Develop Reference

How to display external <script> using div in Reactjs?

I am trying to learn how to display small widgets (for example plane tickets brower) onto my website built in Reactjs. The code that's supposed to work instantly according to the provider is as below ("just copy and paste into website"):
<div id="widget" data-widget="search" data-affiliate="873" data-campaign="873-"></div>
<script src="https://widget.wakacje.pl/v2/public/js/widgets/search-widget.js?c=widget" async></script>
I tried to Google for answers and my idea atm looks like this:
function OfferBrowser() {
const script = document.createElement("script");
script.src = "https://widget.wakacje.pl/v2/public/js/widgets/search-widget.js?c=widget";
script.async = true;
return(
<div id="widget" data-widget="search" data-affiliate="873" data-campaign="873-"></div>
)
}
The other this I tried was also to put {script} into the tag like this, but it doesn't work as well.
<div id="widget" data-widget="search" data-affiliate="873" data-campaign="873-">{script}</div>
How should I approach this?

While I don't know React, I believe I have found the problem with the second chunk of code. You have created a script element, but have not added it to the DOM, and therefore it's not loading the script.
After looking around for a bot, I believe I've found a fix.
const script = document.createElement("script");
script.src = "https://widget.wakacje.pl/v2/public/js/widgets/search-widget.js?c=widget";
script.async = true;
// append the script tag to the body
document.body.appendChild(script);
I think this needs to run after the component is mounted, so that the div is in the DOM.

Loading javascript import into React application

Edit
I decided to try adding the script tags to the index.html file and conditionally rendering them.
<script type="text/javascript">
var $show_stuff = 'no';
var $add_stuff = 'yes';
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'https://www.example.com/includes.php?stuff=true';
document.getElementById('feed').appendChild(script);
</script>
Then in the component I want the feed to show up I did this,
<div id="credit-feed" />
I also tried conditionally rendering the script tag in the index.html file like this,
if(window.location.href === "localhost:3000/my/path" ) { script tag... }
These both do not work as well. The script tag does not show up in the div in the first example and the second does show the script tag but it does not render.
But, when I add the script tag like normal to the head of the HTML file, the feed renders as I would expect.
Background
We do business with a company that provides us a Javascript script tag which appends the data from it's response into the body of our web page. We have had a PHP site for the past 8 years without problems but now that we are switching to React, we can not figure out the correct way to use this tag in the component it will live.
Problem
When we add the script tag to the React component, it does not append the correct data to the page. In fact it does not append any data to the page.
Example
I have tried to load the script tag like normal,
<script type="text/javascript">
var $somevar = "false";
var $addjquery = "yes";
</script>
<script
type="text/javascript" src="https://www.example.com/do/deef.php?feedtype=all ">
</script>
Another way I have tried in the React component,
componentWillMount() {
const script = document.createElement('script');
const $somevar = 'false';
const $addjquery = 'yes';
script.src = 'https://www.example.com/get/feed.php?&data=all';
script.async = true;
document.body.appendChild(script);
}
Question
What is the correct way to load the script tag so it will append the data to my application?

Usually with a React app, you will have an index.html file that contains the React component. You should put the <script> reference inside the html file. So I would definitely use the first approach you mention. If it's not loading, can you check the browser inspector and find out what kind of error you are getting? For one thing, you should remove the empty white space from the URL. That could be the issue.

Inject script globally in React

I have the following bit of code in my global index.js file in React:
const script = document.createElement('script');
script.src = 'assets/js/custom.js';
script.async = true;
document.body.appendChild(script);
This injects a script tag to the body of the dom. This doesn't quite work as expected, it appends the file but it doesn't trigger any of the jQuery code in the file.
However if I put the exact same script in a componentDidMount function of one of my components it works fine.
I don't want to add this to each and every component, How can I do this globally?
Thanks

Javascript onclick event call to a webservice

Is it possible to call the below script on button click?
<script type="text/javascript" src="https://www.mypaga.com/paga-web/epay/ePay-button.paga?k=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx&e=false"> </script>
I want to use a custom button.

It depends on the logic in script but basically yes you can. See example code below. Then you have to add click event to your button with this function.
function addscript() {
var head = document.getElementsByTagName("head")[0];
script = document.createElement('script');
script.id = 'uploadScript';
script.type = 'text/javascript';
script.src = "upload.js";
head.appendChild(script);
}

It appears you are using the Paga Service api. If you plan on submitting with your custom button, then after the script is loaded, you need to trigger $('#__paga_btn').click() which is can be found from Using the chrome dev tools to inspect element and get the id of the link. #__paga_btn, NB, the script is required to be loaded after the form element. Something like this would suffice for your case
function addscript() {
var head = document.getElementsByClassName("pagalink")[0];
script = document.createElement('script');
script.id = 'uploadScript';
script.type = 'text/javascript';
script.src = "https://www.mypaga.com/paga-web/epay/ePay-button.paga?k=xxxxxxxxxxxxxxxxxxxx&e=false&layout=V";
head.appendChild(script); //Figure out a way to detect when script has loaded.
$('#__paga_btn').click(); // needs to be called after the script as loaded to submit the form.
}
the pagalink node need to be placed below the form element on the page. Since that is where you would actually put the script. The script isn't really customizable since it modifies the dom on load.

Adding dynamic script resource to a page

In the application I'm developing I need to include some javascript files dynamically after the page is loaded. How to acheive this?

You can load a script resource dynamically using the following function
function loadScript(src){
var script = document.createElement("script");
script.src = src;
document.body.appendChild(script);
}
Here we are creating a script element dynamically and add that to the DOM structure of the page.
If you are using jQuery, you can use the getScript() method to fetch a script resource dynamically.

Add dynamic script resource to a page
function loadScript(src){
var script = document.createElement("script");
script.src = src;
document.body.appendChild(script);
}