Just wondering what the procedure is loading an external script into a component which renders HTML?
I call a script, which returns me an unordered list which i want to use for an image carousel it looks something like this but currently isn't working
this is what i have inside my render
return(
<Slick {...settings}>
<script
type="text/javascript"
src="https://some.external.script.js"
/>
<div
class="render-html-here-from-script"
/>
<script>
SomeScript.require(['xxx'], function(arg)
{arg.loadAll().done(function(embed) {
// code here gets list and binds above in div
})}
)
</script>
</Slick>
)
the above code works fine if I just copy/paste straight into a standard HTML page
Thanks
Related
I have a GatsbyJS site that I am working on where the main content source is a Wordpress install. One of the things I like to add to my sites is the ability to have placeholder areas in the site where I can control the content via the CMS. Usually I have a header_scripts area that goes at the bottom of the <head> tag, a body_scripts area that goes at the start of the <body> tag, and a footer_scripts area that goes at the bottom of the page <body>. With these three, I can usually integrate third-party add-ins pretty easily without having to do code deployments.
Sometimes I need to embed stylesheets, sometimes I need to embed script tags, and sometimes I need to throw in <meta> tags. Really the content could be anything. This data comes back as a raw string from my Wordpress GraphQL endpoint.
So now my question is, how do I get this content injected into my Gatsby site in the following places:
<html>
<head>
...
{header_scripts}
</head>
<body>
{body_scripts}
...
{footer_scripts}
</body>
</html>
I've found so far that I can just include the body_scripts and footer_scripts in a fairly regular manner in my Gatsby page template. In gatsby-node.js, I pass in the property values using the pageContext. It's kind of a bummer that they need to be wrapped in a <div /> tag, but they seem to work just fine.
import React from 'react'
export default class PageTemplate extends React.Component {
render = () => {
return (
<React.Fragment>
{this.props.pageContext.bodyScripts && (
<div dangerouslySetInnerHTML={{__html:this.props.pageContext.bodyScripts}} />
)}
{/* my page content here */}
{this.props.pageContext.footerScripts && (
<div dangerouslySetInnerHTML={{__html:this.props.pageContext.footerScripts}} />
)}
</React.Fragment>
)
}
}
Now for the real question. I am stumped on how to get the dynamic content from the header_scripts into the Gatsby server-side-rendering <head> tag. The closest thing I have found to being able to inject content into the head is to leverage the gatsby-ssr.js onRenderBody function. However, this seems to require pre-determined React component instances in order to function. I can't just pass it in plain raw string content and see the output in the page source:
export const onRenderBody = async ({
pathname,
setHeadComponents,
setHtmlAttributes,
setBodyAttributes,
setPreBodyComponents,
setPostBodyComponents,
setBodyProps
}, pluginOptions) => {
setHeadComponents(['<script>alert("hello");</script>'])
}
This results in an escaped string getting inserted into the <head> tag:
<html>
<head>
...
<script>alert("hello");</script>
</head>
<body>
...
</body>
</html>
I'm at a loss as to how to proceed. I can't just wrap my string in a <div /> tag like in the body because div tags can't go inside the head tag. I can't think of any head-capable HTML tags that would accept this kind of content.
The only idea I've had is to actually parse the string content into full React components. This seems daunting given the number of possible tags & formatting that I would need to support.
Am I going about this the wrong way? How can I get my arbitrary content into my Gatsby site's head tag?
It's a broad question and it will need some trials and errors to ensure that it's fully working without caveats in all scenarios but, among the things you've tried, you can add a few more options to the list to check which ones fit better.
Regarding the body_scripts and footer_scripts both can be inserted using the:
<div dangerouslySetInnerHTML={{__html:this.props.pageContext.footerScripts}} />
In any desired page or template. For the header_scripts and the meta tags (SEO), you can use the <Helmet> component. Basically, using this component, everything that is wrapped inside, it's becomes transpiled inside the <head> tag once compiled.
export default class PageTemplate extends React.Component {
render = () => {
return (
<React.Fragment>
<Helmet>
{this.props.pageContext.headerScripts && (
<div dangerouslySetInnerHTML={{__html:this.props.pageContext.headScripts}} />
)}
</Helmet>
{this.props.pageContext.bodyScripts && (
<div dangerouslySetInnerHTML={{__html:this.props.pageContext.bodyScripts}} />
)}
{/* my page content here */}
{this.props.pageContext.footerScripts && (
<div dangerouslySetInnerHTML={{__html:this.props.pageContext.footerScripts}} />
)}
</React.Fragment>
)
}
}
However, if the data comes from a CMS, it won't be available in the SSR yet, so, one easy thing you can do is to customize the outputted HTML (html.js) that Gatsby generates in each compilation. From the docs:
Customizing html.js is a workaround solution for when the use of the
appropriate APIs is not available in gatsby-ssr.js. Consider using
onRenderBody or onPreRenderHTML instead of the method above. As a
further consideration, customizing html.js is not supported within a
Gatsby Theme. Use the API methods mentioned instead.
Run:
cp .cache/default-html.js src/html.js
Or manually, copy the .cache/default-html.js file and paste it /src folder. There you can customize the final HTML.
I am trying to embed a public FB post into the main page of my application. I am following FB guide and it's pretty simple. It works when I do it in .html file, but doesn't with Next JS.
Basically, instructions are that you need to insert this right after the body opening tag
<div id="fb-root"></div>
<script async defer crossorigin="anonymous"
src="https://connect.facebook.net/en_US/sdk.js#xfbml=1&autoLogAppEvents=1&version=v9.0&appId={appId}" nonce={someNonce}"></script>
and then you put the other part wherever you want.
I even created a custom _document.js file and included this script, I can also see it in the browser. But the post does not get loaded.
Anyone had this kind of issue?
Assuming you already have the JS SDK loaded in your document, like you mentioned (you might also load the script on-demand via JavaScript if preferred).
// pages/_document
class MyDocument extends Document {
render() {
return (
<Html lang="en">
<!-- additional code -->
<body>
<!-- additional code -->
<script
async
defer
src="https://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v3.2"
/>
</body>
</Html>
);
}
}
You can then render a Facebook post inside one of your components with:
<div
className="fb-post"
data-href="https://www.facebook.com/20531316728/posts/10154009990506729/"
/>
For further details refer to the official Embedded Posts documentation.
I am looking for the best way to inject a dynamically built image as my background image. I can build the image and I can display it as a div but I want it as the background of my body.
<div className="App">
<mycomonent />
</div>
works but it is not what I want
<body styles="background-image: {mycomponent}"></body>
You can change using regular DOM object within React.
document.body.style.backgroundImage = `url("https://www.placecage.com/c/460/300")`;
Working Demo
I'm new to angularJS, When i use UIKit only its working fine (Yii2). When i use with angularJS the Javascript events like(tab, slider, dropdown, etc) not working.. I don't know what i have missed or is the any dependency i have to add it work this. This is my app.js code
var app = angular.module('nApp', [
'ui.router', //
'ngSanitize', // sanitize HTML
'ngAnimate', // CSS and JavaScript ng-animate
'ngRoute', // $routeProvider
'toaster', // toasterProvider
'mgcrea.ngStrap', // bs-navbar, data-match-route directives
]);
And my AppAsset.php file is like this,
public $css = [
'uikit/css/uikit.gradient.min.css',
];
public $js = [
'js/app.js',
'uikit/js/uikit.min.js',
];
public $depends = [
'yii\web\YiiAsset',
'frontend\assets\AngularAsset',
];
In AngularAsset.php I have loaded angular related files(css & js).
Please help me..
the reason you are having problems with integrating uikit components into your angularjs project is because uikit components like accordion or slider in your case, are instantiated the moment they are loaded. What this means is that if you place the slider.js file in the header of the first page you load, and your slider is in another html file not loaded yet, say users.html, then the slider.js file will not attach the component to your element in users.html.
If that doesn't clear things up, let me show you what I mean.
This is your index.html (the first html page you load).
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<!--loading uikit components in here will not work on other html files -->
</head>
<body data-ng-app="nApp">
<nav></nav>
<div class="container" data-ng-view>
<!--This is where the other html files will load in, like users.html -->
</div>
<footer></footer>
</body>
</html>
And this is users.html with an accordion component.
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/uikit/2.25.0/js/components/accordion.min.js"></script>
<!--This accordion will work-->
<div class="uk-accordion" data-uk-accordion="{collapse:false}">
<h3 class="uk-accordion-title">Title 1</h3>
<div class="uk-accordion-content">content one</div>
<h3 class="uk-accordion-title">Title 2</h3>
<div class="uk-accordion-content">content two</div>
<h3 class="uk-accordion-title">Title 3</h3>
<div class="uk-accordion-content">content three</div>
</div>
To elaborate, the accordion will work in users.html because the javascript file accordion.js is instantiated when users.html is loaded and so the component can attach to the respected element.
I hope this clears things up for you.
An other way is to say at UIkit, to make an 'watcher' on the dom
if you put data-uk-observe on the div.
Ui kit will be in place at this moment
Observe the DOM to auto-init new added components, e.g via AJAX.
If you inject dynamic HTML markup into the DOM via JavaScript, just add the data-uk-observe attribute to one of the parent elements to auto-initialize UIKit JavaScript components.
Usage
<div data-uk-observe>
<!-- inject your dynamic html here -->
</div>
Observe an element via JavaScript
UIkit.domObserve('#element', function(element) { /* apply on dom change within element */ })
Since AngularJS renders the HTML after the digest cycle, you have to re-render the UI component. Let's say for example for have the UIKit accordion:
<div id="myAccordion"
data-uk-accordion="{ showfirst: false }"
class="uk-accordion"
data-uk-observe>
Then, in the callback method from the controller for re-rendering the UI component you have to invoke:
UIkit.domObserve('#myAccordion', function (element) {
UIkit.component.boot('accordion');
UIkit.init(element);
});
I'm dealing with a content management system that needs to "inject" a reusable component into a page.
I want to inject the following component (html and javascript).
<script type="text/javascript">
if(typeof angular == 'undefined') {
document.write(unescape("%3Cscript type='text/javascript' src='/resources/scripts/lib/angular.min.js'%3E%3C/script%3E"));
document.write(unescape("%3Cscript type='text/javascript' src='/resources/scripts/pricing/app.js'%3E%3C/script%3E")); }
}
</script>
<div ng-app="pricing" ng-controller="PriceController as pc" ng-init="pc.getPrices('myprod', 'PER')">
Some text {{ pc.prices.msg["startdat tarief"] | jsDate }} .
More text {{ pc.prices.msg["einddat product"] | jsDate }}.
</div>
The component must be able to be injected multiple times on the page.
The problem is that the controller works fine, but only for the first injection.
This probably has something to do with that I am using the same app multiple times.
I am fairly new to angular.
How can I inject the same component multiple times?
Note that I am not able to init the app on a higher level. Because this would require the content manager to edit all pages, we juist want to inject a HTML component with javascript (i.e. the code snippet).
If you are able to add a unique ID to the module div you can manually bootstrap your angular app as follows:
function bootstrapAngular(id) {
angular.bootstrap(document.getElementById('module-' + id), ['app']);
}
angular.module('app', []).controller('sample', function ($scope) {
$scope.foo = 'bar';
});
bootstrapAngular(1);
bootstrapAngular(2);
bootstrapAngular(3);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div id="module-1">
<div ng-controller="sample">
{{ foo }}
</div>
</div>
<div id="module-2">
<div ng-controller="sample">
{{ foo }}
</div>
</div>
<div id="module-3">
<div ng-controller="sample">
{{ foo }}
</div>
</div>
You cannot have multiple ng-App directives on a single page. From the Angular.js documentation:
Only one AngularJS application can be auto-bootstrapped per HTML document. The first ngApp found in the document will be used to define the root element to auto-bootstrap as an application. To run multiple applications in an HTML document you must manually bootstrap them using angular.bootstrap instead. AngularJS applications cannot be nested within each other.
If placing ng-App higher in the tree isn't an option, you will have to re-write the components so that each component gets a unique angular.module() and when the component is injected, it will need to fire angular.bootstrap().