我们将删除所有不必要的样板代码,因此我们的index.js文件将如下所示: importReactfrom'react';importReactDOMfrom'react-dom';import'./index.css';importAppfrom'./App';ReactDOM.render(<React.StrictMode><App/></React.StrictMode>,document.getElementById('root') ); App.js文件只包含“TODO React Firebas...
// Get the circles from the database in each row let dbCircle = R.clone(circleTemplate); dbRef.doc(doc.data().name).collection("canvas").get() .then((querySnapshot) => { querySnapshot.forEach((bit) => { let i = 8 * bit.data().posY + bit.data().posX; dbCircle[i].pos...
import { auth, handleOnAuthStateChanged } from './common'; document.getElementById('btnSignin').addEventListener('click', async (e) => { e.preventDefault(); try { const form = document.querySelector('form.formLogin'); const email = form.email.value.trim(); const password = form.pass...
//HTML Code to show the messageHelloworld!ThisisHTML5Boilerplate.//Firebase script to get the value from database and replace the "message".varmessageLabel =document.getElementById('message');vardb = firebase.database(); db.ref().on("value",function(snapshot) {console.log(snapshot.val()...
this. return handleUIError(error); }, uiShown: function() { // The widget is rendered. // Hide the loader. document.getElement('loader').style.display = 'none'; } }, credentialHelper: firebaseui.auth.CredentialHelper.NONE // Query parameter name for mode. queryParameterFor...
错误TypeError:无法读取null的属性'querySelectorAll‘,错误TypeError:无法读取null的属性'getElementsByTagName’ TypeError:无法读取null的属性(读取“addEventListener”) 会话:无法读取null的属性“TypeError” TypeError:无法读取null的“opacity”属性 配置:无法读取null的属性‘TypeError’ ...
('Firebase Query List'), ), body: FutureBuilder( future: databaseReference.child('your_collection').once(), builder: (context, snapshot) { if (snapshot.connectionState == ConnectionState.done) { if (snapshot.hasData) { // 将查询结果转换为列表 List<dynamic> dataList = snapshot....
this. return handleUIError(error); }, uiShown: function() { // The widget is rendered. // Hide the loader. document.getElement('loader').style.display = 'none'; } }, credentialHelper: firebaseui.auth.CredentialHelper.NONE // Query parameter name for mode. queryParameterFor...
Get information about a YouTube channel Node (1st gen) This sample shows how to query the Youtube Data API. Uses an HTTPS trigger. We'd love that you contribute to the project. Before doing so please read ourContributor guide. © Google, 2015-2023. Licensed under anApache-2license. ...
It is common to make a detail page that loads a single item instead of a whole list of items. A query for a specificTodoscan be created using importReactfrom'react'importPropTypesfrom'prop-types'import{get}from'lodash'import{useSelector}from'react-redux'import{useFirebaseConnect}from'react-...