js输入框邮箱自动提示功能代码实现(3)

// 点击文档document时候 下拉框隐藏掉
       $(document).click(function(e){
          e.stopPropagation();
          var target = e.target,
              tagCls = _config.targetCls.replace(/^\./,'');

if(!$(target).hasClass(tagCls)) {
             $('.auto-tip') && $('.auto-tip').each(function(index,item){
                 !$(item).hasClass('hidden') && $(item).addClass('hidden');
             });
          }
       });
    },
    /*
     * 渲染下拉框提示内容
     * @param cfg{object}
     */
    _renderHTML: function(cfg) {
        var self = this,
            _config = self.config,
            _cache = self.cache,
            curVal;
        var curIndex = self._keyCode(cfg.keycode);

        $('.auto-tip',cfg.parentNode).hasClass('hidden') && $('.auto-tip',cfg.parentNode).removeClass('hidden');
        if(curIndex > -1){
            // 键盘上下操作
            self._keyUpAndDown(cfg.targetVal,cfg.e,cfg.parentNode);
        }else {
            if(/@/.test(cfg.targetVal)) {
                curVal = cfg.targetVal.replace(/@.*/,'');
            }else {
                curVal = cfg.targetVal;
            }
            if(_cache.onlyFlag) {
                $(cfg.parentNode).append('<input type="hidden"/>');
                var wrap = '<ul>';

for(var i = 0; i < _config.mailArr.length; i++) {

wrap += '<li>'+'<span></span><em data-html="'+_config.mailArr[i]+'">'+_config.mailArr[i]+'</em></li>';
                }
                wrap += '</ul>';
                _cache.onlyFlag = false;
                $(cfg.parentNode).append(wrap);
                $('.auto-tip',cfg.parentNode).css({'position':'absolute','top':cfg.height,'width':cfg.width - 2 + 'px','left':0,
                    'border':'1px solid #ccc','z-index':10000});
            }

            // 给所有li添加属性 data-html
            $('.auto-tip li',cfg.parentNode).each(function(index,item){
                $('.output-num',item).html(curVal);
                !$('.output-num',item).hasClass(_config.inputValColor) &&
                $('.output-num',item).addClass(_config.inputValColor);
                var emVal = $.trim($('.em',item).attr('data-html'));
                $(item).attr({'data-html':curVal + '' +emVal});
            });

// 精确匹配内容
            self._accurateMate({target:cfg.target,parentNode:cfg.parentNode});