From cc5fa3e7aa9ed271af93dab51623352acbe83ee7 Mon Sep 17 00:00:00 2001
From: yunuo970428 <405378304@qq.com>
Date: Tue, 14 Mar 2023 10:17:02 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E5=96=84=E4=BC=98=E6=83=A0=E5=88=B8--?=
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---
 .../sms/coupon/components/CouponDetail.vue    | 20 ++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/mallplusui-web-admin/src/views/sms/coupon/components/CouponDetail.vue b/mallplusui-web-admin/src/views/sms/coupon/components/CouponDetail.vue
index be30adc..885c539 100644
--- a/mallplusui-web-admin/src/views/sms/coupon/components/CouponDetail.vue
+++ b/mallplusui-web-admin/src/views/sms/coupon/components/CouponDetail.vue
@@ -32,7 +32,7 @@
         <el-input v-model.number="coupon.publishCount" placeholder="只能输入正整数" class="input-width"></el-input>
       </el-form-item>
       <el-form-item label="面额：" prop="amount">
-        <el-input v-model.number="coupon.amount" placeholder="面值只能是数值，限2位小数" class="input-width">
+        <el-input v-model="coupon.amount" @keyup.native="coupon.amount = UpNumber(coupon.amount,2)" placeholder="面值只能是数值，限2位小数" class="input-width">
           <template slot="append">元</template>
         </el-input>
       </el-form-item>
@@ -234,6 +234,24 @@
       this.getProductCateList();
     },
     methods:{
+      UpNumber(val, limit = 2) {
+        val = val.replace(/[^\d.]/g, '') // 保留数字
+        val = val.replace(/^00/, '0.') // 开头不能有两个0
+        val = val.replace(/^\./g, '0.') // 开头为小数点转换为0.
+        val = val.replace(/\.{2,}/g, '.') // 两个以上的小数点转换成一个
+        val = val.replace('.', '$#$').replace(/\./g, '').replace('$#$', '.'); // 只保留一个小数点
+        /^0\d+/.test(val) ? val = val.slice(1) : '' // 两位以上数字开头不能为0
+        const str = '^(\\d+)\\.(\\d{' + limit + '}).*$'
+        const reg = new RegExp(str)
+        if (limit === 0) {
+          // 不需要小数点
+          val = val.replace(reg, '$1')
+        } else {
+          // 通过正则保留小数点后指定的位数
+          val = val.replace(reg, '$1.$2')
+        }
+        return val
+      },
       onSubmit(formName) {
         this.$refs[formName].validate((valid) => {
           if (valid) {