Getting Started

We recommend organizing your source code like this:

<project-root>
- src
  - commonMain
    - kotlin
      - <your base package>
        
        model.kt (to use the model in client and server)
  - jsMain
    - kotlin
      - <your base package>
        
        app.kt (or choose any other name)
    - resources
      - index.html

The index.htmlis just a normal web-page. Be sure to include the resulting script-file from your Kotlin/JS-build . You can mark an element of your choice with an id to later mount your fritz2-components to it:

<html>
  <head>
    <title>Your title</title>
  </head>
  <body id="target">
    Loading...
    <script src="yourProject.js"></script>
  </body>
</html>

app.kt is the starting point of your fritz2 app, so make sure it has a main-function. Inside main, create some content by opening a render context and mount it to the DOM of your index.html:

fun main() {
    render("#target") {
        h1 { +"My App" }
        div("some-fix-css-class") {
            p(id = "someId") {
                +"Hello World!"
            }
        }
    }
}

When calling render like that, your content will be mounted to an HTMLElement with id="target". If you want to mount your content to the body of your index.html, you can omit this parameter. Instead of using the selector string with the querySelector syntax, you can also specify an HTMLElement directly on the targetElement parameter. Setting the override parameter to false means that your content will be appended. By default, all child elements will be removed before your content is appended to the targetElement.

Run the project by calling ./gradlew jsRun in your project’s main directory. Add --continuous to enable automatic building and reloading in the browser after changing your code.

And voilà, you are done! Maybe you would like to create some more versatile HTML now?