how to add a js condition

Question

Hi
I want to write a condition in JS that will result in adding an external js.
For example if the condition is x > 2 and it is true then i want it to load a different e

Answer 1

  var fileref=document.createElement('script')
  fileref.setAttribute("type","text/javascript")
  if (x > 2){
     fileref.setAttribute("src", "/js/file1.js")
 }else{
     fileref.setAttribute("src", "/js/file2.js")
 }
 document.body.appendChild(fileref);