improve: 【前后台】流水号限制长度8位数字，输入框提示：请填写交易流水号后8位数字

src/components/createCom/XhInput.vue

 <!-- *******************  输入框  *******************  -->
 <template>
-  <view :style="{ width: fieldsWidth }">
+  <view :style="{ width: fieldsWidth }" class="input-view-class">
+    <view class="tip-span" v-if="showTip">({{placeholderText}})</view>
     <u-input
       :type="type"
       class="input-item"
@@ -16,6 +17,7 @@
       :cursor-spacing="10"
       :disabled="isDisabled"
       hold-keyboard
+      @blur="showTip=dataValue.length < maxlength && isESerialNum"
     />
     <view class="content" v-if="slotContent">
       <text class="txt">{{ slotContent }}</text>
@@ -52,6 +54,7 @@ export default {
   data() {
     return {
       inputType: 'text',
+      showTip: false,
     }
   },
   computed: {
@@ -105,6 +108,8 @@ export default {
 </script>
 
 <style lang="scss" scoped>
+.input-view-class {
+  position: relative;
 .input-item {
   background: #f4f5f7;
 }
@@ -116,4 +121,13 @@ export default {
     color: #999;
   }
 }
+.tip-span {
+position: absolute;
+    font-size: 28rpx;
+    color: #FA5A49;
+        right: 140rpx;
+    top: -74rpx;
+}
+}
+
 </style>

src/pages/order/complete.vue

@@ -826,11 +826,9 @@ export default {
             if (ele.required) {
               panelResult.required++
               let value = this.form[ele.fieldsName]
-              if (value && !Array.isArray(value)) {
-                // 非付款流水号 || 8位付款流水号
-                if (ele.fieldsName != 'eSerialNum' || value.length == 8) {
+              // "ele.fieldsName != 'eSerialNum' || value.length == 8"  意思是： "非付款流水号 || 8位付款流水号"
+              if (value && !Array.isArray(value) && (ele.fieldsName != 'eSerialNum' || value.length == 8)) {
                   panelResult.submitted++
-                }
               } else if (value && Array.isArray(value) && value.length > 0) {
                 if (ele.fieldsName === 'materialList') {
                   let hasMate = false