dom-binding-stream

Binds to a DOM node, and emits changes of any inputs/textareas/selects inside it.

This module expects a DOM node with either <textarea>, <input>, or <select> tags as children somewhere inside it (can be as deep in the tree as you want). Those elements should then have the attribute data-binding which contains a keypath to emit updates under.

Example

Live demo.

Given some HTML that looks like this:

<main>
    <div>
        <label>Select box</label>
        <select data-binding="select" value="foo">
        <option>Foo</option>
        <option>Bar</option>
        <option>Baz</option>
        </select>
    </div>
    <div>
        <label>Text Input</label>
        <input data-binding="text">
    </div>
    <div>
        <label>Radio Button Input</label>
        <input type="radio" name="radio" value="foo" data-binding="radio">
        <input type="radio" name="radio" value="bar" data-binding="radio">
        <input type="radio" name="radio" value="baz" data-binding="radio">
    </div>
</main>

We can set up the binding and listen for changes like so:

var domBinding = require("../");
var map = require("through2-map").obj;
var merge = require("object-merge-stream");

var output = document.getElementById("output");

domBinding("main") // Listen for changed inputs
    .pipe(merge()) // Merge all the changes together
    .pipe(map(log)); // Log merged changes to console

function log(data) {
    // Log the changed data to the console
    console.log(data);
}