App Start (Sec. B)

A UINL app starts with an app.start like the following:

app.start(event => {
  app.display({
    cap: "JavaScript TouchDev (in-progress)",    // Title of the application or window
    require: { c: ["grid", "opt"] },             // Specifies required CSS classes or modules
    style: "self_sb_5.css",                      // Specifies the stylesheet to be used
    value: [
      { id: "Your space" },                      // An element with an ID "Your space"
      { 
        id: "Things to Do", 
        v: [...COMPONENTS.keys()].map((x) => ({ id: x, c: "btn" })) 
        // Maps each key from COMPONENTS to a button element
      },
    ]
  });
});

Detailed Breakdown

1. app.start(event => { ... }):

   • This is an event listener that starts the application when a specific event occurs.

   • event is the parameter that captures the event object.

2. app.display({ ... }):

   • This function call displays the main interface of the application.

   • It takes an object as an argument that defines the properties and structure of the display.

3. Properties of the display Object:

   • cap: "JavaScript TouchDev (in-progress)":

     • cap stands for caption or title, indicating that the application is a work in progress.

   • require: { c: ["grid", "opt"] }:

     • Specifies the required CSS classes or modules. In this case, "grid" and "opt" might refer to layout and optional styles or components.

   • style: "self_sb_5.css":

     • Specifies the CSS stylesheet to be applied to the application interface.

   • value: [ ... ]:

     • An array defining the elements to be displayed in the application interface.

4. Elements in the value Array:

   • { id: "Your space" }:

     • An element with an ID of "Your space". This might be a placeholder or a container for user content.

   • { id: "Things to Do", v: [...] }:

     • An element with an ID of "Things to Do".

     • v: [...COMPONENTS.keys()].map((x) => ({ id: x, c: "btn" })):

       • COMPONENTS.keys() gets all the keys from the COMPONENTS map.

       • map((x) => ({ id: x, c: "btn" })) maps each key x to an object representing a button:

         • id: x: The ID of the button is set to the key.

         • c: "btn": The class of the element is set to "btn", indicating that it's a button.

Overall Functionality

When the event triggers the app.start function:

• The app.display function is called to render the main interface.

• The interface has a title "JavaScript TouchDev (in-progress)".

• It requires certain CSS classes and uses the specified stylesheet.

• It includes two main elements:

  1. A placeholder or container with the ID "Your space".

  2. A section titled "Things to Do" containing buttons for each key in the COMPONENTS map.

Credit: The above outline was built using ChatGPT.