2-way-object-databinding

Firebase Countdown Timer Synched Across Multiple Clients

由 佐手、 提交于 2019-11-27 15:33:03
问题 I am going to take a crack at building a penny auction site for a specific niche using angular JS. I am trying to plan the countdown timers and i've been itching for a reason to try out firebase. I had the idea yesterday to have each auction somehow have a countdown in the actual database, because with 2 way data binding, peoples clientside will always stay updated. When the firebase changes, all the connected clients instantly change. So my question is this... How could I do a server side

React input defaultValue doesn't update with state

由 a 夏天 提交于 2019-11-27 03:25:24
I'm trying to create a simple form with react, but facing difficulty having the data properly bind to the defaultValue of the form. The behavior I'm looking for is this: When I open my page, the Text input field should be filled in with the text of my AwayMessage in my database. That is "Sample Text" Ideally I want to have a placeholder in the Text input field if the AwayMessage in my database has no text. However, right now, I'm finding that the Text input field is blank every time I refresh the page. (Though what I type into the input does save properly and persist.) I think this is because

How do I bind a Listview SelectedItem to a Textbox using the TwoWay mode?

由 泄露秘密 提交于 2019-11-27 02:57:25
问题 I am very new to WPF and testing some things that I would like to include in an application that I will be working on. I have a 2 row ListView (bound to a textbox) with the names Scott Guthrie and Jon Skeet in it. I am trying to select "Scott Guthrie" in the ListView and have it populate the TextBox. I want to be able to edit the text and tab off and have the ListView updated. Edit :I removed the code since that really didn't add anything to the question. 回答1: Wow, that's really complicated

React input defaultValue doesn't update with state

由 别说谁变了你拦得住时间么 提交于 2019-11-26 12:24:03
问题 I\'m trying to create a simple form with react, but facing difficulty having the data properly bind to the defaultValue of the form. The behavior I\'m looking for is this: When I open my page, the Text input field should be filled in with the text of my AwayMessage in my database. That is \"Sample Text\" Ideally I want to have a placeholder in the Text input field if the AwayMessage in my database has no text. However, right now, I\'m finding that the Text input field is blank every time I

Angular 2 two way binding using ngModel is not working

由 泪湿孤枕 提交于 2019-11-26 02:54:31
问题 Can\'t bind to \'ngModel\' since it isn\'t a know property of the \'input\' element and there are no matching directives with a corresponding property Note: im using alpha.31 import { Component, View, bootstrap } from \'angular2/angular2\' @Component({ selector: \'data-bind\' }) @View({ template:` <input id=\"name\" type=\"text\" [ng-model]=\"name\" (ng-model)=\"name = $event\" /> {{ name }} ` }) class DataBinding { name: string; constructor(){ this.name = \'Jose\'; } } bootstrap(DataBinding)

angular2: Error: TypeError: Cannot read property &#39;…&#39; of undefined

由 岁酱吖の 提交于 2019-11-25 23:47:02
问题 I have attached the plunker of my angular2 code piece. I want to print a field from my JSON but unable to print that as initially my Object is null and it is being populated via a Promise. This is my component file import {Component, NgModule, OnInit} from \'@angular/core\' import {BrowserModule} from \'@angular/platform-browser\' class MyData { xyz : MySubData; } class MySubData { name : string; } @Component({ selector: \'my-app\', template: ` <div> <h2>Hello {{name}}</h2> {{abc.xyz.name}} <
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