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Tutorial HometurnOn

Pass function parameters with turnOn

In this page turnOn passes parameters to a JavaScript function. The passed parameters then get deconstructed and used for DOM manipulation.


In this tutorial you'll learn how to:
  • Pass parameters to JavaScript functions using turnOn.
  • Deconstruct passed parameters
Look at the text below to see the effect.

turnOn Example 1 hasn't started yet.
turnOn Example 2 hasn't started yet.

Source Code of this file

Below you'll see the source code of the file. Note that we're just showing the main part, and hiding some parts of the file which are not relevant for understanding the essentials. Click to expand the code

@inherits Custom.Hybrid.Razor12
@using ToSic.Sxc.Services;
@using ToSic.Razor.Blade;
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Pass function parameters with turnOn In... <!-- unimportant stuff, hidden -->
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<div id="turn-on-example">
  turnOn Example 1 hasn't started yet.
</div>
<div id="turn-on-example-deconstruct">
  turnOn Example 2 hasn't started yet.
</div>

@{
  // Use the PageService to activate turnOn
  GetService<IPageService>().Activate("turnOn");
}

@* Passes the parameters Hello for greeting and World for name in a JSON format and executes the window.turnOnTutorial110.init function *@
<turnOn turn-on='{ "run": "window.turnOnTutorial110.init()", "data": { "greeting": "Hello", "name": "World" } }'></turnOn>
<turnOn turn-on='{ "run": "window.turnOnTutorial110.demoDeconstruct()", "data": { "greeting": "Hello", "name": "World" } }'></turnOn>

<script src="@App.Path/turn-on/_110-parameters.js"></script>

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Source Code of _110-parameters.js

Below you'll see the source code of the file. Note that we're just showing the main part, and hiding some parts of the file which are not relevant for understanding the essentials. Click to expand the code

// Use an IFFE to ensure the variables are not exposed globaly
// See https://developer.mozilla.org/en-US/docs/Glossary/IIFE
(() => {
  // Simple init with Data object
  function init(data) {
    // Example element gets found in the DOM
    const exampleElement = document.querySelector("#turn-on-example")
    // Parameters get displayed in the DOM
    exampleElement.innerText = `turnOn has passed the parameters: ${data.greeting} ${data.name}!`;
  }
  
  // This is a more modern JS feature to deconstruct parameters
  // See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment
  function demoDeconstruct({greeting, name}) {
    // Example element gets found in the DOM
    const exampleElement = document.querySelector("#turn-on-example-deconstruct")
    // Parameters get displayed in the DOM
    exampleElement.innerText = `turnOn has passed the parameters: ${greeting} ${name}!`;
  }
  
  const tt = window.turnOnTutorial110 = window.turnOnTutorial110 || {};
  tt.init = tt.init || init;
  tt.demoDeconstruct = tt.demoDeconstruct || demoDeconstruct;
})();