build/gpf-debug.js
function (searchElement) {
                var result = -1;
                _gpfArrayEveryOwn(this, function (value, index) {
                    if (value === searchElement) {
                        result = index;
                        return false;
                    }
                    return true;
                }, _gpfArrayGetFromIndex(arguments));
                return result;
            }
function (searchElement) {
                var result = -1;
                _gpfArrayEveryOwn(this, function (value, index) {
                    if (value === searchElement) {
                        result = index;
                        return false;
                    }
                    return true;
                }, _gpfArrayGetFromIndex(arguments));
                return result;
            }
function ( searchElement ) { var result = - 1 ; _gpfArrayEveryOwn ( this , function ( value , index ) { if ( value === searchElement ) { result = index ; return false ; } return true ; } , _gpfArrayGetFromIndex ( arguments ) ) ; return result ; }
Introduced with JavaScript 1.5
Introduced with JavaScript 1 . 5