Angular allows us to conveniently use the async pipe to automatically register to RxJS observables and render the result into the template once the request succeeds. This has some drawbacks, especially if we want to bind the same data in multiple par…
原文:https://coryrylan.com/blog/angular-multiple-http-requests-with-rxjs --------------------------------------------------------------- Cory Rylan Nov 15, 2016 Updated Feb 25, 2018 - 5 min readangular rxjs This article has been updated to the latest v…
angular.bind 返回一个调用self的函数fn(self代表fn里的this).可以给fn提供参数args(*).这个功能也被称为局部操作,以区别功能. 格式:angular.bind(self,fn,args); self:object  对象: fn的上下文对象,在fn中可以用this调用 fn:function: 绑定的方法 args:传入fn的参数 使用代码: var obj = { name: "Any" }; var fn = function (Adj) { c…
angular.bind bind 函数有三个参数, 参一:是一个对象 参二:是一个 function 参三:是用来给参二传参数的,可写可不写,看你心情 参数也可以在调用函数的时候传,也可以当做第三个参数传 在函数的体内可以访问参数一的所有属性值 <!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document<…
angular.bind :Returns a function which calls function fn bound to self (self becomes the this for fn). You can supply optional args that are prebound to the function. This feature is also known as partial application, as distinguished from function c…
angular.bind 返回一个调用self的函数fn(self代表fn里的this).可以给fn提供参数args(*).这个功能也被称为局部操作,以区别功能. 格式:angular.bind(self,fn,args); self:object  对象: fn的上下文对象,在fn中可以用this调用 fn:function: 绑定的方法 args:传入fn的参数 使用代码: var obj = { name: "Any" }; var fn = function (Adj) { c…
描述: 上下文,函数以及参数动态绑定,返回值为绑定之后的函数. 其中args是可选的动态参数,self在fn中使用this调用. 使用方法: angular.bind(self,fn,args ); 参数: 参数名称 参数类型 描述 self Object fn的上下文对象,使用this调用 fn function 被绑定的function args * 传入fn中的参数(可选的) 返回值:返回动态绑定之后的函数: 实例: <!DOCTYPE html> <html xmlns=&quo…
When migrating AngularJS (v1.x) applications to Angular you have different options. Using Angular Elements is one of them. In this lesson we learn how to integrate an Angular Element into an AngularJS (v1.x) application. We will leverage some feature…
前言 今天是进入公司的第三天,为了能尽快投入项目与成为团队可用的战力,我正在努力啃官方文档学习 Angular 的知识,所以这一篇文章主要是记录我如何阅读官方文档后,实现这个非常基本的.带导航的网页应用. 需求 需求大概是这样的: 开一个新的 Angular 项目,并且一开始选择加入 Router 功能 根组件是 AppComponent ,然后下方有三个子组件分别是 page1 page2 page3 可以在 AppComponent 内点击连结切换到这三个页面 参考文档: 路由与导航 Rou…
Using the Angular 2 router requires defining routes, passing them in to the RouterModule.forRoot and then importing the configured RouterModule into your main App Module. Use the Wiki Search as example project. Create a HomeComponent to contain every…
目录 一. 漫谈Angular 二. 如果你还在使用Angularjs 三. 我计划这样学习Angular技术栈 一. 漫谈Angular Angular,来自Google的前端SPA框架,与React,Vue并称前端框架的三驾马车,前些日子刚发布了7.0版本.它是一个十足的革命者,每一次亮相,都会把新的思想和软件层面的实现提供给开发者,从Angularjs1.0时代推翻jQuery的统治地位,到Angular2.0时代基于Typescript的全面升级,再到现在每半年一个大版本的高速更新迭代,…
一.Overview angular 入坑记录的笔记第一篇,完成开发环境的搭建,以及如何通过 angular cli 来创建第一个 angular 应用.入坑一个多星期,通过学习官方文档以及手摸手的按教程敲官方的快速上手项目,很像后端,嗯,完美的契合了我这种后端开发人员. 对应官方文档地址: 搭建本地开发环境和工作空间 ng new ng serve 工作区和项目文件结构 配套代码地址:angular-practice/src/getting-started 二.Contents Angular…
如果你不知道什么是Angular或者根本没听说过,那么我接下来所说的对你来说毫无益处,不过如果你打算以后会接触Angular或者干脆要涨涨姿势~读下去还是有点用的. Angular和它之前所出现的其余前端框架最大的不同,在于它的核心不再是DOM,而是数据,是model.我们惯用的不管是单纯的jQuery还是MVC的Backbone,它们本质仍是让我们更方便更有条理的操作DOM,但是Angular不是.通过一系列魔术般的手法,它将一切的重心转移到数据上.以开发应用而不是操作节点的方式去开发Web,…
var async = require('async'); // series 串形任务 console.time('cost') async.series({ two:function(callback){ setTimeout(function(){ console.log('串形任务two'); //第一个参数 错误原因,当为真时,接收函数err参数接收到原因,并定为报错,停止执行后边的任务 callback(null,'串形任务two 执行完毕'); },) }, one:functio…
String Template(字符串模板)在很多编程语言和框架中都支持,是一个很有用的特性.本文将Jerry工作中使用到的String Template的特性做一个总结. ES6 阮一峰老师有一个专门的网站介绍ES6入门,还出了一本书: <ECMAScript6标准入门>. http://es6.ruanyifeng.com/ 我们来看看ES6里的String Template. 首先看下面这段代码. <html> <div id="JerryTest"…
Being able to intercept HTTP requests is crucial in a real world application. Whether it is for error handling and logging or for injecting authentication tokens. While in Angular version 2 it intercepting HTTP requests was totally possible, implemen…
Angular 2 templates have a special let syntax that allows you to define and pass a context when they’re being generated. We have template: <template #template let-description="description"> <h2>My {{description}} template</h2>…
In a proper unit test we want to isolate external dependencies as much as possible to guarantee a reliable test outcome. Http calls represent such external dependencies. Therefore, when testing our Angular components or services that rely on data ret…
Showing you how you can expose properties on your Controller to access them using #refs inside of your template. // letterSelect.ts import {Component, View, FORM_DIRECTIVES, NgFor} from 'angular2/angular2'; @Component({ selector: 'letter-select' }) @…
The network may be unreliable and loading data may take time. Thus it is important to give the user some feedback about what's going on as fast as possible. In this lesson we learn how to leverage the else block of the *ngIf directive to show a simpl…
When you create a Form in Angular 2, you can easily get all the values from the Form using ControlGroup and Controls. Bind [ng-form-model] to the <form> form bind to ControlGoup Bind [ng-form-control] to the <input> input bind to Gontrol impor…
You can place content inside of the instance of your component element then manage it inside of the component’s template using ng-content. This process is called reprojection, but you may be more familiar with the term “transclusion”. Home: <div>I a…
angularJS的源代码整体上来说是一个自执行函数,在angularJS加载完成后,就会自动执行了. angular源代码中: angular = window.angular || (window.angular = {}) 定义一个全局的angular空对象. 然后: bindJQuery(); //绑定jQuery publishExternalAPI(angular); //扩展angular对象的方法和属性 jqLite(document).ready(function() { an…
今天做了一些图来说明angular,由于angular实在太复杂了,不知道用什么图表示比较好,所以就胡乱画了一些,希望有人能看得懂. 一.源码文件编译合并顺序图 二.angular.module函数功能图 三.publishExternalAPI函数功能图 四.注入器工厂函数createInjector内部的providerCache和instanceCache 上一期:angular源码分析:angular的整个加载流程 下期预告:angular源码分析:angular中$rootscope的…
Services are used to share data between components. They follow a module pattern that allows you to use the data throughout your application so that your data is consistent and in sync. Create a service.module.ts: import { NgModule} from '@angular/co…
In this lesson we will learn several ways to debug an Angular 2 application, including by using Augury and the console. This is especially useful in situations (typically in enterprise development) where we are not administrators on our machine and d…
Angular cli 运行 build后打开生成的index.html报错:In this configuration Angular requires Zone.js 生成代码如下: ng build --port 错误: Error: In this configuration Angular requires Zone.js 解决方法:(缺少zone.js包的引用,增加zone.js包的依赖就好了) npm install --save zone.js…
1.disable : true ,禁用 2.$timeout 计时器 $interval.cancel(timer); 3.app.run();  可以不使用控制器就开启数据,但适合$rootscope; app.run(['rootScope',function($rootScope){ }]) 4.angular 里 字符串与对象互转 angular.toJson();将字符串转成对象 angular.forJson(); 将字符串转成对象 5.监听 $scope.$watch('要监听的…
问: During the Techdays here in the Netherlands Steve Sanderson gave a presentation about C#5, ASP.NET MVC 4, and asynchronous Web. He explained that when requests take a long time to finish, all the threads from the threadpool become busy and new req…
If we’re going to make our toggle accessible, we’ll need to apply certain aria attributes to the control that does the toggling. Instead of making the parent component handle that, we can provide a toggler directive that automatically applies the nee…