How to make function component from widget in next.js - javascript

So i want to use following html widget in my next.js app to verify user identities for my service. I have a problem with next.js not using the functions inside the script tag of html when i try to return it from function component. It doesn't even higlight it as a code.
So here is the html widget:
<!doctype html>
<html>
<head>
<!-- BLOCKPASS WIDGET SCRIPT -->
<script src="https://cdn.blockpass.org/widget/scripts/release/3.0.0/blockpass-kyc-connect.prod.js"></script>
</head>
<body>
<button id="blockpass-kyc-connect">Connect with Blockpass</button>
<script>
const blockpass = new BlockpassKYCConnect(
'my_client_id',
{
env: 'prod',
local_user_id: Date.now()
})
blockpass.startKYCConnect()
blockpass.on('KYCConnectSuccess', () => {
//add code that will trigger when data have been sent. ex:
//alert('Success!')
})
blockpass.on('KYCConnectClose', () => {
//add code that will trigger when the workflow is finished. ex:
//alert('Finished!')
})
blockpass.on('KYCConnectCancel', () => {
//add code that will trigger when the workflow is aborted. ex:
//alert('Cancelled!')
})
</script>
</body>
</html>
And i would like to make react component out of it. i was trying to implement it using the function component, to make it further reusable:
import React from 'react';
import Head from 'next/head';
export default function Blockpass () {
return (
<Head>
<!-- BLOCKPASS WIDGET SCRIPT -->
<script src="https://cdn.blockpass.org/widget/scripts/release/3.0.0/blockpass-kyc-connect.prod.js"></script>
</Head>
<body>
<button id="blockpass-kyc-connect">Connect with Blockpass</button>
<script>
const blockpass = new BlockpassKYCConnect(
'my_client_id',
{
env: 'prod',
local_user_id: Date.now()
})
blockpass.startKYCConnect()
blockpass.on('KYCConnectSuccess', () => {
//add code that will trigger when data have been sent. ex:
//alert('Success!')
})
blockpass.on('KYCConnectClose', () => {
//add code that will trigger when the workflow is finished. ex:
//alert('Finished!')
})
blockpass.on('KYCConnectCancel', () => {
//add code that will trigger when the workflow is aborted. ex:
//alert('Cancelled!')
})
</script>
</body>
)
}
unfortunately this doesn't seem to work for next.js, as the content of <script> tag is not recognized. How can i make this html scripts to work inside my next.js/react/jsx app.

Related

How to listen to a svelte event in a HTML page?

I have a simple Svelte button component as follows.
<script lang="ts">
import { createEventDispatcher } from 'svelte';
import { idGenerator } from '../utils/helpers';
export let id = idGenerator();
export let label = 'Click';
export let styleClass: string = '';
const dispatch = createEventDispatcher();
const calculatedClasses = '...'
const buttonClicked = $event => {
console.log('TARGET', $event); // This console is outputting the click event.
dispatch('message', {text: 'Hello'});
}
</script>
<button on:click={buttonClicked} class={calculatedClasses()} id={id}>
{label}
</button>
<svelte:options tag="aurora-button"></svelte:options>
The main.ts is as follows:
export * from './lib/Button.svelte'
I want to listen to the clicked event of the button in the index.html file, which is as follows:
<body>
<script type="module" src="/src/main.ts"></script>
<aurora-button size="large" type="success" on:message="clicked()"></aurora-button>
<script>
function clicked($ev) {
console.log('EV', $ev);
}
</script>
</body>
I'm not able to listen to the event sent from Svelte component in the html file. Am I not doing it right? The answers I've been seeing online are the one's which are using Svelte component using inside another Svelte component.
In the browser, I'm getting <aurora-button> was created with unknown prop 'on:message'.
You cannot use Svelte syntax in plain HTML.
on:... is just syntactic sugar for addEventListener. So you could do something like:
<script type="module">
document.querySelector('aurora-button')
.addEventListener('message', e => console.log(e));
</script>
(I am not entirely sure about the initialization timeline for custom elements generated by Svelte, it might be important that the element is registered before adding the event listener, hence the type="module" to make it run after the component code.)

How to export a React component as an embeddable script tag in vanilla HTML,CSS and JS

Imagine I have the following React Component
import { useEffect } from "react"
export default function AwesomeHelloWorld(props) {
useEffect(() => {
let targetDiv = document.getElementById("hello-world-component-will-use-this-after-load");
if (targetDiv) {
//Do something with retrieved div
}
}, []);
return (
<div>Hello World from a React Component</div>
)
}
How can I build it into a single helloworld.js file such that someone can easily import the script into a regular html <script/> tag for use like this
<script async type="text/javascript" src="./helloworld.js"/>
Then inside their html body, they will have a div that the generated script above will act on after page load like this
<div id="hello-world-component-will-use-this-after-load"/>
Thank you

Ensure asynchronous loading of files and execution of functions

I'm taking over a website by V2 Docusaurus.
One particularity of our website is that we need to load office.js and css-vars-ponyfill.min.js, and run some functions in patches.js in the very beginning. So the previous developer decided to use the following approach.
In every .mdx.md page, he wrapped the content by a component MainWrapper:
<MainWrapper>
... ...
Real content
... ...
</MainWrapper>
MainWrapper/index.js is defined as follows
import React from 'react';
import Head from '#docusaurus/Head';
function MainWrapper(props) {
return (<>
<Head>
<script
src="/lib/patches.js"
onload="(function(){console.log('patches.js has been fully loaded')}).call(this)" >
</script>
<script async defer
src='https://unpkg.com/css-vars-ponyfill#2/dist/css-vars-ponyfill.min.js'
onload="(function(){console.log('css-vars-ponyfill.min.js has been fully loaded'); onCssVarsPonyfillLoad();}).call(this)">
</script>
<script async defer
src='https://appsforoffice.microsoft.com/lib/1/hosted/office.js'
onload="(function(){console.log('office.js has been fully loaded'); onOfficejsLoad();}).call(this)">
</script>
</Head>
{props.children}
</>)
}
export default MainWrapper;
lib/Patches.js contains real operations:
var pushStateRef = history.pushState;
var replaceStateRef = history.replaceState;
console.log("already inside patches.js")
console.log("history.pushSate and replaceState have been saved")
function patch() {
if (!history.pushState) {
history.pushState = pushStateRef;
history.replaceState = replaceStateRef;
console.log("history.pushState and replaceState have been set back")
};
}
... ...
function onCssVarsPonyfillLoad() {
console.log("already inside patches.js > onCssVarsPonyfillLoad()")
... ...
}
function onOfficejsLoad() {
Office.onReady(function () {
console.log("already inside Office.onReady");
patch();
})
}
My tests show that, sometimes, this implementation can ensure loading patches.js before office.js and css-vars-ponyfill.min.js as <script async defer do. However, sometimes, this order cannot be ensured:
#docusarus/Head uses react-helmet. Does anyone know how to fix this loading order problem? What I want is loading patches.js before anything else, is there any workaround?
One workaround is to just put the whole code of patches.js inside <script>... ...</script> before the other files as follows:
import React from 'react';
import Head from '#docusaurus/Head';
import CssvarsWrapper from '../CssvarsWrapper';
import OfficejsWrapper from '../OfficejsWrapper';
class MainWrapper extends React.Component {
render() {
return (
<>
<Head>
<script>{`
console.log("begin patches")
... ... // the body of patches.js
`}</script>
<script async defer
src='https://unpkg.com/css-vars-ponyfill#2/dist/css-vars-ponyfill.min.js'
onload="(function(){console.log('css-vars-ponyfill.min.js has been fully loaded'); onCssVarsPonyfillLoad();}).call(this)">
</script>
<script async defer
src='https://appsforoffice.microsoft.com/lib/1/hosted/office.js'
onload="(function(){console.log('office.js has been fully loaded'); onOfficejsLoad();}).call(this)">
</script>
</Head>
{this.props.children}
</>
)
}
}
export default MainWrapper;

Adding React to an existing page and getting URL parameter inside .js

Based on official how to:
Add React to Website at https://reactjs.org/docs/add-react-to-a-website.html
I created test.html with content:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Add React in One Minute</title>
</head>
<body>
<h2>Add React in One Minute</h2>
<p>This page demonstrates using React with no build tooling.</p>
<p>React is loaded as a script tag.</p>
<!-- We will put our React component inside this div. -->
<div id="like_button_container"></div>
<!-- Load React. -->
<!-- Note: when deploying, replace "development.js" with "production.min.js". -->
<script src="https://unpkg.com/react#16/umd/react.development.js" crossorigin></script>
<script src="https://unpkg.com/react-dom#16/umd/react-dom.development.js" crossorigin></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<!-- Load our React component. -->
<script src="test.js"></script>
</body>
</html>
And test.js:
'use strict';
const e = React.createElement;
class LikeButton extends React.Component {
constructor(props) {
super(props);
this.state = { liked: false };
}
componentDidMount() {
axios.get(`http://localhost:4000/api/v1/cars`)
.then(result => {
console.log(result.data[0].make);
})
}
render() {
if (this.state.liked) {
return 'You liked this.';
}
return e(
'button',
{ onClick: () => this.setState({ liked: true }) },
'Like'
);
}
}
const domContainer = document.querySelector('#like_button_container');
ReactDOM.render(e(LikeButton), domContainer);
The code above is working well.
I'm able to press Like button and see the change, also able to use libraries such as Axios.
Now I want to open http://localhost/test.html?param1=111&param2=222 and get these param1 and param2 variables inside test.js - React. Is that possible? How to achieve this?
Many thanks
Just as you perform a fetch in ComponentDidMount, you can check query params in the same lifecycle event. Building on the link shared by #Olian04, here's how that'd look:
componentDidMount() {
const urlParams = new URLSearchParams(window.location.search);
if (urlParams.has("param1")) {
console.log(urlParams.get("param1"));
} else {
console.log("param1 was not found");
}
if (urlParams.has("param2")) {
console.log(urlParams.get("param2"));
} else {
console.log("param2 was not found");
}
}

Adding script tag to React/JSX

I have a relatively straightforward issue of trying to add inline scripting to a React component. What I have so far:
'use strict';
import '../../styles/pages/people.scss';
import React, { Component } from 'react';
import DocumentTitle from 'react-document-title';
import { prefix } from '../../core/util';
export default class extends Component {
render() {
return (
<DocumentTitle title="People">
<article className={[prefix('people'), prefix('people', 'index')].join(' ')}>
<h1 className="tk-brandon-grotesque">People</h1>
<script src="https://use.typekit.net/foobar.js"></script>
<script dangerouslySetInnerHTML={{__html: 'try{Typekit.load({ async: true });}catch(e){}'}}></script>
</article>
</DocumentTitle>
);
}
};
I have also tried:
<script src="https://use.typekit.net/foobar.js"></script>
<script>try{Typekit.load({ async: true });}catch(e){}</script>
Neither approach seems to execute the desired script. I'm guessing it's a simple thing I'm missing. Can anybody help out?
PS: Ignore the foobar, I have a real id actually in use that I didn't feel like sharing.
Edit: Things change fast and this is outdated - see update
Do you want to fetch and execute the script again and again, every time this component is rendered, or just once when this component is mounted into the DOM?
Perhaps try something like this:
componentDidMount () {
const script = document.createElement("script");
script.src = "https://use.typekit.net/foobar.js";
script.async = true;
document.body.appendChild(script);
}
However, this is only really helpful if the script you want to load isn't available as a module/package. First, I would always:
Look for the package on npm
Download and install the package in my project (npm install typekit)
import the package where I need it (import Typekit from 'typekit';)
This is likely how you installed the packages react and react-document-title from your example, and there is a Typekit package available on npm.
Update:
Now that we have hooks, a better approach might be to use useEffect like so:
useEffect(() => {
const script = document.createElement('script');
script.src = "https://use.typekit.net/foobar.js";
script.async = true;
document.body.appendChild(script);
return () => {
document.body.removeChild(script);
}
}, []);
Which makes it a great candidate for a custom hook (eg: hooks/useScript.js):
import { useEffect } from 'react';
const useScript = url => {
useEffect(() => {
const script = document.createElement('script');
script.src = url;
script.async = true;
document.body.appendChild(script);
return () => {
document.body.removeChild(script);
}
}, [url]);
};
export default useScript;
Which can be used like so:
import useScript from 'hooks/useScript';
const MyComponent = props => {
useScript('https://use.typekit.net/foobar.js');
// rest of your component
}
My favorite way is to use React Helmet – it's a component that allows for easy manipulation of the document head in a way you're probably already used to.
e.g.
import React from "react";
import {Helmet} from "react-helmet";
class Application extends React.Component {
render () {
return (
<div className="application">
<Helmet>
<script src="https://use.typekit.net/foobar.js"></script>
<script>try{Typekit.load({ async: true });}catch(e){}</script>
</Helmet>
...
</div>
);
}
};
https://github.com/nfl/react-helmet
Further to the answers above you can do this:
import React from 'react';
export default class Test extends React.Component {
constructor(props) {
super(props);
}
componentDidMount() {
const s = document.createElement('script');
s.type = 'text/javascript';
s.async = true;
s.innerHTML = "document.write('This is output by document.write()!')";
this.instance.appendChild(s);
}
render() {
return <div ref={el => (this.instance = el)} />;
}
}
The div is bound to this and the script is injected into it.
Demo can be found on codesandbox.io
This answer explains the why behind this behavior.
Any approach to render the script tag doesn't work as expected:
Using the script tag for external scripts
Using dangerouslySetInnerHTML
Why
React DOM (the renderer for react on web) uses createElement calls to render JSX into DOM elements.
createElement uses the innerHTML DOM API to finally add these to the DOM (see code in React source). innerHTML does not execute script tag added as a security consideration. And this is the reason why in turn rendering script tags in React doesn't work as expected.
For how to use script tags in React check some other answers on this page.
If you need to have <script> block in SSR (server-side rendering), an approach with componentDidMount will not work.
You can use react-safe library instead.
The code in React will be:
import Safe from "react-safe"
// in render
<Safe.script src="https://use.typekit.net/foobar.js"></Safe.script>
<Safe.script>{
`try{Typekit.load({ async: true });}catch(e){}`
}
</Safe.script>
The answer Alex Mcmillan provided helped me the most but didn't quite work for a more complex script tag.
I slightly tweaked his answer to come up with a solution for a long tag with various functions that was additionally already setting "src".
(For my use case the script needed to live in head which is reflected here as well):
componentWillMount () {
const script = document.createElement("script");
const scriptText = document.createTextNode("complex script with functions i.e. everything that would go inside the script tags");
script.appendChild(scriptText);
document.head.appendChild(script);
}
I tried to edit the accepted answer by #Alex McMillan but it won't let me so heres a separate answer where your able to get the value of the library your loading in. A very important distinction that people asked for and I needed for my implementation with stripe.js.
useScript.js
import { useState, useEffect } from 'react'
export const useScript = (url, name) => {
const [lib, setLib] = useState({})
useEffect(() => {
const script = document.createElement('script')
script.src = url
script.async = true
script.onload = () => setLib({ [name]: window[name] })
document.body.appendChild(script)
return () => {
document.body.removeChild(script)
}
}, [url])
return lib
}
usage looks like
const PaymentCard = (props) => {
const { Stripe } = useScript('https://js.stripe.com/v2/', 'Stripe')
}
NOTE: Saving the library inside an object because often times the library is a function and React will execute the function when storing in state to check for changes -- which will break libs (like Stripe) that expect to be called with specific args -- so we store that in an object to hide that from React and protect library functions from being called.
You can also use react helmet
import React from "react";
import {Helmet} from "react-helmet";
class Application extends React.Component {
render () {
return (
<div className="application">
<Helmet>
<meta charSet="utf-8" />
<title>My Title</title>
<link rel="canonical" href="http://example.com/example" />
<script src="/path/to/resource.js" type="text/javascript" />
</Helmet>
...
</div>
);
}
};
Helmet takes plain HTML tags and outputs plain HTML tags. It's dead simple, and React beginner friendly.
I created a React component for this specific case: https://github.com/coreyleelarson/react-typekit
Just need to pass in your Typekit Kit ID as a prop and you're good to go.
import React from 'react';
import Typekit from 'react-typekit';
const HtmlLayout = () => (
<html>
<body>
<h1>My Example React Component</h1>
<Typekit kitId="abc123" />
</body>
</html>
);
export default HtmlLayout;
There is a very nice workaround using Range.createContextualFragment.
/**
* Like React's dangerouslySetInnerHTML, but also with JS evaluation.
* Usage:
* <div ref={setDangerousHtml.bind(null, html)}/>
*/
function setDangerousHtml(html, el) {
if(el === null) return;
const range = document.createRange();
range.selectNodeContents(el);
range.deleteContents();
el.appendChild(range.createContextualFragment(html));
}
This works for arbitrary HTML and also retains context information such as document.currentScript.
Here is how I was finally able to add two external JavaScript files in my React JS code:
These are the steps I followed.
Step 1:
I installed React-Helmet using npm i react-helmet from the terminal while inside my react-app folder path.
Step 2:
I then added import {Helmet} from "react-helmet"; header in my code.
Step 3:
Finally, in my code this is
how I added the external JS files using Helment
<Helmet>
<script src = "path/to/my/js/file1.js" type = "text/javascript" />
<script src = "path/to/my/js/file2.js" type = "text/javascript" />
</Helmet>
You can use npm postscribe to load script in react component
postscribe('#mydiv', '<script src="https://use.typekit.net/foobar.js"></script>')
You can find best answer at the following link:
https://cleverbeagle.com/blog/articles/tutorial-how-to-load-third-party-scripts-dynamically-in-javascript
const loadDynamicScript = (callback) => {
const existingScript = document.getElementById('scriptId');
if (!existingScript) {
const script = document.createElement('script');
script.src = 'url'; // URL for the third-party library being loaded.
script.id = 'libraryName'; // e.g., googleMaps or stripe
document.body.appendChild(script);
script.onload = () => {
if (callback) callback();
};
}
if (existingScript && callback) callback();
};
To add script tag or code in head tag <head>, use react-helmet package. it is light and have good documentation.
To add Js code in script tag inside body,
function htmlDecode(html) {
return html.replace(/&([a-z]+);/ig, (match, entity) => {
const entities = { amp: '&', apos: '\'', gt: '>', lt: '<', nbsp: '\xa0', quot: '"' };
entity = entity.toLowerCase();
if (entities.hasOwnProperty(entity)) {
return entities[entity];
}
return match;
});
}
render() {
const scriptCode = `<script type="text/javascript">
{(function() {
window.hello={
FIRST_NAME: 'firstName',
LAST_NAME: 'lastName',
};
})()}
</script>`
return(
<div dangerouslySetInnerHTML={{ __html: this.htmlDecode(scriptCode) }} />;
);
}
this code can be tested by console.log(windows.hello)
Very similar to other answers just using default values to clean up undefined checks
import { useEffect } from 'react'
const useScript = (url, selector = 'body', async = true) => {
useEffect(() => {
const element = document.querySelector(selector)
const script = document.createElement('script')
script.src = url
script.async = async
element.appendChild(script)
return () => {
element.removeChild(script)
}
}, [url])
}
export default useScript
usage
useScript('/path/to/local/script.js') // async on body
useScript('https://path/to/remote/script.js', 'html') // async on html
useScript('/path/to/local/script.js', 'html', false) // not async on html.. e.g. this will block
According to Alex McMillan's solution, I have the following adaptation.
My own environment: React 16.8+, next v9+
// add a custom component named Script
// hooks/Script.js
import { useEffect } from 'react'
// react-helmet don't guarantee the scripts execution order
export default function Script(props) {
// Ruels: alwasy use effect at the top level and from React Functions
useEffect(() => {
const script = document.createElement('script')
// src, async, onload
Object.assign(script, props)
let { parent='body' } = props
let parentNode = document.querySelector(parent)
parentNode.appendChild(script)
return () => {
parentNode.removeChild(script)
}
} )
return null // Return null is necessary for the moment.
}
// Use the custom compoennt, just import it and substitute the old lower case <script> tag with the custom camel case <Script> tag would suffice.
// index.js
import Script from "../hooks/Script";
<Fragment>
{/* Google Map */}
<div ref={el => this.el = el} className="gmap"></div>
{/* Old html script */}
{/*<script type="text/javascript" src="http://maps.google.com/maps/api/js"></script>*/}
{/* new custom Script component */}
<Script async={false} type="text/javascript" src='http://maps.google.com/maps/api/js' />
</Fragment>
A bit late to the party but I decided to create my own one after looking at #Alex Macmillan answers and that was by passing two extra parameters; the position in which to place the scripts such as or and setting up the async to true/false, here it is:
import { useEffect } from 'react';
const useScript = (url, position, async) => {
useEffect(() => {
const placement = document.querySelector(position);
const script = document.createElement('script');
script.src = url;
script.async = typeof async === 'undefined' ? true : async;
placement.appendChild(script);
return () => {
placement.removeChild(script);
};
}, [url]);
};
export default useScript;
The way to call it is exactly the same as shown in the accepted answer of this post but with two extra(again) parameters:
// First string is your URL
// Second string can be head or body
// Third parameter is true or false.
useScript("string", "string", bool);
I recently faced the issue,
Tried multiple solutions given here, at last sattled with iframe,
Iframe seems to work seamlessly if it you are trying to integrate a js plugin on a specific screen
<iframe
id="xxx"
title="xxx"
width="xxx"
height="xxx"
frameBorder="value"
allowTransparency
srcDoc={`
<!doctype html>
<html>
<head>
<title>Chat bot</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
</head>
<body style="width:100%">
<script type="text/javascript">
......
</script>
</body>
</html>
`}
/>
componentDidMount() {
const head = document.querySelector("head");
const script = document.createElement("script");
script.setAttribute(
"src",
"https://assets.calendly.com/assets/external/widget.js"
);
head.appendChild(script);
}
just add in body in html file
<script src="https://unpkg.com/react-dom#17/umd/react-dom.development.js" crossorigin></script>
Honestly, for React - don't bother with messing around adding <script> tags to your header. It's a pain in the ass to get a callback when they have loaded fully. Instead, use a package like #charlietango/useScript to load the script when you need it and get a status update when it is completed.
Example usage:
import React from 'react'
import useScript, { ScriptStatus } from '#charlietango/use-script'
const Component = () => {
const [ready, status] = useScript('https://api.google.com/api.js')
if (status === ScriptStatus.ERROR) {
return <div>Failed to load Google API</div>
}
return <div>Google API Ready: {ready}</div>
}
export default Component
PS. If you're using redux to tell other components when your script has loaded, and are using redux-persist like I was, don't forget to include a modifier on your redux-persist setup that always sets the script loaded redux value to false in the redux backup.
for multiple scripts, use this
var loadScript = function(src) {
var tag = document.createElement('script');
tag.async = false;
tag.src = src;
document.getElementsByTagName('body').appendChild(tag);
}
loadScript('//cdnjs.com/some/library.js')
loadScript('//cdnjs.com/some/other/library.js')
For a more complete useScript implementation that supports loading status and error handling, check out this from useHooks.
Usage
function App() {
const status = useScript(
"https://pm28k14qlj.codesandbox.io/test-external-script.js"
);
return (
<div>
<div>
Script status: <b>{status}</b>
</div>
{status === "ready" && (
<div>
Script function call response: <b>{TEST_SCRIPT.start()}</b>
</div>
)}
</div>
);
}
Hook
function useScript(src) {
// Keep track of script status ("idle", "loading", "ready", "error")
const [status, setStatus] = useState(src ? "loading" : "idle");
useEffect(
() => {
// Allow falsy src value if waiting on other data needed for
// constructing the script URL passed to this hook.
if (!src) {
setStatus("idle");
return;
}
// Fetch existing script element by src
// It may have been added by another intance of this hook
let script = document.querySelector(`script[src="${src}"]`);
if (!script) {
// Create script
script = document.createElement("script");
script.src = src;
script.async = true;
script.setAttribute("data-status", "loading");
// Add script to document body
document.body.appendChild(script);
// Store status in attribute on script
// This can be read by other instances of this hook
const setAttributeFromEvent = (event) => {
script.setAttribute(
"data-status",
event.type === "load" ? "ready" : "error"
);
};
script.addEventListener("load", setAttributeFromEvent);
script.addEventListener("error", setAttributeFromEvent);
} else {
// Grab existing script status from attribute and set to state.
setStatus(script.getAttribute("data-status"));
}
// Script event handler to update status in state
// Note: Even if the script already exists we still need to add
// event handlers to update the state for *this* hook instance.
const setStateFromEvent = (event) => {
setStatus(event.type === "load" ? "ready" : "error");
};
// Add event listeners
script.addEventListener("load", setStateFromEvent);
script.addEventListener("error", setStateFromEvent);
// Remove event listeners on cleanup
return () => {
if (script) {
script.removeEventListener("load", setStateFromEvent);
script.removeEventListener("error", setStateFromEvent);
}
};
},
[src] // Only re-run effect if script src changes
);
return status;
}
I had raw html string with javascript/Jquery
i installed npm library dangerously-set-html-content
npm i dangerously-set-html-content
import InnerHTML from 'dangerously-set-html-content'
<div>
<InnerHTML html={html}/>
</div>
or
import InnerHTML from 'dangerously-set-html-content'
const renderhtml=`<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><title> is not defined</title>$(document).ready(function(){ $("button").click(function(){ alert("jQuery is working perfectly."); }); });</script></head><body> <button type="button">Test jQuery Code</button></body></html>`
<div>
<InnerHTML html={renderhtml}/>
</div>
Make sure you add jquery cdn to public/index.html file
<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous" async="true" ></script>
You could try to use the following:
Make sure you trust the script
<script>{`
function myFunction(index, row) {
return index;
}
`}
</script>
You have to create a component for this script, you call this component as a standard ES6 script tag
'use strict';
import '../../styles/pages/people.scss';
import React, { Component } from 'react';
import DocumentTitle from 'react-document-title';
import { prefix } from '../../core/util';
export default class extends Component {
render() {
return (
<DocumentTitle title="People">
<article className={[prefix('people'), prefix('people', 'index')].join(' ')}>
<h1 className="tk-brandon-grotesque">People</h1>
</article>
</DocumentTitle>
);
class Component extend Index.App {
<script src="https://use.typekit.net/foobar.js" />
<script dangerouslySetInnerHTML={{__html: 'try{Typekit.load({ async: true });}catch(e){}'}}/>
}
}
};
Solution depends on scenario. Like in my case, I had to load a calendly embed inside a react component.
Calendly looks for a div and reads from it's data-url attribute and loads an iframe inside the said div.
It is all good when you first load the page: first, div with data-url is rendered. Then calendly script is added to body. Browser downloads and evaluates it and we all go home happy.
Problem comes when you navigate away and then come back into the page. This time the script is still in body and browser doesn't re-download & re-evaluate it.
Fix:
On componentWillUnmount find and remove the script element. Then on re mount, repeat the above steps.
Enter $.getScript. It is a nifty jquery helper that takes a script URI and a success callback. Once the script it loaded, it evaluates it and fires your success callback. All I have to do is in my componentDidMount $.getScript(url). My render method already has the calendly div. And it works smooth.
I saw the same problem, until I found this package, quite easy to implement, I hope it works as it worked for me :)
https://github.com/gumgum/react-script-tag
import React from 'react';
import Script from '#gumgum/react-script-tag';
import './App.css';
function App() {
return (
<div >
<h1> Graphs</h1>
<div class="flourish-embed flourish-network" data-src="visualisation/8262420">
<Script src"your script"
</Script>
</div>
</div>
);
}
export default App;
You can put your script in an Html file before react is being called.

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