Question

Basically I have a script.js in my website that does this:

if (someVar){
   document.write('<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"><\/script>');
}

Now I would like to attack some behaviour:

if (someVar){
   document.write('<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"><\/script>');

  $(document).ready(function(){
     //> Do stuff
  });
}

But I got undeclared function $ in console

Answer 1

document.write writes given string after the script it was called in. If you want to bind to $(document).ready() you can move this part of code to a separate file, that is included after the file with document.write function.