Why do we need to use webpack, is it only for bundling and inheriting Plugins to minimize and compress.
what are all the major roles webpack plays in web application development?
The uses of webpack include
Transpile the JSX syntax (HTML tags inside Javascript) into JS
Transpile the ES6 syntax (arrow functions, spead operator, etc) into browser supported versions of Javascript.
It is much better to split code into separate files (modules) which can be imported. Webpack 'bundles' all those files into a single JS file for production use
At the time of bundling, it can also perform optimisations like minify, uglify, etc.
BTW, you don't need to use webpack. For example,
<!DOCTYPE html>
<html lang="en">
<head>
<title>My First React Example</title>
</head>
<body>
<div id="greeting-div"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.0.0/cjs/react.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.0.0/cjs/react-dom-server.browser.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.34/browser.min.js"></script>
<script type="text/babel">
var Greeting = React.createClass({
render: function() {
return (
<p>Hello, Universe</p>
)
}
});
ReactDOM.render(
<Greeting/>,
document.getElementById('greeting-div')
);
</script>
</body>
</html>
Here, the JSX code is getting 'transpiled' to JS on-the-fly. However, this is not very efficient in production use.
As you mentioned, Webpack is a bundling tool, and you can use any other bundling tools such as browserify / rollup.
React apps usually gonna use ES6 imports, and not all the browsers supports it yet, therefore you need in React apps use some bundler to solve those "imports" and create a bundle file that the current browsers understands.
Webpack just got more popular and robust in the Front End community therefore most of the "starter kits" like create-react-app will use it.
Related
Is there a way to achieve this? I use react.js in the front end only and want to keep it like this.
When you build your application via Yarn/npm, that's what basically you'd be doing. The system will bundle your assets and generates an HTML file. If you open the built index.html you should see your parsed React app in plain JS and HTML.
If you plan to put the build on a CDN, all you need to do is move the assets (JS and CSS) and the index.html wherever you want to host them. Ensure that <script> and <link> are pointing to the bundled assets within your index.html.
<script type="text/javascript" src="/static/js/your-bundle-main.js"></script>
<link href="/static/css/your-bundlemain.0a265734.css" rel="stylesheet">
You can use unpkg, is a fast, global content delivery network for everything on npm. Use it to quickly and easily load any file from any package using a URL like:
<script src="unpkg.com/react#15.3.1/dist/react.min.js"></script>
<script src="unpkg.com/react-dom#15.3.1/dist/react-dom.min.js"></script>
My project is not node based so I am transpiling my jsx code in the browser, using the browser.js babel component downloaded from a CDN.
I would like to use the transform-class-properties babel plugin, but I can't figure out how to make it work when using babel in the browser from a CDN.
yes, I know I should use webpack and pre-transpile all my jsx code. I promise I will eventually.
We must add data-plugins="transform-class-properties" to use class properties feature, as shown in the sample below:
<script type="text/babel"
data-plugins="transform-class-properties"
data-presets="react, es2015,stage-2"
src="js/main.js">
</script>
You can see my codepen code here in https://codepen.io/ciptohadi79/pen/QxggwO
To spell it out:
<script src="https://unpkg.com/babel-standalone#6/babel.min.js"></script>
<!-- Your custom script here -->
<script type="text/babel" data-plugins="">
//
// your jsx goes here
//
</script>
I downloaded React version 15 and created the following html document:
<!DOCTYPE html>
<html>
<head>
<script src="build/react.js"></script>
<script src="build/react-dom.js"></script>
</head>
<body>
<div id="container"></div>
<script type="text/jsx">
// React Code Goes Here
var MyComponent = React.createClass({
render: function(){
return (<h1>Hello, {this.props.name}!</h1>);
}
});
ReactDOM.render(
<MyComponent name="world" />,
document.getElementById('container')
);
</script>
</body>
</html>
The same works fine in jsfiddle but not on my machine. I want to avoid installing React dev tools or anything extra. Is that possible to get it to work with what I have or do I absolutely need to install something else?
There are tons of tutorials out there but they all seem to be missing something to get me started
If you're sure you have the react.js and react-dom.js files in a folder called build at the same level as that html page, the only thing missing would be:
a script include for babeljs in order for you to be able to use the JSX code you have in the body's script tag, add this to the <head> tag:
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.34/browser.min.js"></script>
As a precursory statement, I just want to make sure to mention that you probably won't want to do in-browser transpilation from JSX->JS for anything other than playing around with the technology. In a production environment you would want to precompile your JSX server-side or during a build step.
That being said, therein lies your problem: you're attempting to include JSX directly in the browser code, without including anything to do browser-side compilation for you.
Based on what I can see, it looks like the latest and greatest approach is to use <script type="text/babel"> now, instead of <script type="text/jsx">, and the compilation is accomplished via babel's browser.js.
This guide here appears to be mostly up to date: https://www.sitepoint.com/getting-started-react-jsx/
I'd say that if you are just starting react, a really good project to look at would be create-react-app. It does all the magic for you with one simple set up
I'm experimenting with the Angular UI Bootstrap libraries (specifically modal) but I'm having trouble getting the right versions of each library loaded in the right order, but I keep coming up against the No module: template/accordion/accordion-group.html error. I've switched back to Bootstrap 2.3 but it's still there. My application header is below, can anyone spot any wrong versions or JS files out of order? I'm also using Angular UI Sortable, hence its inclusion.
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>
<script src="http://code.angularjs.org/1.0.2/angular.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/angular-ui/0.4.0/angular-ui.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-ui-bootstrap/0.13.4/ui-bootstrap-tpls.min.js"></script>
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.3.2/css/bootstrap.css">
<link rel="stylesheet" href="style.css" />
</head>
My app declaration looks like this:
var app = angular.module('myModule', ['ui', 'ui.bootstrap']);
Edit
I managed to get it working like this:
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.16/angular.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/angular-ui-bootstrap/0.11.2/ui-bootstrap-tpls.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/angular-ui-sortable/0.13.2/sortable.min.js"></script>
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.3.2/css/bootstrap.css">
<link rel="stylesheet" href="style.css" />
</head>
and
var app = angular.module('myModule', ['ui.sortable', 'ui.bootstrap']);
did you download all the files? according to their docs
Files to download
Build files for all directives are distributed in several flavours:
minified for production usage, un-minified for development, with or
without templates. All the options are described and can be downloaded
from here. It should be noted that the -tpls files contain the
templates bundled in JavaScript, while the regular version does not
contain the bundled templates. For more information, check out the FAQ
here and the README here.
Alternativelly, if you are only interested in a subset of directives,
you can create your own build.
Whichever method you choose the good news that the overall size of a
download is very small: <76kB for all directives (~20kB with gzip
compression!)
Looks like your error is with a template not begin available or loaded. Maybe you missed the download which packaged the templates. In your case the accordian template isn't being loaded.
After reading the FAQs I'm also wondering if having both angular-ui cdns is causing your problem. The angular-ui is loading first without templates and then your loading angular-ui-bootstrap with templates.
Angular-ui-bootstrap FAQ
This project comes with several deliverables described here:
https://github.com/angular-ui/bootstrap/tree/gh-pages#build-files If
the roles of those files are not clear for you just pick
ui-bootstrap-tpls-[version].min.js, but be sure to include only one
file in your project.
You're showing this
<script src="http://cdnjs.cloudflare.com/ajax/libs/angular-ui/0.4.0/angular-ui.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-ui-bootstrap/0.13.4/ui-bootstrap-tpls.min.js"></script>
Try just loading
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-ui-bootstrap/0.13.4/ui-bootstrap-tpls.min.js"></script>
More info on the builds from github
the excerpt i'm reading is
Now it should be clear that files with the -tpls in their name have
bootstrap-specific templates bundled with directives. For people who
want to take all the directives and don't need to customize anything
the solution is to grab a file named
ui-bootstrap-tpls-[version].min.js. If, on the other hand default
templates are not what you need you could take
ui-bootstrap-[version].min.js and provide your own templates, taking
the default ones
(https://github.com/angular-ui/bootstrap/tree/master/template) as a
starting point.
Did you add 'ui.router' and 'ui.sortable' as dependency in your app.js file ?
var myApp = angular.module('myApp', ['ui.router','ui.sortable']);
I would use a package manager such as Bower or WebPack to manage your client side dependencies.
According to the Angular UI docs you only need to add:
AngularJS and Bootstrap CSS. No need for jQuery.
And then you should initialize your Angular App module with ui.bootstrap dependency:
angular.module('myModule', ['ui.bootstrap']);
== UPDATE
According to this example, this should be everything you need:
index.html
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.4/angular.min.js"></script>
<script src="https://rawgithub.com/angular-ui/ui-sortable/master/src/sortable.js"></script>
```
app.js
var myapp = angular.module('sortableApp', ['ui.sortable']);
Let me know if this helps you
Some reactjs code includes reactJs source inside html file,
<script src="react-0.13.1.js" type="text/javascript"></script>
<script src="JSXTransformer-0.13.1.js" type="text/javascript"></script>
<script src="app.js"></script>
Some people are using commonJs require syntax in their app.js,
var React = require("React")
Does both the code blocks do the same thing?
How does the browser handle the require function call because mostly servers use require function?
If you use the CommonJS module system, you need a tool like Browserify or Webpack to analyse your code and see which modules you are requiring. They then take all those modules, and bundle them into one big Javascript file. And since all the code/modules are in the same file at the end, you can require modules in a way which makes it look like it is blocking the UI during the time the module is located, but it's really not.