[update] 修改bug80175,81310

src/components/JMultipleDatePicker.vue

@@ -6,7 +6,6 @@
     :ref="fieldName"
     :dropdownClassName="'j-multiple-date-picker ' + fieldName + '-drop'"
     @openChange="handleOpenChange"
-    :getCalendarContainer="(trigger) => trigger.parentNode"
     style="width: 100%"
     v-bind="$attrs"
   >
@@ -57,9 +56,28 @@ export default {
       console.log(open)
       if (open) {
         this.open = open
-        setTimeout(() => {
-          document.getElementsByClassName(this.fieldName + '-drop')[0].children[0].children[0].children[0].children[0].children[0].value = this.checkedValue.join(',')
-        }, 100)
+        this.$nextTick(() => {
+          // 为了固定弹出层，把弹出层dom元素移动
+          const drop = document.getElementsByClassName(this.fieldName + '-drop')[0]
+          const picker = document.getElementById(this.fieldName)
+          // 创建第二层外层元素
+          const outerWrapperTwo = document.createElement('div')
+          outerWrapperTwo.appendChild(drop)
+          // 创建新的外层元素
+          const outerWrapper = document.createElement('div')
+          outerWrapper.style.position = 'absolute'
+          outerWrapper.style.top = '0px'
+          outerWrapper.style.left = '0px'
+          outerWrapper.style.width = '100%'
+          outerWrapper.appendChild(outerWrapperTwo)
+          picker.appendChild(outerWrapper)
+          this.$nextTick(() => {
+            document.getElementsByClassName(this.fieldName + '-drop')[0].children[0].children[0].children[0].children[0].children[0].value = this.checkedValue.join(',')
+          })
+        })
+        // setTimeout(() => {
+        //   document.getElementsByClassName(this.fieldName + '-drop')[0].children[0].children[0].children[0].children[0].children[0].value = this.checkedValue.join(',')
+        // }, 100)
       } else {
         this.open = open
         this.$nextTick(() => {