Note: This is an alpha release of whit with incomplete documentation.

import html, { body } from "whit-html";
import form, {textField, select, option, checkbox, clearValue} from "whit-form";

body.append(
  form("http://myserver.com/users", "post",
    textField("Name:", "user[name]", "Your name here.")
      .clearValueOnFocus,

    textField("Email:", "user[email]", "Your email here.")
      .clearValueOnFocus,

    select("Favorite Color:", "user[favorite_color]",
      option("Red").default,
      option("Orange"),
      option("Yellow"),
      option("Green"),
      option("Blue"),
      option("Violet")
    ),

    checkbox("Join our Mailing List?", "user[mailing_list]"),

    submit("Submit to Enter Contest")
  ).on("submit", (formView, event) => {
    event.preventDefault();
    view.
  })
);

Features

• Zero Dependencies
• No templates. Markup is generated automatically.
• 100% Vanilla-JS
• 6.1Kb Uncompressed
• 100% Test Coverage
• High-Quality Source Code & Test Files that are simple to read, understand, and extend.
  • Cyclomatic Complexity under 3
  • Halstead Time under 36 minutes
  • Maintainability Index over 100
  • 36 or less logical lines of code for all files

Introduction

There are two primary ways to use Whit depending on the syntax you want to work with.

Factory Syntax

• Create factory functions that instantiate views and return them for you.
• Lets you create a custom view DSL using vanilla-js.
• Simplifies creation and combination of views.

./app.js :

import { orderedList, listItem, body } from "./views.js";

body.append(
    orderedList(
        listItem("One"),
        listItem("Two"),
        listItem("Three")
    )
);

./views.js :

import View from "whit";

export function orderedList(...children) {
    return new class OrderedList extends View {
        initialize(options) {
            options.tag = "ol",
            options.children = children;
        }
    };
}

export function listItem(labelText) {
    return new class ListItem extends View {
        initialize(options) {
            options.tag = "li"
        }
    }
}

const body = new class Body extends View {
    initialize(options) {
        // Get an existing element instead of creating a new one.
        options.element = document.getElementByTagName("body")[0]
    }
};

export { body };

Class Syntax

• See exactly what's going with nothing masked.
• Less complex than creating a factory wrapper for each view.

./app.js :

import { OrderedList, ListItem, Body } from "./views.js";

const body = new Body();

const orderedList = new OrderedList({
    children: [
        new ListItem({ contents: "One" }),
        new ListItem({ contents: "Two" })
        new ListItem({ contents: "Three" })
    ]
});

body.append(orderedList);

./views.js :

import View from "whit";

export class OrderedList extends View {
    initialize(options) {
        options.tag = "ol"
    }
}

export class ListItem extends View {
    initialize(options) {
        options.tag = "li"
    }
}

export class Body extends View {
    initialize(options) {
        // Get an existing element instead of creating a new one.
        options.element = document.getElementByTagName("body")[0]
    }
}

Events

Attach event handlers to views with .on, then trigger them with .trigger.

import View from "whit";

const myView = new View();

myView.on("some-event", (view, event) => alert("Yep. It works."))

myView.trigger("some-event");

Whit will trigger the mount event when a view is mounted to the DOM:

import View from "whit";

class Body extends View {
    initialize(options) {
        options.element = document.getElementByTagName("body")[0]
    }
}

const bodyView = new Body();
const myView = new View();

myView.on("mount", (view, event) => alert("I'm now mounted in the DOM!"))

bodyView.append(myView);

Attributes

Change attributes easily

import View from "whit";

const myView = new View();

myView.on("some-event", (view, event) => alert("Yep. It works."))

myView.trigger("some-event");

Whit will trigger the mount event when a view is mounted to the DOM:

import View from "whit";

class Body extends View {
    initialize(options) {
        options.element = document.getElementByTagName("body")[0]
    }
}

const bodyView = new Body();
const myView = new View();

myView.on("mount", (view, event) => alert("I'm now mounted in the DOM!"))

bodyView.append(myView);

Getting Started

Installation

npm install whit --save

Creating & Displaying Views

1. Import the View class from whit.
2. Extend the View class for each of your application's views.
3. Use the .initialize method ( not .constructor ) to customize each view's options.
4. Instantiate & combine views as required.
5. Append the view to your document.

import View from "whit";

class OrderedList extends View {
    initialize(options) {
        options.tag = "ol"
    }
}

class ListItem extends View {
    initialize(options) {
        options.tag = "li"
    }
}

class Body extends View {
    initialize(options) {
        // Get an existing element instead of creating a new one.
        options.element = document.getElementByTagName("body")[0]
    }
}

const orderedList = new OrderedList({
    children: [
        new ListItem({ contents: "One" }),
        new ListItem({ contents: "Two" })
        new ListItem({ contents: "Three" })
    ]
});

const body = new Body();

body.append(orderedList);

Cleaner Syntax w/ Factories

Add an ID

import View from "whit";

const view = new View();

view.toString(); // <div></div>

Render to String

<html>
  <body>
    <form action="http://myserver.com/users" method="post">
      <ol>
        <li class="text">
          <label for="user_name">Name:</label>
          <input id="user_name" type="text" name="user[name]" value="Your name here." />
        </li>
        <li class="text">
          <label for="user_email">Email:</label>
          <input id="user_email" type="text" name="user[email]" value="Your email here." />
        </li>
        <li class="select">
          <label for="user_favorite_color">Favorite Color:</label>
          <select id="user_favorite_color" type="text" name="user[favorite_color]">
            <option value="Red">Red</option>
            <option value="Orange">Orange</option>
            <option value="Yellow">Yellow</option>
            <option value="Green">Green</option>
            <option value="Blue">Blue</option>
            <option value="Violet">Violet</option>
          </select>
        </li>
        <li class="checkbox">
          <label for="user_mailing_list">Join our Mailing List?</label>
          <input id="user_mailing_list" type="checkbox" name="user[mailing_list]" />
        </li>
        <li class="submit">
          <input type="submit" value="Submit to Enter Contest" />
        </li>
      </ol>
    </form>
  </body>
</html>