修复bug

pages/payment/get_payment.vue

@@ -20,7 +20,7 @@
 				<view class="v-con-text">付款金额</view>
 				<view class="v-con-input" style="margin-right: 10px;">
 					<text style="color: #303133;font-size:46rpx;">￥</text>
-					<u--input type="digit" maxlength="7" fontSize="23" v-model="cartForm.total_amount"
+					<u--input type="digit" fontSize="23" v-model="cartForm.total_amount"
 						placeholder="请输入金额" border="none" placeholderStyle="color:#999;font-size:30rpx"
 						@input="validateDecimal">
 					</u--input>
@@ -121,8 +121,10 @@
 		},
 		methods: {
 			validateDecimal(event) {
-				console.log(event);
-				this.checkForm.total_amount = event.match(/^\d*(\.?\d{0,2})/g)[0]
+				let val = (this.cartForm.total_amount.match(/^\d*(\.?\d{0,2})/g)[0]) || ''
+								this.$nextTick(() => {
+									this.cartForm.total_amount = val;
+								})
 			},
 
 			leftClick(e) {