a way to restore the native escape function after it has been overwritten?

Question

I didn't know you could do this until I had banged my head against the wall on a troublesome bug and finally figured out we were failing because some jquery plugin had overwritten the escape function. So this will put up an alert and docwrite null:

escape = function(a){alert(a)} document.write(escape("Need tips? Visit W3Schools!"));

Cool! (not).

Is there a way to restore the native escape function?

Answer 1

If you can add your code before the plugin - you can "save" the original function:

oldescape = escape;
function fix() {
    escape = oldescape;
}

Answer 2

Create an iframe and get the function from it:

function retrieveNative(native) {
  var iframe = document.createElement('iframe');
  document.body.appendChild(iframe);
  var retrieved = iframe.contentWindow[native];
  document.body.removeChild(iframe);
  return retrieved;
}

window.escape = retrieveNative('escape');