JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://knockoutjs.com/downloads/knockout-3.2.0.js"></script>
<input type="text"
       data-bind="textInput : keyword, 
                  event: {keypress: enterSearch}" >
</input>

<span data-bind="text: results" ></span>

JavaScript

function MyModel(){
    var that = this;
    that.keyword = ko.observable("");
    that.results = ko.observable("");
    that.enterSearch = function(d,e){
       e.keyCode === 13 && that.search(); 
       return true;
    };

    that.search = function(){
        that.results("Results are: "+ that.keyword() );
    }
}
$(function(){
    ko.applyBindings(new MyModel());
});