javascript - webapp read text file ajax, httprequest, or -

i'm using jquery mobile create web app... know best way read text file? @ moment, have functions working fine... don't know differences between them, , 1 better use? or fastest...

function 1

function readfileajax() {     $.get('txt/info.txt', function(txt) {         var lines = txt.split(/\n/);         var randlinenum = math.floor(math.random() * lines.length);         var text = lines[randlinenum];         var parts = text.split(/#/);            var fulltext = parts[0] + " " + parts[1] + " " + parts[2];         $("#msg").append("<p>" + fulltext + "</p>");     }); } 

function 2

function readfilehttprequest() {     var filepath = "txt/info.txt";     xmlhttp = new xmlhttprequest();     //xmlhttp.overridemimetype('text/plain');     xmlhttp.open("get",filepath,false);     xmlhttp.send(null);      var filecontent = xmlhttp.responsetext;     var lines = filecontent.split(/\n/);     var randlinenum = math.floor(math.random() * lines.length);     var text = lines[randlinenum];     var parts = text.split(/#/);        var fulltext = parts[0] + " " + parts[1] + " " + parts[2];     $("#msg").append("<p>" + fulltext + "</p>"); } 

thanks

function1 uses jquery wraps xmlhttprequest. if have jquery it's easier use whole way.

there's no real appreciable difference between 2 functions in terms of performance though.

edit: more reason use function1, there's no reason make synchronous. 3rd argument on open set false makes request synchronous, gives no improvement , block interactivity of page. syncronous call means blocks execution until request completed. if switch true, , use callback there's no appreciable difference.