attr-bind

2-way dom element binding

attr-bind

2-way dom element binding

example

<!doctype html>
<html>
  <body>
    <div>
      <label>Name:</label>
      <input type="text" binder="user-name" placeholder="Enter a name here">
      <hr>
      <h1>Hello <span binder="user-name"></span>!</h1>
    </div>
    <script src="bundle.js"></script> 
  </body>
</html>
var bind = require('attr-bind')();
 
var elems = document.querySelectorAll('*[binder]');
for (var i = 0; i < elems.length; i++) bind(elems[i]);

or you can use attractor:

var bind = require('attr-bind')();
var attr = require('attractor')({ binder: bind });
attr.scan(document);

Now the contents of the span tag update as you edit the input box.

If you want to capture the updated values programmatically, you can pass in an observable in place of an element:

var watch = require('observable')();
watch(function (value) {
    console.log('value=' + value);
});
bind(watch, 'key');

methods

var binder = require('attr-bind')

Return a bind() function. Optionally you can pass in an observable()-style function watcher fn.

Bind the element or observable elem to the key at key.

Look at ctx.scope for scope information. If there isn't already an entry set for ctx.scope[key], create a new scope entry with observ.

  • To update a observable, do: ctx.scope[key].set(newVal).
  • To read an observable value, do: ctx.scope[key]().
  • To track an observable's state, do: ctx.scope[key](function (newVal) {}).

install

With npm do:

npm install attr-bind

license

MIT