},
grep: function(elems, fn, inv) {
// If a string is passed in for the function, make a function
// for it (a handy shortcut)
if ( fn.constructor == String )
fn = new Function(“a”,”i”,”return ” + fn);
var result = [];
// Go through the array, only saving the items
// that pass the validator function
for ( var i = 0; i < elems.length; i++ )
if ( !inv && fn(elems[i],i) || inv && !fn(elems[i],i) )
result.push( elems[i] );
return result;
},
map: function(elems, fn) {
// If a string is passed in for the function, make a function
// for it (a handy shortcut)
if ( fn.constructor == String )
fn = new Function(“a”,”return ” + fn);
var result = [];
// Go through the array, translating each of the items to their
// new value (or values).
for ( var i = 0; i < elems.length; i++ ) {
var val = fn(elems[i],i);
if ( val !== null && val != undefined ) {
if ( val.constructor != Array ) val = [val];
