IE8 中，无法用$.focus()设置input的焦点

  me.on("keydown.autoTableEvent", '.waitEdit', function (event) {
                if (event.keyCode == 13) {
                    var idx = opt._waitEdit.index(this);
                    if (idx < opt._waitEdit.length - 1)
                        $(opt._waitEdit[idx + 1]).autoSelectWord();
                    return false;
                }
                if (event.keyCode == 38) {
                    var field = $(this).data('field');
                    var list = opt._waitEdit.filter("[data-field='" + field + "']");//获取当前一列所有的编辑项
                    var idx = list.index(this);
                    if (idx > 0)
                        $(list[idx - 1]).autoSelectWord();
                    return false;
                }
                if (event.keyCode == 40) {
                    var field = $(this).data('field');
                    var list = opt._waitEdit.filter("[data-field='" + field + "']");
                    var idx = list.index(this);
                    if (idx < list.length - 1)
                        $(list[idx + 1]).autoSelectWord();
                    return false;
                }
            })