支付金额为0的情况下，微信阻止支付

pages/order/confirm_order.vue

@@ -404,6 +404,13 @@
 			 */
 			showpopupclickdd() {
 				console.log(this.radiovalue)
+				if ( this.radiovalue == 2 && this.listinfo.payAmount <= 0 ) {
+					uni.showToast({
+						title: "支付金额必须大于0",
+						icon: 'none'
+					})
+					return;
+				}
 				uni.showLoading({
 					title: '加载中',
 					mask: true
@@ -433,6 +440,8 @@
 			 * 微信支付
 			 */
 			async showpopupclickdds() {
+				
+				
 				console.log(this.listinfoid)
 				let res = await this.api.payorderPay({
 					orderId: this.listinfoid