修改流水金额显示问题

src/components/mine/statement.vue

@@ -14,7 +14,7 @@
 			</view>
 			<view class="right-view">
 				<view :class="['statement-status-view', statementTypeClass]">{{data.status}}</view>
-				<view class="statement-amount-view">+{{data.amount}}</view>
+				<view class="statement-amount-view">{{ fmtAmount }}</view>
 			</view>
 		</view>
 		<view class="line-view"></view>
@@ -52,6 +52,13 @@
 						return 'statement-type-h'
 				}
 			},
+			fmtAmount() {
+				if(this.data.amount > 0) {
+					return (`+${this.data.amount}`)
+				} else {
+					return this.data.amount
+				}
+			},
 			isWarranty() {
 				return this.data.inGuaranteePeriod ? '保内' : '保外'
 			},