Data Context Binding

Simple and lightweight solution for binding data to DOM elements.
This manual is also available in HTML5.

Introduction

Data context binding library for browser.
This library is a simple and lightweight solution for binding data to DOM elements.
Used when building a single-page application (SPA), this library offers a modern approach.

frontend workflow: data > 'data-context' > 'data-context-binding' > DOM elements
backend to frontend workflow: file > 'fs-broker' > 'data-context' > 'ws-user' > 'tiny-https-server' > 'ws13' > browser > 'ws-user' > 'data-context' > 'data-context-binding' > DOM elements

Please note, this version is not backward compatible with version 1.x
Requires 'data-context' module version 2.x
Note the restrictive requirements of the 'data-context' module.

Features

Bind data to the DOM elements.
template engine for rendering HTML.
Watch for changes in the data and update the DOM elements.

Testing

To test, open the 'index.test.html' file. The tests will run and the results will be displayed.

or on the command line in the project directory 'data-context-binding':

npm test

Usage

This example demonstrates a simple and effective way to bind data to DOM elements using the data-context-binding library.

Summary

Import Modules: Load the required JavaScript libraries.
Add Data: Define the data in a script tag with type application/json.
Bind Data: Use path and bind attributes to bind data to DOM elements.
Editable Fields: Allow users to edit data and reflect changes in real-time.
Live Changes: Listen for data changes and update the DOM dynamically.

hello-world.html:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>data-context-binding</title>
    <!-- STEP 1. Import the modules 'data-context' and 'data-context-binding'.
        Import for an HTML page hosted on the server. -->
    <!--<script src="./datacontext.js"></script>-->
    <!--<script src="./browser.js"></script>-->
    <!-- STEP 1. Import the modules 'data-context' and 'data-context-binding'.
        Import for a standalone HTML page. -->
    <script async src="https://cdn.jsdelivr.net/npm/data-context"></script>
    <script async src="https://cdn.jsdelivr.net/npm/data-context-binding"></script>
    <!-- STEP 2. Add the data to a container with the ID 'data'. Its contents will be read automatically. -->
    <script id="data" type="application/json">
        {
            "doc": {
                /* 1: The metadata-title context object */
                /* 2: The metadata-title context object */
                "title": "Hello World", // The title comment
                /* The metadata-description context object */
                "description": "This is a simple example of data context binding.", // The description comment
                /* { "hidden": "This is a must be hidden value." } */
                "debug": false
            }
        }
    </script>
</head>
<body>
    <!-- STEP 3. Bind data to the DOM elements.
        In this container we use the 'doc' object.
        The 'path' attribute is part of property path. -->
    <div path="doc">
        <div>
            <!-- STEP 3. Bind data to the DOM elements.
            The `path` attribute  is property path in the data object.
            The `bind` attribute is performed data binding. -->
            <h1 path="title" bind>Title</h1>
            <!-- STEP 3. Bind data to the DOM elements.
            The `path` attribute  is property path in the data object.
            The `bind` attribute is performed data binding. -->
            <p path="description" bind>Description</p>
        </div>
    </div>
    <hr />
    <h3>Edit the values:</h3>
    <label for="title">Title:</label>
    <br />
    <!-- STEP 3. Bind data to the DOM elements.
    The `path` attribute  is property path in the data object.
    The `bind` attribute is performed data binding. -->
    <input type="text" path="doc.title" bind style="width:380px" />
    <br />
    <br />
    <label>Description:</label>
    <br />
    <!-- STEP 3. Bind data to the DOM elements.
    The `path` attribute  is property path in the data object.
    The `bind` attribute is performed data binding. -->
    <input type="text" path="doc.description" bind style="width:380px" />
    <hr />
    <label>Live changes:</label>
    <br />
    <!-- STEP 3. Bind data to the DOM elements.
    The `bind` attribute is performed data binding. 
    Listens for data context changes -->
    <textarea cols="50" rows="10" bind="change"></textarea>
</body>
</html>

Here is also a DEMO

References

License

This project is licensed under the MIT License.

Donations are welcome and will go towards further development of this project.