What happens if multiple scripts set [removed]?

Question

There are a number of posts on StackOverflow and other websites regarding the problem of avoiding namespace collisions. In my scenario, I just want a method in my JavaScript to

Answer 1

This is a fine Javascript way to do it right

function addLoadEvent(func) {
 var oldonload = window.onload;
 if (typeof window.onload != 'function') {
    window.onload = func;
 } else {
    window.onload = function() {
    if (oldonload) {
      oldonload();
    }
    func();
   }
 }
}
addLoadEvent(nameOfSomeFunctionToRunOnPageLoad);
addLoadEvent(function() {
   /* more code to run on page load */
});

Explained Source