide/component

component本质上就是directive。

This is a shorthand for registering a special type of directive, which represents a self-contained UI component in your application. Such components are always isolated (i.e. scope: {}) and are always restricted to elements (i.e. restrict: 'E').

Component definitions are very simple and do not require as much configuration as defining general directives. Component definitions usually consist only of a template and a controller backing it.

MVC的本质就是将controller和template关联起来,controller将数据显示到template中。component将这种关联做的更好。

When not to use Components:

  1. for directives that need to perform actions in compile and pre-link functions, because they aren't available
  2. when you need advanced directive definition options like priority, terminal, multi-element
  3. when you want a directive that is triggered by an attribute or CSS class, rather than an element

component解决了什么问题:

  1. app中的某个部分如何重用
  2. app中各部分之间的scope不是隔离的
  3. component可以自由的重复使用
  4. index.html被简化了,细节的实现都分离出来了,提高了可维护性
  5. component是隔离的,不受外界影响,同时也不会影响app中的其他部分
  6. 可以独立的测试我们的component

Comparison between Directive definition and Component definition

component使用

  1. 文件名建议:xxxComponent.component.js
  2. component名字规则和directive一样,定义的时候使用驼峰样式(myAwesomeComponent),模板中使用的时候使用-分割(my-awesome-component)
  3. template中使用controller的实例$ctrl替代scope来访问数据,这个实例别名可以自定义 - 使用controllerAs属性
  4. controller可以使用controller()注册的controller,也可以使用行内定义的方式
<html ng-app="phonecatApp">
<head>
...
<script src="bower_components/angular/angular.js"></script>
<script src="app.js"></script>
<script src="phone-list.component.js"></script>
</head>
<body> <!-- Use a custom component to render a list of phones -->
<phone-list></phone-list> </body>
</html>
// Define the `phonecatApp` module
angular.module('phonecatApp', []); // Register `phoneList` component, along with its associated controller and template
angular.
module('phonecatApp').
component('phoneList', {
template:
'<ul>' +
'<li ng-repeat="phone in $ctrl.phones">' +
'<span>{{phone.name}}</span>' +
'<p>{{phone.snippet}}</p>' +
'</li>' +
'</ul>',
controller: function PhoneListController() {
this.phones = [
{
name: 'Nexus S',
snippet: 'Fast just got faster with Nexus S.'
}, {
name: 'Motorola XOOM™ with Wi-Fi',
snippet: 'The Next, Next Generation tablet.'
}, {
name: 'MOTOROLA XOOM™',
snippet: 'The Next, Next Generation tablet.'
}
];
},
controllerAs: 'ctrl'
});

example

var myMod = angular.module(...);
myMod.component('myComp', {
template: '<div>My name is {{$ctrl.name}}</div>',
controller: function() {
this.name = 'shahar';
}
}); myMod.component('myComp', {
template: '<div>My name is {{$ctrl.name}}</div>',
bindings: {name: '@'}
}); myMod.component('myComp', {
templateUrl: 'views/my-comp.html',
controller: 'MyCtrl',
controllerAs: 'ctrl',
bindings: {name: '@'}
});

API

component(name, options) returns ng.$compileProvider

https://docs.angularjs.org/api/ng/service/$compile#directive-definition-object

bindings

这个就是类似于directive中的scope属性, 支持:

  1. @ 字符值 - input
  2. < 单向绑定 - input
  3. & 回调传递 - 父组件的方法,用于向上的交互 - output
  4. = 双向绑定 - 设计原则中不推荐使用
angular.module('docsIsolateScopeDirective', [])
.controller('Controller', ['$scope', function($scope) {
$scope.naomi = { name: 'Naomi', address: '1600 Amphitheatre' };
$scope.igor = { name: 'Igor', address: '123 Somewhere' };
}])
.directive('myCustomer', function() {
return {
restrict: 'E',
scope: {
customerInfo: '=info'
},
templateUrl: 'my-customer-iso.html'
};
});
    .component('qqtrMenu',{
templateUrl:'/secu/components/menu/menu.component.html',
bindings: {
menuitems: "<"
},
controller: 'menuCompCtrl',
})

交互式组件实例

https://plnkr.co/edit/?p=preview

index.html

<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Example - example-component-tabs-pane-production</title> <script src="//code.angularjs.org/snapshot/angular.min.js"></script>
<script src="script.js"></script> </head>
<body ng-app="docsTabsExample">
<my-tabs>
<my-pane title="Hello">
<h4>Hello</h4>
<p>Lorem ipsum dolor sit amet</p>
</my-pane>
<my-pane title="World">
<h4>World</h4>
<em>Mauris elementum elementum enim at suscipit.</em>
<p><a href ng-click="i = i + 1">counter: {{i || 0}}</a></p>
</my-pane>
</my-tabs>
</body>
</html> <!--
Copyright 2017 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
-->

script.js

(function(angular) {
'use strict';
angular.module('docsTabsExample', [])
.component('myTabs', {
transclude: true,
controller: function MyTabsController() {
var panes = this.panes = [];
this.select = function(pane) {
angular.forEach(panes, function(pane) {
pane.selected = false;
});
pane.selected = true;
};
this.addPane = function(pane) {
if (panes.length === 0) {
this.select(pane);
}
panes.push(pane);
};
},
templateUrl: 'my-tabs.html'
})
.component('myPane', {
transclude: true,
require: {
tabsCtrl: '^myTabs'
},
bindings: {
title: '@'
},
controller: function() {
this.$onInit = function() {
this.tabsCtrl.addPane(this);
console.log(this);
};
},
templateUrl: 'my-pane.html'
});
})(window.angular); /*
Copyright 2017 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/

my-pane.html

<div class="tab-pane" ng-show="$ctrl.selected" ng-transclude></div>

<!--
Copyright 2017 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
-->

my-tabs.html

<div class="tabbable">
<ul class="nav nav-tabs">
<li ng-repeat="pane in $ctrl.panes" ng-class="{active:pane.selected}">
<a href="" ng-click="$ctrl.select(pane)">{{pane.title}}</a>
</li>
</ul>
<div class="tab-content" ng-transclude></div>
</div> <!--
Copyright 2017 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
-->

基于组件的开发

https://docs.angularjs.org/guide/component

一个应用应该是一个组件数,每个组件只控制自己的视图和数据. bindings只用字符和单向绑定,数据单向流入; 使用&绑定父组件的方法,实现向上交互

推荐和参考:

https://docs.angularjs.org/tutorial/step_03

https://docs.angularjs.org/api/ng/provider/$compileProvider#component

In order to retrieve and instantiate a component's controller, AngularJS provides the $componentController service.

angularjs component的更多相关文章

  1. 一篇文章看懂angularjs component组件

     壹 ❀ 引 我在 angularjs 一篇文章看懂自定义指令directive 一文中详细介绍了directive基本用法与完整属性介绍.directive是个很神奇的存在,你可以不设置templa ...

  2. angularjs中directive指令与component组件有什么区别?

     壹 ❀ 引 我在前面花了两篇博客分别系统化介绍了angularjs中的directive指令与component组件,当然directive也能实现组件这点毋庸置疑.在了解完两者后,即便我们知道co ...

  3. Using RequireJS in AngularJS Applications

    http://www.sitepoint.com/using-requirejs-AngularJS-applications/ While writing large JavaScript appl ...

  4. 升级 AngularJS 至 Angular

    Victor Savkin 大神撰写了一系列文章详细介绍如何升级 AngularJS 应用: NgUpgrade in Depth Upgrade Shell Two Approaches to Up ...

  5. 了解angularjs中的生命周期钩子函数$onInit,$onChange,$onDestory,$postLink

     壹 ❀ 引 我在前面花了三篇文章用于介绍angularjs的指令directive,组件component,并专门花了一篇文章介绍directive与component的不同,其中提到在compon ...

  6. angularjs 一篇文章看懂自定义指令directive

     壹 ❀ 引 在angularjs开发中,指令的使用是无处无在的,我们习惯使用指令来拓展HTML:那么如何理解指令呢,你可以把它理解成在DOM元素上运行的函数,它可以帮助我们拓展DOM元素的功能.比如 ...

  7. angular directive 深入理解

    由于业务的需要,最近angular 的diretive 研究的比较多,有和同事一起共同协作开发scada的项目, 对directive 有了进一步更深的理解. 感觉才开始真正理解了这句话的意思: In ...

  8. angularjs directive and component 指令与组件 ( 1.5.0 以后 )

    之前写过一篇了 http://www.cnblogs.com/keatkeat/p/3903673.html 但某些部分写的不太清楚,甚至有点错误,所以今天特地在这里再来谈谈. 这篇主要是说指令的隔离 ...

  9. AngularJs学习笔记--Understanding the Model Component

    原版地址:http://docs.angularjs.org/guide/dev_guide.mvc.understanding_model 在angular文档讨论的上下文中,术语“model”可以 ...

随机推荐

  1. Winfrom固定Label宽度,根据文本动态改变Label的高度 z

    Label,要固定住宽度,然后根据文本的长度来动态改变高度,一开始去网上找解决方案,各种根据字体大小啊,字数啊来动态改变,但是效果却不怎么好.最后灵机一动,想起了偶尔用过一次的FlowLayoutPa ...

  2. 如何生成安全的密码 Hash:MD5, SHA, PBKDF2, BCrypt 示例

    密码 Hash 值的产生是将用户所提供的密码通过使用一定的算法计算后得到的加密字符序列.在 Java 中提供很多被证明能有效保证密码安全的 Hash 算法实现,我将在这篇文章中讨论其中的部分算法. 需 ...

  3. Android Lint简介

    Android Lint是SDK Tools 16 (ADT 16)之后才引入的工具,通过它对Android工程源代码进行扫描和检查,可发现潜在的问题,以便程序员及早修正这个问题.Android Li ...

  4. [Android Pro] AndroidStudio IDE界面插件开发(进阶篇之Action机制)

    转载请注明出处:[huachao1001的专栏:http://blog.csdn.net/huachao1001/article/details/53883500] 从上一篇<AndroidSt ...

  5. JUnit4单元测试入门教程

    本文按以下顺序讲解JUnit4的使用 下载jar包 单元测试初体验 自动生成测试类 执行顺序 @Test的属性 下载jar包## 下载地址 在github上,把以下两个jar包都下载下来.     下 ...

  6. Spring Data JPA 实现多表关联查询

    本文地址:https://liuyanzhao.com/6978.html 最近抽出时间来做博客,数据库操作使用的是 JPA,相对比 Mybatis 而言,JPA 单表操作非常方便,增删改查都已经写好 ...

  7. go语言之进阶篇定时器Timer的使用

    1.Timer的使用 示例: #创建一个定时器,设置时间为2s,2s后,往time通道写内容(当前时间) package main import ( "fmt" "tim ...

  8. go语言之进阶篇空接口

    1.空接口 示例: package main import "fmt" func xxx(arg ...interface{}) { } func main() { //空接口万能 ...

  9. Threejs 开发3D地图实践总结【转】

    Threejs 开发3D地图实践总结   前段时间连续上了一个月班,加班加点完成了一个3D攻坚项目.也算是由传统web转型到webgl图形学开发中,坑不少,做了一下总结分享. 1.法向量问题 法线是垂 ...

  10. WPF中使用流文档

    转载自:http://www.cnblogs.com/zlgcool/archive/2008/11/17/1335456.html WPF面向的是UI展现,而文本显示无疑是UI层中的重要功能之一.W ...