'防止多次请求'

@@ -78,6 +78,7 @@ let _getCoin = function(data) {
     });
 };
 
+let isSendCoupon = false;
 let _getCoupon = function(data){
     data.app = utils.queryString();
 
@@ -86,10 +87,16 @@ let _getCoupon = function(data){
     data.app.client_type = data.app.client_type || cookies.cookie('app_client_type');
     data.app.session_key = data.app.session_key || cookies.cookie('app_session_key');
 
+    if (isSendCoupon) {
+        return;
+    }
+
+    isSendCoupon = true;
     jsonp({
         url: '//m.yohobuy.com/activity/feature/couponSend?callback=?',
         data: data
     }).then(function(res) {
+        isSendCoupon = false;
         if (res.code === 200) {
             utils.showTip({
                 title: '领取成功',
@@ -110,6 +117,7 @@ let _getCoupon = function(data){
             });
         }
     }, function(){
+        isSendCoupon = false;
         utils.showTip({
             title: '领取失败<br>请刷新重新领取',
             content: '如多次领取失败，请联系客服人员<br>带来不便敬请谅解',