refactor: 重命名部分变量

src/css/layui.css

@@ -860,8 +860,8 @@ hr.layui-border-black{border-width: 0 0 1px;}
 :root .layui-form-selected .layui-edge{margin-top: -9px\0/IE9;}
 .layui-form-selectup dl{top: auto; bottom: 42px;}
 .layui-select-none{margin: 5px 0; text-align: center; color: #999;}
-.layui-select-panel {position: absolute; z-index: 99999999;}
+.layui-select-panel-wrap {position: absolute; z-index: 99999999;}
-.layui-select-panel dl{position: static; display: block;}
+.layui-select-panel-wrap dl{position: relative; display: block; top:0;}
 
 .layui-select-disabled .layui-disabled{border-color: #eee !important;}
 .layui-select-disabled .layui-edge{border-top-color: #d2d2d2}

src/modules/form.js

@@ -382,6 +382,7 @@ layui.define(['lay', 'layer', 'util'], function(exports){
         var TITLE = 'layui-select-title';
         var NONE = 'layui-select-none';
         var CREATE_OPTION = 'layui-select-create-option';
+        var PANEL_WRAP = 'layui-select-panel-wrap'
         var PANEL_ELEM_DATA = 'layui-select-panel-elem-data';
         var selects = elem || elemForm.find('select');
         // 各种事件
@@ -410,6 +411,7 @@ layui.define(['lay', 'layer', 'util'], function(exports){
           // 展开下拉
           var showDown = function(){
             if(isAppendToBody){
+              // 如果追加面板元素后出现滚动条，触发元素宽度可能会有变化，所以先追加面板元素
               reElem.appendTo('body')
                 .show()
                 .css({width: title.width() + 'px'});
@@ -770,9 +772,7 @@ layui.define(['lay', 'layer', 'util'], function(exports){
 
           // 替代元素
           var reElem = $(['<div class="'+ (isSearch ? '' : 'layui-unselect ') + CLASS 
-          ,(disabled ? ' layui-select-disabled' : '')
+          ,(disabled ? ' layui-select-disabled' : '') + '"></div>'].join(''));
-          ,(isCreatable ? ' layui-select-creatable' : '') 
-          ,(isAppendToBody ? ' layui-select-append-to-body' : '') + '"></div>'].join(''));
 
           var triggerElem = $([
             '<div class="'+ TITLE +'">'
@@ -806,14 +806,17 @@ layui.define(['lay', 'layer', 'util'], function(exports){
           
           // 如果已经渲染，则Rerender
           if(hasRender[0]){
-            isAppendToBody && hasRender.data(PANEL_ELEM_DATA).remove();
+            if(isAppendToBody){
+              var panelWrapElem = hasRender.data(PANEL_ELEM_DATA);
+              panelWrapElem && panelWrapElem.remove();
+            }
             hasRender.remove();
           }
           if(isAppendToBody){
             reElem.append(triggerElem);
             othis.after(reElem);
-            var contentWrapElem = $('<div class="layui-form-select layui-select-panel"></div>').append(contentElem)
+            var contentWrapElem = $('<div class="'+ CLASS + ' ' + PANEL_WRAP +'"></div>').append(contentElem);
-            reElem.data(PANEL_ELEM_DATA, contentWrapElem) // 将面板元素对象记录在触发元素 data 中
+            reElem.data(PANEL_ELEM_DATA, contentWrapElem); // 将面板元素对象记录在触发元素 data 中
             events.call(this, contentWrapElem, triggerElem, disabled, isSearch, isCreatable, isAppendToBody);
           }else{
             reElem.append(triggerElem).append(contentElem);