components

How to test changes on Component Bindings by parent element?

由 倖福魔咒の 提交于 2019-12-08 19:38:09
问题 I have a component like follows and would like to test what the $onChange method does in case the binding myBinding changes. I tried the whole morning, but could not find a way to solve this. angular .module('project.myComponent', []) .component('myComponent', { bindings: { myBinding: '<' }, template: '<div>{{$ctrl.result}}</div>', controller: myComponentController }); function myComponentController($filter, someService) { var ctrl = this; ctrl.result = 0; $ctrl.$onChange = function (changes)

React defining state without a constructor [duplicate]

由 醉酒当歌 提交于 2019-12-08 19:20:54
问题 This question already has answers here : init state without constructor in react (3 answers) Closed 2 years ago . I've seen some react developers define state without a constructor. I like the fact that is simplifies the code, but is it safe to do so? class Dog extends React.Component { state = { sound: 'Woof' } return ( <p>Dog says { this.state.sound }</p> ) } I apologize in advance for the over simplified example. 回答1: Its exactly the same thing. Take a look at the javascript that babel

VueJS - Object Props validation

由 夙愿已清 提交于 2019-12-08 16:35:48
问题 In VueJS, how can I validate Object type props in order to ensure that the object has some specific fields defined? For example, i want to ensure that the user prop will have the fields 'name', 'birthDate', and so on. Thanks in advance. 回答1: You can create a custom validator function for objects: https://vuejs.org/v2/guide/components.html#Prop-Validation props: { propF: { validator: function (value) { return value > 10 } } } Function should return true if all fields are present. Example:

Loading second component causes “The template specified for component SidebarComponent is not a string”

由 给你一囗甜甜゛ 提交于 2019-12-08 15:13:23
问题 I have just started learning angular and i tried to create a simple dashboard. I've created 2 componentents, DashboardComponent and SidebarComponent. Dashboard loads fine, but when i load SidebarComponent i'm getting a error on browser "The template specified for component SidebarComponent is not a string" SidebarComponent: import { Component } from '@angular/core'; @Component({ selector: 'sidebar-component', templateUrl: './sidebar.component.ts', styleUrls: ['./sidebar.component.scss'] })

Problem using Flash Components in multiple SWC files

由 和自甴很熟 提交于 2019-12-08 14:01:27
[Edit: Short version - how do you properly handle namespace collisions in SWC files if one SWC has fewer classes from that namespace than another?] I have a rather large Flash application which I'm building in Flash Builder (because coding/debugging in the Flash IDE is... not good) and I've got a ton of external SWC files which I'm linking in to my application. This has worked well so far - the file size is on the large side, but it's a lot simpler than loading in SWFs, especially since I am extending most of the classes in each SWC and adding custom code that way (it's a very design-heavy app

React Native - Trouble passing parent's state to child

由 被刻印的时光 ゝ 提交于 2019-12-08 11:58:53
问题 a React newbie having some issues passing down states and functions from Parent Component ( App in this case) and accessing from Child Components ( Main in this case). I'm sure it's one or two really simple mistakes, where am I getting tripped up? Here is the project structure: App |__ Rootstack | |__Favorites |__Main And here is the stripped down code: class Main extends React.Component { render() { return ( <View> <Text>{this.props.favoritesList.length}</Text> <Card> onSwiped={() => {this

How to share service data between components correctly in Angular 2

由 回眸只為那壹抹淺笑 提交于 2019-12-08 08:55:44
问题 I want to create a service to get data from .json file once and share it to multiple subscribers. But now with my solution number of requests to get data from .json file equals to a number of a subscibers for my service. getconfig.service.ts import {Injectable} from 'angular2/core'; import {Http, Response} from "angular2/http"; @Injectable() export class ConfigService { config: any; http: Http; constructor(http: Http) { this.http = http; console.log('Inside service'); this.config = this.http

Is it possible to export already installed component in joomla 2.5?

由 邮差的信 提交于 2019-12-08 08:12:03
问题 I want to export a component that already installed in Joomla2.5 site. I've searched in google, and joomla forums, but not able to to find a relevent solution. Anyone knows how to export an installed component from joomla admin side? 回答1: You can manually export by going to /components folder using ftp and copy component that you want to export. Admin component folder is administrator/components. And zip that folder. 来源： https://stackoverflow.com/questions/11239434/is-it-possible-to-export

Accessing container fields

由 六眼飞鱼酱① 提交于 2019-12-08 07:33:12
问题 I've got a very silly question to ask. I'm using NetBeans to built a small app and I'm having the following problem; My main class is called mainApp and is extending a JFrame which in turn contains a JPanel called drawingBoard which I also extend for various (and off-topic) reasons.. The core problem is that at some point I need to access one of the fields of the mainApp but due to the way NetBeans instantiates my main class..(as anonymous class) I can't get a reference to the container(that

vue js cant understand keep alive

由 北城以北 提交于 2019-12-08 06:46:33
问题 I'm doing tests with this code: https://jsfiddle.net/b2qj69o1/25/ <button v-for="tab in tabs" v-bind:key="tab.name" v-bind:class="['tab-button', { active: currentTab.name === tab.name }]" v-on:click="currentTab = tab" >{{ tab.name }}</button> <component v-bind:is="currentTab.component" class="tab" ></component> And the js part var tabs = [ { name: 'Home', component: function() { alert(); // test return new Promise((resolve, reject) => resolve({ template: '<div>Home component</div>' })) } }, {
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