gistfile1.js

'use strict'
var context = SP.ClientContext.get_current();
var user = context.get_web().get_currentUser();
var hostUrl = decodeURIComponent(getQueryStringParameter("SPHostUrl"));
var appWebUrl = decodeURIComponent(getQueryStringParameter("SPAppWebUrl"));
var PeopleID = '';
$(document).ready(function() {
    ExecuteOrDelayUntilScriptLoaded(StartThread, "sp.js");
});

function StartThread() {
    PeopleID = GetUserName;
    $("‪#‎MyTest‬").text(PeopleID);
    $("‪#‎DagensData‬").text(GetToDaysPlanInstances('2015-02-28', PeopleID));
}

function GetUserName() {
    var TempUserName = '0001';
    //context.load(user);
    //context.executeQueryAsync(function () {TempUserName = user.get_title(); }, function () { TempUserName = "Error" });
    var TempPeopleID = String();
    $.ajax({
        url: appWebUrl + "/_api/lists/getbytitle('tbl_People')/items?$top=5&$filter=PeopleNumber%20eq%20'" + TempUserName + " '",
        method: "GET",
        async: false,
        headers: {
            "Accept": "application/json; odata=verbose"
        },
        success: function(data) {
            if (data.d.results.length > 0) {
                TempPeopleID = data.d.results[0].PeopleID;
            } else {
                TempPeopleID = "Error getting user"
            }
        }
    });
    return TempPeopleID
}

function getQueryStringParameter(urlParameterKey) {
    var params = document.URL.split('?')[1].split('&');
    var strParams = '';
    for (var i = 0; i < params.length; i = i + 1) {
        var singleParam = params[i].split('=');
        if (singleParam[0] == urlParameterKey)
            return decodeURIComponent(singleParam[1]);
    }
}

function GetToDaysPlanInstances(DateToFetch, PeopleIDToFetch) {
    var MyResultSet;
    var startDate = new Date(DateToFetch);
    startDate.setHours(0);
    startDate.setMinutes(0);
    startDate.setSeconds(0);
    startDate.setMilliseconds(0);
    var stopDate = new Date(startDate);
    stopDate.setDate(stopDate.getDate() + 2);
    var MySearchString = appWebUrl + "/_api/web/lists/getbytitle('tbl_PlanInstances')/items?$filter=StopDateTime%20lt%20datetime'" + stopDate.toJSON() + "'%20and%20StartDateTime%20gt%20datetime'" + startDate.toJSON() + "'%20and%20PeopleID%20eq%20" + PeopleIDToFetch + "&$orderby=StartDateTime%20asc";
    $.ajax({
        url: MySearchString,
        method: "GET",
        async: false,
        headers: {
            "Accept": "application/json; odata=verbose"
        },
        success: function(data) {
            MyResultSet = data.d.results
        }
    });
    return MyResultSet;
}