JS仿百度搜索自动提示框匹配查询功能(4)

// 如果请求成功后 返回了数据(根据元素的长度来判断) 执行以下操作
        if($('.auto-tips p',targetParent) && $('.auto-tips p',targetParent).length > 0) {

var plen = $('.auto-tips p',targetParent).length,
                keyCode = e.keyCode;
                _cache.oldIndex = _cache.currentIndex;

// 上移操作
            if(keyCode == 38) {
                if(_cache.currentIndex == -1) {
                    _cache.currentIndex = plen - 1;
                }else {
                    _cache.currentIndex = _cache.currentIndex - 1;
                    if(_cache.currentIndex < 0) {
                        _cache.currentIndex = plen - 1;
                    }
                }
                if(_cache.currentIndex !== -1) {

                    !$('.auto-tips .p-index'+_cache.currentIndex,targetParent).hasClass(_config.hoverBg) &&
                    $('.auto-tips .p-index'+_cache.currentIndex,targetParent).addClass(_config.hoverBg).siblings().removeClass(_config.hoverBg);
                    var curAttr = $('.auto-tips .p-index'+_cache.currentIndex,targetParent).attr('data-html'),
                        embId = $('.auto-tips .p-index'+_cache.currentIndex,targetParent).attr('embId');

                    // 判断是否是多选操作 多选操作 暂留接口
                    if(_config.manySelect) {
                        _cache.inputArrs.push(curAttr);
                        _cache.inputArrs = self._unique(_cache.inputArrs);
                        self._manySelect(targetParent);
                    }else {
                        $(_config.targetCls,targetParent).val(curAttr);
                        // 上移操作增加一个属性 当失去焦点时候 判断有没有这个属性
                        if(!$(_config.targetCls,targetParent).attr('up')){
                            $(_config.targetCls,targetParent).attr('up','true');
                        }