I am trying to add an external application Chameleon onto my react application and for that I have to add the javascript function to my application.
I only want it to be called in specific situations so I don't want to load it in my index.html. I tried adding it to the render function of my component as:
render() {
return(
<div>
<head>
<script type="text/javascript">/* Chameleon - better user onboarding */!function(t,n,o){var a="chmln",c="setup identify alias track clear set show on off custom help _data".split(" ");n[a]||(n[a]={}),n[a].accountToken=o,n[a].location=n.location.href.toString();for(var e=0;e<c.length;e++)!function(){var t=n[a][c[e]+"_a"]=[];n[a][c[e]]=function(){t.push(arguments)}}();var s=t.createElement("script");s.src="https://fast.trychameleon.com/messo/"+o+"/messo.min.js",s.async=!0,t.head.appendChild(s)}(document,window,"TOKEN");
chmln.identify(USER.ID_IN_DB, { // Unique ID of each user in your database (e.g. 23443 or "590b80e5f433ea81b96c9bf6")
email: USER.EMAIL });
</script>
...
...
</head>
</div>
)
}
But the above doesn't seem to work. I tried the same inside a helmet but no luck. Both of them show an error for
SyntaxError: Unexpected token
Is there a way I can load this function in a specific component or do I have to do it in the index.html?
You seem to have a strong misunderstanding of what react is for and how it is used.
1) There should only ever be 1 head element on the page, and it should be in index.html not in the rendered output of a component.
2) Having a component render a <script> tag goes against the point of using react.
What you need to do is import the code you need into your component:
import './path/to/file.js'
And then from there chmln should be available on the window object
window.chmln.identify()
Related
I have a piece of javascript in the body section of index.html that modifies a div element with id='aww-wrapper'.
If I create a div element in the body of the index.html file above the script like so, once the webpage gets loaded, the script modifies the div element as intended.
<div style="width: 600px; height: 400px;" id="aww-wrapper"></div>
<div id="root"></div>
<script type="text/javascript">
var aww = new AwwBoard('#aww-wrapper', {
});
</script>
I need to do the same thing using react, however, if I make a react div element with the same ID in the App.js file instead of in the html file, the script no longer modifies/acts on the react div element.
import './App.css';
function App() {
return (
<div className="App">
<div style={{width:'600px', height:'400px'}} id="aww-wrapper">
</div>
</div>
);
}
export default App;
The code is meant to create a whiteboard app using the following awwapp.com code. I dont know whats wrong with the react implementation, is the script tag running first before the react div is made?
If you'd like to try this yourself, place this in the head section of index.html and use the html code above to create the whiteboard.
<head>
<script src="https://awwapp.com/static/widget/js/aww3.min.js"></script>
</head>
You cant mix React with an external script like that, because React handles the rendering.
The aww script cant find the element because React hasnt renderd it yet. So it would need to run after the render. But, if you do happen to get the element, React might just re-render it on some state change, which will cause your whiteboard to disappear again.
Unless they provide an npm package, which I cant seem to find, you cant load it the way youre trying to.
I'm new to react and I'm trying to render one component in different html files (because I'm working in an existing project), each of them with different text.
I'm thinking of something like this:
class ctaSection extends React.Component{
render(){
return(
<div className="cta-section">
<div className="md:w-9c">
<h5 className="uppercase">{this.props.h5}</h5>
<h3>{this.props.h3}</h3>
</div>
<div className="cta-button">
<a href="#">
<button className="w-full">{this.props.button}</button>
</a>
</div>
</div>
);
}
}
export default ctaSection;
Then, in my index.js, I'm rendering like this, passing the props:
let ctaPage1 = document.getElementById('cta-section-page-1');
let ctaPage2 = document.getElementById('cta-section-page-2');
ReactDOM.render(<CtaSection h3='my text for page 1' h5='my h5 for page 1' button='hello'/>, ctaPage1);
ReactDOM.render(<CtaSection h3='text for page 2' h5='something' button='click me'/>, ctaPage2);
I'm not sure if this is the best and simpler way to do this, because I'm calling ReactDOM.render twice for same component, and I got this error:
Uncaught Invariant Violation: Target container is not a DOM element.
This works fine if I render the component once, but not for multiple instances.
What is the best way to do it?
I've thought about this more, and I'm not experienced with adding React to existing websites, but here's what I'd suggest:
I would have 1 JS file per HTML page that imports CtaSection, each of those files would look like such:
// page1.js
import CtaSection from '../CtaSection'; // or wherever it is
let ctaPage = document.getElementById('cta-section-page');
ReactDOM.render(<CtaSection h3='my text for page 1' h5='my h5 for page 1' button='hello'/>, ctaPage);
You would just need to make sure each html page uses the corresponding JS file.
// page1.html
<body>
<div id="cta-section-page"></div>
<script src="page1.js"></script>
</body>
Repeat for each page.
I am working on Vue app that incorporates Vue Bootstrap Calendar, and I would like to be able to override the content of the day cell (handled by the Day.vue component) to add my own custom content inside. My thought was initially to modify the Day component to include <slot></slot> tags and pass in the custom content that way.
The problem has to do with accessing the Day component. To include the calendar in your app, you include the Calendar.vue component, which includes Week.vue, which in turn includes Day.vue. As I understand slots, I have to have the child component (Day.vue in this case) included in the component where I'm passing the data, which means it would need to be included in my own component.
If this is not possible, my other thought is to perhaps modify the library by adding another configuration prop (something like dayCustomContent) to the Calendar.vue that indicates that the Day cell content is custom content, pass that in to Calendar.vue, and then down to Day.vue, and then in the Day.vue template, have a v-if conditional based on this prop that either displays the custom content or the default cell content, something like:
<template>
<div class="day-cell" v-if="dayCustomContent">
...my custom content here...
</div>
<div class="day-cell" v-else>
...default events from my.events goes here...
</div>
</template>
I would probably then need to define a custom component to render whatever custom content I want to display, and somehow include that component within Day.vue.
So to sum up, my questions are these:
1) Is there a way to do what I need with slots?
2) For my second option, am I going down the right path? I'm open to suggestions.
UPDATE: I was able to get this done by adding a boolean customDayContent prop in Calendar.vue like so and passing it down to Week.vue and then to Day.vue:
<template>
...
<div class="dates" ref="dates">
<Week
v-for="(week, index) in Weeks"
:firstDay="firstDay"
:key="week + index"
:week="week"
:canAddEvent="canAddEvent"
:canDeleteEvent="canDeleteEvent"
:customDayContent="customDayContent"
:displayWeekNumber="displayWeekNumber"
#eventAdded="eventAdded"
#eventDeleted="eventDeleted"
></Week>
</div>
...
</template>
<script>
export default {
...
props: {
...
customDayContent: {
type: Boolean,
default: false
}
},
}
</script>
and then in Day.vue, do like I had suggested with v-if:
<template>
<div class="day-cell" v-if="customDayContent">
<custom-day></custom-day>
</div>
<div
class="day-cell"
:class="{'today' : day.isToday, 'current-month' : day.isCurrentMonth, 'weekend': day.isWeekEnd, 'selected-day':isDaySelected}"
#click="showDayOptions"
v-else
>
... existing code goes here...
</div>
</template>
The last part is referencing the CustomDay.vue component referenced in my v-if block. I want the user to be able to define the content of their own custom CustomDay.vue template in their own parent app. However, I'm having trouble trying to figure out how to do that. Following the pattern of including components already in this component, I added this in the components section of Day.vue:
CustomDay: require("../../../../src/Components/CustomDay.vue").default
? require("../../../../src/Components/CustomDay.vue").default
: require("../../../../src/Components/CustomDay.vue")
However, no matter what I try along these lines, I get an error that the relative module was not found. On top of that, I need to add it to the componentsarray only if customDayContent is true. What is the best way to do that? In a watcher or computer property, perhaps? Or another way?
I created a react component that I want to use twice(or more) inside my page, and I need to load a script tag for it inside the head of my page but just once! I mean even if I use the component twice or more in the page it should add the script tag just once in the head.
The Problem is that this script tag should be absolutely a part of the component and not statically inserted in the head of my page.
Can anyone help me to make the magic happens? Thanks a lot in advance!
You can give react-helmet a try for managing changes to your <head> from within React components.
In particular, you can check this example where rendering the same element four times only adds the script tag once.
For completeness, the relevant code from the example (although the interesting part is to see how it executes):
import { Helmet } from "react-helmet";
function ComponentWithHeader() {
return (
<div>
<div>Oh hi</div>
<Helmet>
<script src="fake-url.js" />
</Helmet>
</div>
);
}
const App = () => (
<div>
<ComponentWithHeader />
<ComponentWithHeader />
<ComponentWithHeader />
<ComponentWithHeader />
</div>
);
You can set the state of the parent component to keep in memory that the script is already added.
if (!this.state.scriptAdded) {
// Add script tag
this.setState({ scriptAdded: true });
}
I'd like to use two separate layouts for my aurelia app. Difference between them is that one doesn't have a sidebar. Currently I'm using one layout file defined as below:
<template>
<div class="container">
<router-view></router-view>
</div>
</template>
If an active route needs this sidebar to appear I'm just putting it into its view.
What I'd like to achieve is to add another layout that would have this sidebar by default:
<template>
<require from="../common/elements/sidemenu/sidemenu"></require>
<div class="container">
<sidemenu></sidemenu>
<router-view></router-view>
</div>
</template>
So the question is - how to do this? Is it even possible with an aurelia app to have multiple layouts (or master pages, however you call those)?
Use aurelia.setRoot()
You can manually set up your application by specifying a script with configure instructions in your index.html. Typically, this is set to main.
index.html
<body aurelia-app="main">
In this script you can specify a root view model using aurelia.setRoot('root'). If no argument is provided, the convention is to use 'app'.
main.js
aurelia.start().then(() => aurelia.setRoot());
However, you can inject the aurelia object anywhere in your application, and call the setRoot function at any time to load a different root view model.
home.js
#inject(aurelia)
export class HomeViewModel {
constructor(aurelia) {
this.aurelia = aurelia;
}
doStuff() {
this.aurelia.setRoot('withSidebar');
}
}
One common use case for this is having a login page, and I've created a complete template for this use case that you can review, clone, or fork here: http://davismj.me/portfolio/sentry/