Passing global Javascript variables through callback functions to other JS files -

so have interesting problem. declare global variable before referencing other javascript files, variable not seem carry through. maybe missing step somewhere?

the variable string contents of uploaded file so:

function gettext(s){ //creates global variable can hold file         window.text = s;         console.log(window.text);   };        function handlefileselect(event) {     var files = event.target.files; // file uploaded       var reader = new filereader();                       reader.onloadend = function(event){                     gettext(event.target.result); //pulling out content of file         loadscript('total.js',function(){ //starts app code             window.text         });      };           reader.readastext(files[0],"utf-8");//required read text         };              try{         document.getelementbyid('files').addeventlistener('change',          handlefileselect, false); //listens uploaded file   }       catch(e){         alert(e);   }; 

so once user uploads file, contents copied window.text so. contents logged ensure caught right thing. loadscript allows rest of app code start running. needed program wait user specify file before continue, , had weird quirks angularjs, running in manner workaround think of.

the contents of loadscript:

function loadscript(url, callback){  var script = document.createelement("script") script.type = "text/javascript";  script.onload = function(){     callback(); };  script.src = url; document.getelementsbytagname("head")[0].appendchild(script); 

};

total.js begins line of code, leads output:

var csv=window.text; 

everything works. output looks should...save it's empty. meaning window.text isn't pulling through correctly.

is due callback it's not making way through? how can solve this?

edit: function callback isn't running @ all, i've figured out, it's not issue of passing variable through. phpglue's input still valid. thanks.

instead of window.text, declare variable with, recommend, or without var keyword, above of code, like:

var windowtext; function gettext(s){     windowtext = s;     console.log(windowtext); } 

in javascript variables automatically carry down, if written above other code, unless scoped inside function specifically. long don't use var keyword in function code, can reuse windowtext.