[jQuery] array find (more of a JS question) and regex (regular expression)

[jquertil]

okay i hope no one flames me for posting something thats really about
javascript, but then again my toiling is ultimately geared towards a
jquery plugin, so maybe you will forgive me...

the code sample below uses a prototype function that searches an
array. There is a sampe array, and then I am trying to test it with
the alert().

it works fine when I just search for something like 30 or
"blue" (uncomment the other vars below to check for yourself), but it
returns FALSE if I use a regex. The prototype seems to be commonly
known because it's the only one I keep coming across when searching
fopr this...

Anybody got any ideas on how to make the regex work? I've searched all
evening...

Thanks!

Array.prototype.find = function(searchStr) {
  var returnArray = false;
  for (i=0; i<this.length; i++) {
    if (typeof(searchStr) == 'function') {
      if (searchStr.test(this[i])) {
        if (!returnArray) { returnArray = [] }
        returnArray.push(i);
      }
    } else {
      if (this[i]===searchStr) {
        if (!returnArray) { returnArray = [] }
        returnArray.push(i);
      }
    }
  }
  return returnArray;
}



var tmp = [5,9,12,18,56,1,10,42,'blue',30, 7,97,53,'gcycle',
30,35,27,30,'35','Ball', 'bubble'];

var regexp1=tmp.find(/^Bal/);
//var regexp1=tmp.find(/^b/);
//var regexp1=tmp.find(30);


alert(regexp1);