I have the following react html page contents, and I would like to know the problems with this style of react development. Mainly I do not use any bundling tools. I am a newbie and finds this very easy for development and integration with server side languages.
<!DOCTYPE html>
<html lang="en">
<head>
<title>My First React Example</title>
</head>
<body>
<div id="greeting-div"></div>
<script src="react.development.js"></script>
<script src="react-dom.development.js"></script>
<script src="browser.min.js"></script>
<script>
</script>
<script type="text/babel">
class Greeting extends React.Component{
render() {
return (
<p id="test">Hello, Universe</p>
)
}
};
ReactDOM.render(
<Greeting/>,
document.getElementById('greeting-div')
);
</script>
</body>
</html>
You can't have hot reloading which is pretty awesome in React.
It will also scale awfully as you will have all your elements inside of the same html.
It will probably be bad to run a linter / any code analysis tool for it.
You should probably try create-react-app: https://github.com/facebookincubator/create-react-app, it's really simple to get started and you'll get a really good development setup.
Related
React noob here, I am working on a simple JSX based component with the code below:
<!DOCTYPE html>
<html>
<head>
<title>React Boot camp Day 1</title>
</head>
<body>
<div id='app'></div>
<!--Needed for react code-->
<script crossorigin src="https://unpkg.com/react#16/umd/react.development.js"></script>
<!--Needed for react dom traversal-->
<script crossorigin src="https://unpkg.com/react-dom#16/umd/react-dom.development.js"></script>
<script src='https://unpkg.com/babel-standalone#6/babel.min.js'></script>
<script>
console.log('Test React', window.React)
const name = "Callat"
const handle = "#latimeks"
// create components and use jsx
function FirstComponent(props){
return <h1>{props.name}</h1>
}
function TestJSX(){
return (<FirstComponent name={name}/>)
}
ReactDOM.render(<TestJSX/>, document.getElementById('app'))
</script>
</body>
</html>
Running this code yields no UI and in dev tools I see this
Uncaught SyntaxError: Unexpected token < index.html:42
Which is the
function FirstComponent(props){
return <h1>{props.name}</h1>
}
What is wrong here? According to everything I've seen online and in the bootcamp instructions my syntax is correct and this should work.
Can anyone give some insight?
I found an answer to this. Including the CDN was only part of the fix. The second part is to include the following:
<script type="text/babel">//My react code</script>
Once that's done reloading the page works. I really should get more used to the native react ecosystem though.
I am learning ReactJS. I visited this in order to have some basic lessons. After going through first lesson, I could write following code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Hello world with date time in ReactJS</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.2.1/react.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.2.1/react-dom.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.34/browser.min.js"></script>
</head>
<body>
<div id="root"></div>
<script type="text/jsx">
const element = <h1>Hello, world</h1>;
ReactDOM.render(
element,
document.getElementById('root')
);
</script>
</body>
</html>
But to my surprise, it is working here but not on my computer or at my fiddle here. Can you please show me why my code is not working? Thanks.
Change text/jsx to text/babel . It works.
The problem is that you don't have JSX processing enabled.
If you're using jsFiddle you can move your JS code to JavaScript edit section and click on settings button in top-right corner of this section and then select Babel + JSX from language select.
I'm following a guide in a book about creating React apps. This is the very first example in the book and I copied it exactly as it was, but the page won't render.
<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8" />
<title> Pro MEAN Stack </title>
<script src=
"https://cdnjs.cloudflare.com/ajax/libs/react/15.2.1/react.js">
</script>
<script src=
"https://cdjns.cloudflare.com/ajax/libs/react/15.2.1/react-dom.js">
</script>
<script src=
"https://cdjns.cloudflare.com/ajax/libs/babel-core/5.8.23/browser.min.js">
</script>
</head>
<body>
<div id="contents"></div> <!-- this is where the component will appear -->
<script type="text/babel">
var contentNode = document.getElementById('content');
var component = <h1> Hello World </h1>; // A simple JSX component
ReactDOM.render(component, contentNode); // Render the conponent
</script>
</body>
</html>
Here's what the console says,
react-dom.js Failed to load resource: net::ERR_NAME_NOT_RESOLVED
browser.min.js Failed to load resource: net::ERR_NAME_NOT_RESOLVED
I'm not sure what to do at this point. I've never worked with React before
You should update your cdn links to valid ones, use these:
<script src="https://unpkg.com/react#15/dist/react.js"></script>
<script src="https://unpkg.com/react-dom#15/dist/react-dom.js"></script>
contents => content
The preferred way to use react is with some kind of module bundler like webpack. If webpack seems like a hustle you could use create-react-app to have a full react application up and running in no time. it's great.
Fix the links to cdnjs, you misspell it. Also you are creating a div with id "contents", then you select an element with id "content".
The following example works:
<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8" />
<title>ReactJS Hello World</title>
<script src="https://unpkg.com/react#15/dist/react.js"></script>
<script src="https://unpkg.com/react-dom#15/dist/react-dom.js"></script>
<script src=
"https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.25.0/babel.min.js">
</script>
</head>
<body>
<div id="content"></div>
<script type="text/babel">
var contentNode = document.getElementById('content');
var component = <h1> Hello World </h1>; // A simple JSX component
ReactDOM.render(component, contentNode); // Render the conponent
</script>
</body>
</html>
References
Getting started with React the easy way | CodeUtopia
React without build steps - Babel Standalone
Actualize | Anyone Can Learn To Code
just began to learn React and here are my very simple JSX and HTML files. I don't see any error in Console (Chrome) when I run it from my http-server. However the button Im expecting to see won't show in the browser. I'm not sure why it does not and what is missing.
Can anyone please help? Also why should we specify type=text/babel" in the tag? If I don't do this, I get an error (unexpected syntax <) in console.
Thanks!
Prem
HTML Code:
<html>
<head>
<title>
!My first React JS Component!
</title>
</head>
<body>
<div id="root"></div>
<script src="react.js"></script>
<script src="script.jsx" type="text/babel"></script>
</body>
</html>
my JSX File:
var Button = React.createClass({
render: function () {
return (
<button> Go! </button>
)
}
});
ReactDOM.render(<Button />, document.getElementById("root"));
You cannot just include the jsx in your site like that - it won't work :)
You need to transpile your jsx via a tool like Webpack.
The official documentation really is excellent and easy to understand, and it should explain how you setup a basic environment.
Also, there are dozens of tutorials on this, but here's a free one that I found helpful and easy to understand on youtube:
React + Redux + Webpack (Feel free to skip the redux part for a starter - really just a popular addon to React for managing state, which you can expand upon later)
For good measure, something like this should work:
<html>
<head>
<meta charset="UTF-8"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.23/browser.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.7/react.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.7/react-dom.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/babel" src="app.jsx"></script>
</body>
</html>
App.jsx:
ReactDOM.render(
<h1>Hello React!</h1>,
document.getElementById('app')
);
I'm going through some starter React.js courses to become more familiar with React, and the ES6 format. Unfortunately, the courses were created during 0.13 when the JSX Transformer was available, and I do not want to setup a node.js environment with each and every exercise file. It also seems that babel-browser was discontinued, and babel-standalone needs much more than a type in the script properties to compile, so neither seems to be a solution (Unless I misunderstood standalone).
Is there anything out there that handle transforms as simply as the JSX Transformer once did?
Thanks in advance!
The react site tutorial (http://facebook.github.io/react/docs/tutorial.html) seems to use babel dynamically.
<!-- index.html -->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>React Tutorial</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.7/react.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.7/react-dom.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.23/browser.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/marked/0.3.2/marked.min.js"></script>
</head>
<body>
<div id="content"></div>
<script type="text/babel" src="scripts/example.js"></script>
<script type="text/babel">
// To get started with this tutorial running your own code, simply remove
// the script tag loading scripts/example.js and start writing code here.
</script>
</body>
</html>