$ sign in jquery to javascript -

i looking way write file in javascript.i found excatly looking here

but problem uses jquery.i suppose task pure javascript.

my question how convert $ sign pure javascript without including jquery script in code.

in short how convert code pure javascript if possible.

  function createdownloadlink(anchorselector, str, filename){     if(window.navigator.mssaveoropenblob) {         var filedata = [str];         blobobject = new blob(filedata);         $(anchorselector).click(function(){             window.navigator.mssaveoropenblob(blobobject, filename);         });     } else {         var url = "data:text/plain;charset=utf-8," + encodeuricomponent(str);         $(anchorselector).attr("download", filename);   //when try document,getelementbyid not work.                     $(anchorselector).attr("href", url);     } }  $(function () {     var str = "kgopelo name in place";     createdownloadlink("#export",str,"file.txt"); }); 

thanks in advanced.

you need replace jquery functions plain javascript.

1. $(anchorselector) -> may replaced getelementbyid or getelementbyclassname
2. .click -> how catch click event plain javascript?
3. attr -> i want use javascript insert attribute element
4. $(function(){ -> run function when page loaded