Integrating Dart with external libraries

Here is a straightforward example demonstrating the usage of a map library:

<!doctype html>
<html>
<head>
    <script src="http://api4.mapy.cz/loader.js"></script>
    <script>Loader.load()</script>
</head;

<body>
    <div id="mapa" style="width:600px; height:400px;"></div>
    <script type="text/javascript">
        var center = SMap.Coords.fromWGS84(14.41, 50.08);
        var map = new SMap(JAK.gel("mapa"), center, 10);
        mapa.addDefaultLayer(SMap.DEF_BASE).enable();
        mapa.addDefaultControls();                
    </script>
</body>
</html>

I am looking for ways to integrate this code into Dart without relying on JavaScript as I lack expertise in that language. Despite trying options like GWT and experimenting with Dart, integrating third-party libraries has been challenging. For instance, my attempted Dart implementation looks like this:

var center = context['SMap']['Coords'].callMethod('fromWGS84', [14.41, 50.08]);
var element = context['JAK'].callMethod('gel', 'mapa');
var map = new JsObject(context['SMap'],[[element], [center], 10]);

While the first line seems promising, further progress is halted by undefined errors and typical JavaScript confusion. Debugging dart.js feels like delving into a realm of pure chaos.

Answer №1

It appears that the output matches your JavaScript code:

  var center = context['SMap']['Coords'].callMethod('fromWGS84', [14.41, 50.08]);
  var targetElement = context['JAK'].callMethod('getById', ['map']);
  var mapInstance = new JsObject(context['SMap'],[targetElement, center, 10]);
  mapInstance.callMethod('addDefaultLayer', [context['SMap']['DEFAULT_BASE']])
      .callMethod('enable', []);
  mapInstance.callMethod('addDefaultControls', []);

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Unexpectedly, optimization causing issues on Angular site without explanation

Currently, I am utilizing Angular to construct a front-end website that searches for and showcases information obtained through API requests. Whenever I compile the project into a file bundle for static deployment using ng build, I notice that the resultin ...

Unable to assign a value to a null property during the onchange event

I'm currently working on a project where I need to display flight details based on the selected flight number. To achieve this, I have created a dropdown menu that lists all available flight numbers and a table displaying various flight details such a ...

Error importing React Icons with the specific icon FiMoreHorizontal

Currently following a guide to create a Twitter-like application and I need to add the following imports: import { FiMoreHorizontal } from 'react-icons/fi' 2.3K (gzipped: 1K) import { VscTwitter } from 'react-icons/vsc' 3.1K (gzipped: ...

Accessing Facebook through the React create app login

I recently developed a React Webapp using the create-react-app module. My current challenge involves integrating Facebook login, but I'm encountering some obstacles. I am unsure about where to incorporate the Facebook JavaScript SDK asynchronously to ...

Are you looking for a way to prevent the default behavior of an event in angular-ui-router 1.0.x? Check out

Recently, I made a change in my code where I replaced $stateChangeStart with $transitions.onStart $rootScope.$on('$stateChangeStart', function(e, ...){ e.preventDefault(); // other code goes here... }); Now, the updated code looks lik ...

Navigating views with ReactJS using ES5

I have been searching for ReactJs guides, but most of them are based in ES5. As a result, I have begun using ReactJS in this manner. Now that I understand how to create all my components, I am ready to build a small single-page-application. However, I am s ...

Is there a way to disable automatic spacing in VS code for a React file?

I am currently working on my code in VS Code within my JSX file, but I keep encountering an error. The issue seems to be that the closing tag < /h1> is not being recognized. I have attempted multiple methods to prevent this automatic spacing, but so ...

Creating a multipart/form-data request using JavaScript/jQuery

After much searching and experimentation, I have been trying to understand the process of constructing a request to be sent using something similar to $.ajax({ contentType: "multipart/form-data", type: "POST", data: ...

Apply bold formatting to the HTML text only, leaving the EJS variable untouched beside it

https://i.sstatic.net/X36eG.png Is there a way to format the text for "Guest signed up" and "Guests attended" in bold while keeping the values normal? Here is my current code: <li class="list-group-item">Guests signed up: <%= guestSignu ...

Is it possible to utilize JavaScript for displaying a continuous stream of images?

In this scenario, you are tasked with working with an image API and need to send a POST request to retrieve an image stream for display on the rest of your webpage. While I am able to use jQuery to make an ajax request to the service upon page load, I am ...

Activate the class when clicked

I am facing a minor issue with the JavaScript onClick function. I need a function that will target a specific class, like .modal. Currently, it looks like this <div class="modal" onclick="modalFix()"> <p>here is some text</p> </div> ...

When the dialog is opened, automatically set the focus on the text field inside

I am facing an issue with focusing a custom text field when opening a dialog. I have tried using vue.js refs: Code: <v-app id="app"> <v-row align="center"> <v-col class="text-center" cols="12"> <v-btn color="primary" @cli ...

How should res.render() and res.redirect() be properly utilized within Express framework?

I am struggling to understand the difference between res.render('viewname', {msg: 'Message' }) and res.redirect('route') The render function allows you to pass a "message", but the redirect function does not. However, ther ...

What could be causing the $httpProvider.interceptors to unexpectedly return an 'undefined' value?

Having some trouble parsing the response of my basic AngularJS app that consumes Yelp's API using $httpProvider.interceptors. This is the structure of my app: var app = angular.module("restaurantList", []); The yelpAPI service handles authenticatio ...

When attempting to navigate to a different page in Next.js, the Cypress visit functionality may not function as

In my upcoming application, there are two main pages: Login and Cars. On the Cars page, users can click on a specific car to view more details about it. The URL format is as follows: /cars for the general cars page and /cars/car-id for the individual car p ...

Trigger an Ajax function using a button within a Bootstrap modal

I need to trigger an ajax function after selecting an option from a bootstrap confirmation modal. The modal will appear by calling the remove(parameter) function. Any assistance would be greatly appreciated function remove(parameter){ // $("#remove-mod ...

At what point does the cleanup function in UseEffect activate the clearInterval() function?

In the process of creating a timer for a Tenzie game, there is an onClick function that changes the state of isTimerActive from false to true when a user clicks a button. The initial value of tenzie state is also set to false, but once the user completes t ...

Organizing and recycling React styled-components and native elements

As a backend engineer transitioning to frontend development, I am currently learning React and exploring styled-components for styling components. However, I am facing challenges in using styled-components with native React components and updating them in ...

Generate and save a document

Upon clicking the button, I am trying to generate a CSV file and download it right away. My current approach is as follows: html: <a class="btn btn-primary" @click="downloadCsv">Download CSV</a> <a v-if="fileObjectUrl !== null" ref="down ...

Filter a nested array in AngularJS and retrieve the parent object as the result

I've recently started experimenting with AngularJS to create checkbox filters for my wine store. Here is an example of an item in my store: { "id": 17, "name": "Ermelinda Freitas Reserva", "tag_ids": [40, 12, 56, 6, 60], " ...