valueAsObservable.js

// jQuery extensions

$.fn.valueAsObservable = function valueAsObservable() {
    var changes = $(this).changeAsObservable();
    var keyUps = $(this).keyupAsObservable();
    var values = changes.merge(keyUps).map(function (e) {return e.target.value});
    return values.distinctUntilChanged();
}

// Define some streams

var nameS = $('#user-info input[name=name]').valueAsObservable().subscribe(log);