Caml query for date range not working in ecma

Question

Not able to get item collection by my CAML in date range, while able to get in simple CAML query.

Please any body let me know what is the correct format of passing date string.

function check_Submission() { 
    this.clientContext = new SP.ClientContext.get_current(); 
    var oList = clientContext.get_web().get_lists().getByTitle('Employee Sift Details');
    var startDateFx ="2015-11-17T20:21:11Z";
    var endDatFx ="2015-11-17T20:21:11Z"; 
    var StrQuery = '<View Scope=\'RecursiveAll\'>' +
                        '<Query>' +
                            '<Where>' +
                            '<Geq>' +
                                '<FieldRef Name='Sift_x0020_Date' />' +
                                '<Value Type='DateTime' IncludeTimeValue='FALSE'>'+endDatFx+'</Value>' +
                            '</Geq>' +
                            '</Where>' +
                        '</Query>' +
                '</View>';                              
    var camlQuery = new SP.CamlQuery();
    camlQuery.set_viewXml(StrQuery);
    this.collListItem = oList.getItems(camlQuery);
    clientContext.load(collListItem);  
    this.clientContext.executeQueryAsync(Function.createDelegate(this,this.onQuerySucceeded4), Function.createDelegate(this,this.onQueryFailed4));
}

function onQuerySucceeded4(sender, args) { 
    alert('Request sucwess');
}

function onQueryFailed4(sender, args) {
    alert('Request failed. \nError: ' + args.get_message() + '\nStackTrace: ' + args.get_stackTrace());
}    

Answer 1

The CAML query is exactly doing what you tell it to do..

Check your single quotes.. the string you build is messed up

var StrQuery = '<View Scope=\'RecursiveAll\'>'

Correct, you escaped the quotes

'<FieldRef Name='Sift_x0020_Date' />' +

Incorrect, either escape the single quotes or use a double-quote