Note: There is a GitHub issue open on the Svelte repo for this very question.
https://github.com/sveltejs/svelte/issues/4838
While I understand that this may or may not someday become a feature of Svelte, what I am asking is how I can create a workaround today to support a third-party web component library like Shoelace or UI5, or Ionic with two-way binding?
Synopsis:
I have set up a Svelte app and successfully added a Web Component Library (Ex: Shoelace).
I write a line of code that uses two-way binding like:
<sl-input name="name" type="text" label="Name" bind:value={name}/>
I cannot two-way bind (bind:value={}) because the Svelte compiler doesn't recognize the valid bindings for the custom web components.
If there were a wrapper library that you know of, or some other thing I could do to make it work, that would be great.
I am not sure if this will work with libraries but it is worth a shot. For my custom component I just followed this answer.
Add this in your custom component:
<script>
export let onValueChange;
export let value;
$: onValueChange(value);
</script>
And add this when using the component (it will give an error until you add this)
<custom-component onValueChange="{(x) => value = x}"/>
Related
Im using the login example from the Meteor React Tutorial
meteor add accounts-ui accounts-password
Its all ok but Im trying to find the file and change it but I dont know where is it.
This is my code:
import { Blaze } from 'meteor/blaze';
export default class AccountsUIWrapper extends Component {
componentDidMount(){
this.view = Blaze.render(Template.loginButtons,
ReactDOM.findDOMNode(this.refs.container));
}
componentWillUnmount(){
Blaze.remove(this.view);
}
render(){
return <span ref="container"/>
}
}
And i have installed meteor add useraccounts:materialize
How can I put the template on this?
You need to put your component inside /imports/ui/ directory and name the file as AccountsUIWrapper.jsx
So it will be saved as /imports/ui/AccountsUIWrapper.jsx.
Then you can import your wrapped component inside /imports/ui/App.jsx file with:
import AccountsUIWrapper from './AccountsUIWrapper.jsx';
And then use it in your React render function in the same file as:
<AccountsUIWrapper />
The tutorial lays it out pretty clearly, including all the filenames and locations. You should be able to access their GitHub repository for the same.
If you want, for reference, you can also take a look at my code at this particular step back when when I did this tutorial myself.
Update: For useraccounts:materialize
The useraccounts:materialize package that you have mentioned depends on useraccounts:core package as its base. So you cannot apply useraccounts:materialize to default meteor accounts package directly.
Follow the instructions on useraccounts:core to set it up. You may need to remove accounts-ui as well, as it would likely clash with the above packages.
Then, go through the documentation for useraccounts that shows how to render their accounts template in Blaze.
After that, using the same way as shown in the tutorial, you should be able to create a new React wrapper for useraccounts:materialize Blaze template.
Here are links to boilerplate useraccounts:materialize code for Iron Router and Flow Router. From these you can take reference for the Blaze template code, which you can then wrap in React:
Boilerplate with iron:router
Boilerplate with FlowRouter
I am a newbie in angular2 and want to know the purpose of following imports we do in our angular2 app.
<script src="node_modules/es6-shim/es6-shim.min.js"></script>
<script src="node_modules/systemjs/dist/system-polyfills.js"></script>
<script src="node_modules/angular2/bundles/angular2-polyfills.js"></script>
<script src="node_modules/systemjs/dist/system.src.js"></script>
<script src="node_modules/rxjs/bundles/Rx.js"></script>
<script src="node_modules/angular2/bundles/angular2.dev.js"></script>
<script src="node_modules/angular2/bundles/http.dev.js"></script>
so my questions regarding these imports are:
what are these imports for?
does the sequence of these imports metter?
are there any other useful imports that we must be aware of?
Thanks in advance.
I don't see any imports in your code sample. Its just including the files of various libraries into web page. If you read some of them one by one:
es6-shim.min.js - adds ES6 language features to browsers (full list)
Rx.js adds Observables library (GitHub RxJS)
http.dev.js - adds angular2 $http module to make requests
So you can google each of the names and figure out for yourself if that's applicable for your project.
More on modules and actual imports in ES2015/ES6 you can read here https://ponyfoo.com/articles/es6-modules-in-depth for example.
"useful imports that we must be aware of?"
Totally depends on your needs. By I assume angular2.dev.js and http.dev.js would be a good to start.
"does the sequence of these imports matter?"
Not now, but only if you're using proper module system so that browser can load missing parts before executing the blocks that depend on them. And also the loader file (system.js/require.js) should be in the first before all the other files.
Here are the details about what you specified in your script elements:
The two first files aren't necessary if you use TypeScript and have configuted ES5 output.
angular2-polyfills.js - Contains ZoneJS (to trigger change detection - see What is the Angular2 equivalent to an AngularJS $watch?) and reflect-metadata (to set metadata on objects from decorators)
system.src.js - SystemJS, the library that manages modules. In short when you use import and export in TypeScript the corresponding compiled code relies on it.
Rx.js - RxJS, a library that provides an implementation of Reactive Programming concepts. In short, it provides an implementArion of observables and their operators. EventEmitters, HTTP rely on this.
angular2.dev.js - Angular2 core bundle
http.dev.js - HTTP support of Angular2
I am looking for an example about combining the four technologies in the title :) I have a working ReactJS application using Play, Scala and WebJars, it's here on GitHub.
Now I would like to add RequireJS, but I'm not sure how to go, especially because it seems to require a different JSXTransformer? If anybody has a pointer (or even a PR) it would be very appreciated.
This is not the easiest thing to do, but I was able to pull it off. I will give you some tips here. I also uploaded my own project to github. This is a very simple snake game built using React and RequireJs. It based on Webjars and Play Framework.
Remember that RequireJs is part of Play Framework. Here's a step by step guide to create React/RequireJs/WebJars/Play integration:
In your plugins.sbt add addSbtPlugin("com.github.ddispaltro" % "sbt-reactjs" % "0.5.2"). This is a plugin which transforms JSXes into JSes and also strips flow types if you want that.
In your main scala.html file add #helper.requireJs(core = routes.WebJarAssets.at(WebJarAssets.locate("require.js")).url, module = routes.Assets.at("javascripts/main").url). This will add add a script tag with data-main and src attributes that are used to bootstrap your RequireJs app.
Create react.js file in your assets/javascripts folder:
define(['../lib/react/react-with-addons'], function(React) {
window.React = React;
return React;
});
Create main.jsx file in your assets/javascripts folder:
require.config({
// standard requirejs config here
});
require(['react', 'components/YourComponent'], function(React, YourComponent) {
'use strict';
$(document).ready(function() {
React.render(<YourComponent />, document.getElementById('container'));
});
});
Your standard React component goes to assets/javascripts/components/YourComponent.jsx and is defined like standard RequireJs module. Remember to return a React class:
define(function(require) {
var React = require('react');
var AnotherComponent = require('components/AnotherComponent');
return React.createClass({ ... });
}
I hope that helps. If you have any questions, please let me know.
Someone said to have got the text plugin working with sbt-rjs: https://groups.google.com/forum/#!topic/play-framework/F789ZzTOthc
I would attempt with the text plugin first, as it's the simplest plugin of all, right? Once this is successful, move on to the JSX plugin:
https://github.com/philix/jsx-requirejs-plugin
Have a look at: https://github.com/nemoo/democratizer
This is an example project that uses play framework, scala, slick, mysql as a restful backend.
The client is a javascript single page application (SPA) written in react. It uses react router for client site routing and ES6 javascript.
The build process combines webpack and play activator which enables simple automatic browser refresh for server and client side code.
Working in Wicket 6. My page includes a javascript reference in the html to a third party library. I have a block of additional standard utils that I include via JavaScriptHeaderItem in a renderHead in the Behavior class from a custom component.
Now, that same component needs to write some specific javascript code inline to call methods from those two includes. The problem is that the code is running before even simple variables within those includes are loaded. Wicket puts both ABOVE the 3rd party library in the header.
I want to render the code in a tag within the body to make sure that both have at least loaded before my code runs. The third party library has a DomReady event, but that at least requires the base variable to be defined.
I gather that I am meant to use FilteringHeaderResponse or HeaderResponseContainer somehow, but the examples/javadocs aren't very clear to me. Let's say my inline javascript was meant to be:
String js = "alert('Hello '" + userName + ");";
from java. It isn't, it's more complicated than that, but if it were, how would I, from a FormComponentPanel, render this inline javascript? And how can I dynamically include my custom js, but make sure it renders BELOW the 3rd party js in the header, but before my inline script runs?
I ended up using:
response.render(OnDomReadyHeaderItem.forScript(writeGridJS()));
Put your js into a file like my.js and make it a ResourceReference. Then add the libraries your code depends on as dependencies to this ResourceReference. here you got two good links on that:
http://wicketinaction.com/2012/07/wicket-6-resource-management/
http://wicket.apache.org/guide/guide/chapter14.html#chapter14_5
I've working on a project and I'm using some jquery plugins, right now I'm trying to update my code to use backboje js but it's not clear how to put together those old plugins with backbone js.
the most important plugin I want to use is jcvl (http://code.google.com/p/jcvl/) but I'm trying to put this question general to get more ideas about how to integrate any pluggin with backbone.
Backbone only creates one global variable, Backbone, so there shouldn't be any conflicts with any jQuery plugins. Backbone also depends on Underscore.js, which also only creates one global variable, _, so it also shouldn't cause any conflicts. And if there is a conflict, both Backbone and Underscore.js offer you a noConflict() option.
I've been using Backbone with jQuery plugins for a while and haven't encountered any problems. You would use the plugin in the same way as before you introduced Backbone. For example:
var MyView = Backbone.View.extend({
render: function(){
$(this.el).html('<div class="foo"></div>');
this.$('.foo').somejQueryPlugin();
}
});