I am running a Vue 3.0 with Quasar library. In the application there is a component that has a child component in it. With vue test utils v 2.2.6, I cannot seem to locate the child components in order to generate events. Why?
Simplified Parent Component
<template>
<q-dialog square persistent transition-show="scale" transition-hide="scale" >
<q-card-section class="q-px-xs q-pt-none">
<ChildComponent/>
</q-card-section>
</q-dialog>
</template>
<script setup>
//imports, props, etc
</script>
<style> ... </style>
Simplified Child Component
<template>
<q-card square bordered id="new-recipient-root-element" class="new-recipient">
<q-form>...</q-form>
</q-card>
</template>
<script setup>
//imports, props, etc
</script>
<style> ... </style>
Using Jest / vue test utils like so:
wrapper = mount(ParentComponent, {
props: { ...},
global: {
plugins: [i18n],
provide: {
store: ...
},
mocks: { ... }
}
});
wrapper.vm.show();
await nextTick();
domWrapper = new DOMWrapper(document.body);
...
await domWrapper.findComponent(ChildComponent).vm.$emit('myEvent');
domWrapper.findComponent(ChildComponent) always returns nothing. If I try domWrapper.findAllComponents(), it returns an empty array.
Also noticed that I can locate all the elements, but if I click on a button, no event seems to be generated since the handlers are not called and wrapper.emitted() contains nothing.
What am I missing?
got this code from preact's site, and try to make it work without babel building process, but failed, anybody knows if this is possible? Thanks,
http://jsfiddle.net/e281k4wz/117/
'use strict';
const { Component, h, render } = window.preact;
render((
<div id="foo">
<span>Hello, world!</span>
<button onClick={ e => alert("hi!") }>Click Me</button>
</div>
), document.body);
Yes. You have to include babel before your jsx code and use the script as type="text/babel" see the following example with react
<!DOCTYPE html>
<html>
<head>
<script src="https://unpkg.com/#babel/standalone/babel.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/babel">
class App extends React.Component {
render() {
return (
<div className="app-content">
<h1>Hello from React</h1>
</div>
)
}
}
ReactDOM.render(<App />, document.getElementById('app'));
</script>
</body>
</html>
You cannot directly use the JSX into the JavaScript as it's a invalid syntax.
For running the preact into the client you have to either transpile the jsx code into valid javascript or use the helper method (Component , h , render) provided by preact.
HTML
<h1>Render by Preact client library using h and render function</h1>
<div id="preact">
</div>
JavaScript
var Component = window.preact.Component,
h = window.preact.h,
render = window.preact.render;
var PreactApp = function (props){
return h('h1',
{className: ''},
'Hello from Preact world!');
}
render(PreactApp(),document.getElementById("preact"));
Here in JS if you see h ( converting jsx to vdom ) and render (converting vdom to html ) function actually do the magic. Read more about from the official documentation - https://preactjs.com/guide/api-reference
Working example - https://jsfiddle.net/97125m3z/2/
Technically it is possible by using the HTM package, as long as you're targeting recent browsers that understand template strings. See https://github.com/developit/htm for details.
However, this will render slower than simply creating the components using h() as it is a whole heap of string parsing. It also makes it difficult to use syntax highlighting in your IDE, which makes debugging frustrating.
I used HTM when I was first getting used to using Preact without a build step, but very quickly replaced it with manually creating the components and eliminated the JSX.
You get a better understanding of how everything fits together if you don't use the JSX abstraction. Babel compiles it down into createElement calls anyway.
I want to render the pure HTML coming from some external source into react component. I saw few solutions where people are talking about some conversion tools (HTML to JSX) but I want to handle everything in my component so while mounting it will get the HTML response and that needs to render.
You can use dangerouslySetInnerHTML for this:
function createMarkup() { return {__html: 'First ยท Second'}; };
<div dangerouslySetInnerHTML={createMarkup()} />
But as the method name suggests: you should be very sure of what you are doing there and the security implications it has.
This shouldn't be difficult to do . Assign your HTML to a div and then render it using {variable name} JSX allows you to do this and with ES6 integration you can also use class instead of className.
var Hello = React.createClass({
render: function() {
var htmlDiv = <div>How are you</div>
return <div>Hello {this.props.name}
{htmlDiv}
</div>;
}
});
ReactDOM.render(
<Hello name="World" />,
document.getElementById('container')
);
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.8/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.8/react-dom.min.js"></script>
<div id="container">
<!-- This element's contents will be replaced with your component. -->
</div>
Can anyone point me if svg <use> can work in IE 11 and how, inside of Angular 2 component?
It works fine in Chrome but does not work in IE for me.
I did include svg4everybody.js library but if I use this inside of a component template or template url, it does not work.
Please let me know what I should do. Thanks you ver much
import {Component} from '#angular/core';
#Component({
selector: 'my-app',
template: `
<h1>My First Angular 2 App</h1>
<svg viewBox="0 0 32 32" width='150' height='150' fill='pink' role='img'>
<use xlink:href="app/sprites.svg#splitup"/>
</svg>
`
})
export class AppComponent { }
<html>
<head>
<title>Angular 2 QuickStart</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="styles.css">
<!-- Polyfill(s) for older browsers -->
<script src="node_modules/core-js/client/shim.min.js"></script>
<script src="node_modules/zone.js/dist/zone.js"></script>
<script src="node_modules/reflect-metadata/Reflect.js"></script>
<script src="node_modules/systemjs/dist/system.src.js"></script>
<script src="node_modules/svg4everybody/svg4everybody.js"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('app').catch(function(err){ console.error(err); });
</script>
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>
Well, It's not related to IE11, supports it SVG or no. Problem is that, at the point, when svg4everybody.js is loaded and svg4everybody() method is called, your template isn't rendered in the DOM.
So, you will need to call svg4everybody() from component's ngOnInit method.
See this: Include External JavaScript Libraries In An Angular 2 TypeScript Project
is not supported on IE10, IE11. But inline svg will however work.
Therefore you should rely on a module to import the symbol into the dom as a standalone svg.
You can use the module: https://github.com/arkon/ng-inline-svg
With the [forceEvalStyles]="true" parameter for IE11.
This lib does not work with IE10, perhaps a reason is innerHTML not working on IE10 with SVG content.
Shims are available (I did not test the ng-inline-svg with them on IE10)
https://code.google.com/archive/p/innersvg/
https://www.npmjs.com/package/svg-innerhtml
In addition to David Gabrichidze anwser, it's possible to add svg4everyone with npm install.
npm install --save svg4everybody
Add script in angular.json
...
"scripts": ["./node_modules/svg4everybody/dist/svg4everybody.js"]
...
And then use it like this in app.component.ts:
import { Component, OnInit } from '#angular/core';
declare const svg4everybody: any;
#Component({
selector: 'app-root',
template: ''
})
export class AppComponent implements OnInit {
ngOnInit(): void {
// IE 11 external svg support
svg4everybody();
}
}
I'm trying to get an isomorphic Node.js, Express, Webpack, React app working. I'm getting the following error. Any suggestions on how to fix it?
Warning: React attempted to reuse markup in a container but the checksum was invalid. This generally means that you are using server rendering and the markup generated on the server was not what the client was expecting. React injected new markup to compensate which works but you have lost many of the benefits of server rendering. Instead, figure out why the markup being generated is different on the client or server:
(client) rgin:0;display:flex;-webkit-align-items:
(server) rgin:0;display:flex;align-items:center;j
warning # warning.js:45
ReactMount._mountImageIntoNode # ReactMount.js:807
wrapper # ReactPerf.js:66
mountComponentIntoNode # ReactMount.js:268
Mixin.perform # Transaction.js:136
batchedMountComponentIntoNode # ReactMount.js:282
Mixin.perform # Transaction.js:136
ReactDefaultBatchingStrategy.batchedUpdates # ReactDefaultBatchingStrategy.js:62
batchedUpdates # ReactUpdates.js:94
ReactMount._renderNewRootComponent # ReactMount.js:476
wrapper # ReactPerf.js:66
ReactMount._renderSubtreeIntoContainer # ReactMount.js:550
ReactMount.render # ReactMount.js:570
wrapper # ReactPerf.js:66
(anonymous function) # client.jsx:14
(anonymous function) # iso.js:120
each # iso.js:21
bootstrap # iso.js:111
(anonymous function) # client.jsx:12
__webpack_require__ # bootstrap d56606d95d659f2e05dc:19
(anonymous function) # bootstrap d56606d95d659f2e05dc:39
(anonymous function) # bootstrap d56606d95d659f2e05dc:39
This is what is being delivered by the server to the browser initially:
<!doctype html>
<html lang="">
<head>
<title>my title</title>
<meta name="apple-mobile-web-app-title" content="my title" data-react-helmet="true" />
<meta name="apple-mobile-web-app-status-bar-style" content="black" data-react-helmet="true" />
<meta name="apple-mobile-web-app-capable" content="yes" data-react-helmet="true" />
<meta name="mobile-web-app-capable" content="yes" data-react-helmet="true" />
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no" data-react-helmet="true" />
<meta name="description" content="my description." data-react-helmet="true" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" data-react-helmet="true" />
<meta charset="utf-8" data-react-helmet="true" />
<link rel="stylesheet" href="/assets/styles/reset.css" data-react-helmet="true" />
<link rel="stylesheet" href="/assets/styles/base.css" data-react-helmet="true" />
<link rel="stylesheet" href="/assets/styles/Carousel.css" data-react-helmet="true" />
<link rel="stylesheet" href="/assets/styles/main.css" data-react-helmet="true" />
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto+Condensed" type="text/css" data-react-helmet="true" />
<link rel="icon" href="/assets/185bb6f691241307862b331970a6bff1.ico" type="image/x-icon" data-react-helmet="true" />
SCRIPT
</head>
<body>
<script src="https://cdn.firebase.com/js/client/2.2.7/firebase.js"></script>
<script src="https://cdn.firebase.com/libs/reactfire/0.4.0/reactfire.min.js"></script>
<div class="app">
<div class="___iso-html___" data-key="_0"><div data-reactid=".1hkqsbm9n9c" data-react-checksum="794698749"><div data-reactid=".1hkqsbm9n9c.0"><div data-reactid=".1hkqsbm9n9c.0.$=10"></div><div style="position:fixed;z-index:2;top:0;left:0;right:0;height:60px;color:rgb(219,219,219);font-family:mainnextcondensed_ultralight;font-size:17px;overflow:hidden;" data-reactid=".1hkqsbm9n9c.0.$/=11"><div style="position:absolute;left:0;top:0;background-color:rgba(27,27,27,0.92);padding-right:35px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=10"><div style="float:left;height:60px;width:13px;border-left:5px solid rgb(210,45,164);" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=10.$/=10"></div><div style="float:left;height:60px;width:227px;background-image:url(data:image/png;base64,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);background-repeat:no-repeat;background-position:center;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=10.$/=11"></div><div style="display:none;width:0;height:0;border-style:solid;border-width:6px 6px 0 6px;border-color:rgb(117,117,117) transparent transparent transparent;-webkit-transform:rotate(360deg);float:left;margin-left:6px;margin-top:26px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=10.$/=12"></div></div><div style="position:absolute;top:0px;left:280px;width:340px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=11"><div style="background-color:rgba(27,27,27,0.92);height:10px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=11.$/=10"></div><div style="background-color:rgba(53,53,53,0.84);height:40px;position:relative;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=11.$/=11"><div style="position:absolute;top:0;bottom:0;left:0;right:0;padding:0;margin:0;display:flex;align-items:center;justify-content:center;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=11.$/=11.$=10"><div style="background-image:url('/assets/3bec3e57cb5ee05658440d21984fb7b7.png');background-repeat:no-repeat;background-position:-58px -194px;width:23px;height:22px;position:absolute;top:50%;left:10px;margin-top:-11px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=11.$/=11.$=10.$icon"></div></div><div style="position:absolute;left:40px;right:40px;top:0px;bottom:0px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=11.$/=11.$/=12"><input type="text" style="width:100%;height:100%;font-size:14px;font-family:mainnext_regular;background-color:transparent;color:#ffffff;" placeholder="SEARCH ARTISTS, TRACKS, ALBUMS" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=11.$/=11.$/=12.0"/></div></div><div style="background-color:rgba(27,27,27,0.92);height:10px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=11.$/=12"></div></div><div style="position:absolute;top:0px;left:620px;right:0px;background-color:rgba(27,27,27,0.92);height:60px;line-height:60px;overflow:hidden;min-width:500px;padding-left:10px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=12"><div style="position:absolute;top:0px;bottom:0px;right:0px;width:357px;padding-left:141px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=12.0"><a class="" href="/import" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=12.0.$/=10"><div style="padding-left:40px;position:absolute;left:0px;top:10px;bottom:10px;cursor:pointer;line-height:40px;color:rgb(255,255,255);" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=12.0.$/=10.$import"><div style="position:absolute;top:0;bottom:0;left:0;right:0;padding:0;margin:0;display:flex;align-items:center;justify-content:center;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=12.0.$/=10.$import.$=10"><div style="background-image:url('/assets/3bec3e57cb5ee05658440d21984fb7b7.png');background-repeat:no-repeat;background-position:0px -194px;width:28px;height:28px;position:absolute;top:50%;left:0px;margin-top:-14px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=12.0.$/=10.$import.$=10.$icon"></div></div><span data-reactid=".1hkqsbm9n9c.0.$/=11.$/=12.0.$/=10.$import.1">Import Playlists</span></div></a><div style="margin-left:10px;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=12.0.$admin/=1$admin"><div style="cursor:pointer;float:left;" data-reactid=".1hkqsbm9n9c.0.$/=11.$/=12.0.$admin/=1$admin.$login">Login</div></div></div></div></div></div><noscript data-reactid=".1hkqsbm9n9c.1"></noscript></div></div>
<div class="___iso-state___" data-key="_0" data-meta="{}" data-state=""{\"UserStore\":{\"user\":{\"authenticated\":false,\"isWaiting\":false}},\"SearchStore\":{\"focused\":false,\"input\":\"\",\"timeout\":null,\"searchRequests\":[],\"artists\":null,\"artistsFailed\":false,\"artistsLoading\":false,\"tracks\":null,\"tracksFailed\":false,\"tracksLoading\":false,\"albums\":null,\"albumsFailed\":false,\"albumsLoading\":false,\"playlists\":null,\"playlistsFailed\":false,\"playlistsLoading\":false,\"youtubes\":null,\"youtubesFailed\":false,\"youtubesLoading\":false,\"soundclouds\":null,\"soundcloudsFailed\":false,\"soundcloudsLoading\":false},\"PlayerStore\":{\"player\":null,\"playerSecond\":null,\"playingTrack\":null,\"playingTrackSecond\":null,\"videoId\":null,\"videoIdSecond\":null,\"makingPlayingTrackPlayable\":false,\"radio\":false,\"startSeconds\":0,\"current\":0,\"total\":0,\"perc\":0,\"currentSecond\":0,\"totalSecond\":0,\"percSecond\":0,\"playing\":false,\"playingSecond\":false,\"secondsListened\":0,\"secondsListenedSecond\":0,\"expand\":false,\"source\":null,\"tracksQueue\":[],\"tracksPrevQueue\":[],\"favorite\":false,\"random\":false,\"repeat\":false,\"mute\":false,\"volume\":100,\"mode\":\"standard\"},\"ImportStore\":{\"url\":\"\",\"error\":false,\"focused\":false,\"loading\":false,\"loaded\":false,\"playlist\":null}}""></div>
</div>
<!-- Google Analytics: change UA-XXXXX-X to be your site's ID -->
<!--
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-XXXXX-X', 'auto');
ga('send', 'pageview');
</script>
-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/fastclick/1.0.3/fastclick.min.js"></script>
<script type="text/javascript">
if ('addEventListener' in document) {
document.addEventListener('DOMContentLoaded', function() {
FastClick.attach(document.body);
}, false);
}
</script>
<script type="text/javascript" charset="utf-8" src="/assets/app.js"></script>
</body>
</html>
This is my server.jsx:
import Iso from 'iso';
import React from 'react';
import ReactDomServer from 'react-dom/server';
import { RoutingContext, match } from 'react-router'
import createLocation from 'history/lib/createLocation';
import alt from 'altInstance';
import routes from 'routes.jsx';
import html from 'base.html';
/*
* #param {AltObject} an instance of the Alt object
* #param {ReactObject} routes specified in react-router
* #param {Object} Data to bootstrap our altStores with
* #param {Object} req passed from Express/Koa server
*/
const renderToMarkup = (alt, state, req, res) => {
let markup, content;
let location = new createLocation(req.url);
alt.bootstrap(state);
match({ routes, location }, (error, redirectLocation, renderProps) => {
if (redirectLocation)
res.redirect(301, redirectLocation.pathname + redirectLocation.search)
else if (error)
res.status(500).send(error.message)
else if (renderProps == null)
res.status(404).send('Not found')
else
content = ReactDomServer.renderToString(<RoutingContext {...renderProps} />);
markup = Iso.render(content, alt.flush());
});
return markup;
};
/*
* Export render function to be used in server/config/routes.js
* We grab the state passed in from the server and the req object from Express/Koa
* and pass it into the Router.run function.
*/
export default function render(state, req, res) {
const markup = renderToMarkup(alt, state, req, res);
return html.replace('CONTENT', markup);
};
And this is my client.jsx:
import React from 'react';
import ReactDOM from 'react-dom';
import Iso from 'iso';
import createBrowserHistory from 'history/lib/createBrowserHistory';
import { Router } from 'react-router';
import alt from 'altInstance';
import routes from 'routes.jsx';
/*
* Client side bootstrap with iso and alt
*/
Iso.bootstrap((state, _, container) => {
alt.bootstrap(state);
ReactDOM.render(<Router history={createBrowserHistory()} children={routes} />, container);
});
And my routes.jsx:
import React from 'react';
import Route from 'react-router';
import App from 'components/App';
import ImportPlaylist from 'components/ImportPlaylist';
import Login from 'components/Login';
import Logout from 'components/Logout';
import Player from 'components/Player/Player';
import Test from 'components/Test';
export default (
<Route path="/" component={App}>
<Route path="login" component={Login} />
<Route path="logout" component={Logout} />
<Route name="test" path="test" component={Test} />
<Route name="import" path="import" component={ImportPlaylist} />
<Route name="player" path="/:playlist" component={Player} />
</Route>
);
Note: This applies to older versions of React. If you're using React 16, you should use ReactDOM.hydrate()
Also, the below suggestion will result in a client-side re-render, as suggested by one of the answers below.
This may sound crazily simple, but in your server-side template, wrap your React markup in an extra <div>:
<!-- hypothetical handlebars template -->
<section role="main" class="react-container"><div>{{{reactMarkup}}}</div></section>
Why does this work? On the client, React has a propensity to wrap its rendering of your root component with a superfluous div. ReactDOMServer.render doesn't seem to behave in this manner, thus when one renders into the same container isomorphically, the Adler-32 checksum of your DOM differs.
For those googling and coming here, one weird way of ending up with this issue is where you're not even using isomorphic rendering (i.e. not rendering anything on the server side). This happened with me when using a template with the HtmlWebpackPlugin to process an index.html file.
In my index.html file I already included the bundle.js file myself, and the above plugin also includes another bundle.js via a script-src. Make sure you're setting inject: false to your HtmlWebpackPlugin constructor.
For me killing nodejs completely and restarting worked
WARNING The popular answer here is not correct. What it is doing is removing the existing DOM entirely, and replacing it with a fresh render on the client. It means you lose the fast shallow render from React and are wasting perf, and as a consequence it also swallows the OP error, and any other errors you might have.
Your issue appears to be with CSS - if you are using autoprefixer and inline-styles that would explain your difference here.
The server side has rendered align-items:center and the client has realised it's in a webkit browser and automatically prefixed it for you to -webkit-align-items.
Please post more info about the CSS set up, and any component using inline-styles or similar.
If you are rendering your main content inside of a layout component, you will need to render the layout as static markup (no react attributes) so that the checksum of the content matches between the client and server.
Server:
app.get('/', (req, res) => {
// render the content to a string so it has the same checksum as on the client
// render the layout to static markup so that it does affect the checksum
// this ensures that rendering is isomorphic and client doesn't override server markup
const content = reactDomServer.renderToString(<MyContent />)
const html = '<!DOCTYPE html>' + reactDomServer.renderToStaticMarkup(<HtmlLayout content={content} />)
res.send(html)
})
HtmlLayout:
export default class HtmlLayout extends React.Component<any, any> {
public render () {
return (
<html lang='en'>
<head>
<meta charSet='utf-8' />
<meta name='viewport' content='width=device-width, initial-scale=1' />
<title>Untitled</title>
<link rel='stylesheet' href='/style/bundle.css' />
</head>
<body>
{ /* insert the content as a string so that it can be rendered separate with its own checksum for proper server-side rendering */ }
<div id='content' dangerouslySetInnerHTML={ {__html: this.props.content} } />
<script src='scripts/bundle.js'></script>
</body>
</html>
)
}
}
Client:
const root = document.getElementById('content')
DOM.render(<MyContent />, root)
Reference: http://jeffhandley.github.io/QuickReactions/20-final-cleanup
In my case the problem was caused by the fact that I was using MediaQuery component from 'react-responsive' without passing the 'value' property which is used by the component when it is not able to access the screen width (e.g. on the Server).
I came across this issue on an Isomorphic app I was working on. What worked for me is, believe it or not, Emptying cache and hard reloading the app on Chrome. Looked like the old DOM was somehow cached on the Browser :)