/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
var app = {
    // Application Constructor
    initialize: function() {
        this.bindEvents();
    },
    // Bind Event Listeners
    //
    // Bind any events that are required on startup. Common events are:
    // 'load', 'deviceready', 'offline', and 'online'.
    bindEvents: function() {
        document.addEventListener('deviceready', this.onDeviceReady, false);
    },
    // deviceready Event Handler
    //
    // The scope of 'this' is the event. In order to call the 'receivedEvent'
    // function, we must explicitly call 'app.receivedEvent(...);'
    onDeviceReady: function() {
        app.receivedEvent('deviceready');
    },
    // Update DOM on a Received Event
    receivedEvent: function(id) {
        var parentElement = document.getElementById(id);
        var listeningElement = parentElement.querySelector('.listening');
        var receivedElement = parentElement.querySelector('.received');

        listeningElement.setAttribute('style', 'display:none;');
        receivedElement.setAttribute('style', 'display:block;');

        console.log('Received Event: ' + id);
    }
};

function calcASDASCRP() {
	var result = (0.12 * document.getElementById('bp').value) +
				 (0.06 * document.getElementById('dms').value) +
				 (0.11 * document.getElementById('pg').value) +
				 (0.07 * document.getElementById('pps').value) +
				 (0.58 * Math.log(1 + (document.getElementById('measurement').value * 1)));
	return result;
}

function calcASDASESR() {
	var result = (0.08 * document.getElementById('bp').value) +
				 (0.07 * document.getElementById('dms').value) +
				 (0.11 * document.getElementById('pg').value) +
				 (0.09 * document.getElementById('pps').value) +
				 (0.29 * Math.sqrt(document.getElementById('measurement').value));
	return result;
}

function calcASDAS() {
	var result;
	if (document.getElementById('crp-or-esr').value == 'crp') {
		result = calcASDASCRP();
	} else {
		result = calcASDASESR();
	}
	return result
}

function onAsdasFormSubmit() {
	document.getElementById('asdas-form').setAttribute('style', 'display:none');
	document.getElementById('asdas-result-panel').setAttribute('style', 'display:block');
	var ASDAS = calcASDAS();
	document.getElementById('asdas-result').innerHTML = ASDAS.toFixed(1);
	var backdrop_color;
	if (ASDAS < 1.3) {
		backdrop_color = '#ffff33';
	} else if (ASDAS < 2.1) {
		backdrop_color = '#ffaa33';
	} else if (ASDAS < 3.5) {
		backdrop_color = '#ff5533';
	} else {
		backdrop_color = '#ff0033';
	}
	document.getElementById('result-backdrop').setAttribute('style', 'background-color: ' + backdrop_color);
}

function onAsdasResultPanelSubmit() {
	document.getElementById('asdas-form').setAttribute('style', 'display:block');
	document.getElementById('asdas-result-panel').setAttribute('style', 'display:none');
}

Update index.js