Merge pull request #377 from weineel/286

fix #286

Author: surmon-china

src/swiper.vue

@@ -145,9 +145,11 @@
       bindEvents() {
         const vm = this
         DEFAULT_EVENTS.forEach(eventName => {
-          this.swiper.on(eventName, function() {
-            vm.$emit(eventName, ...arguments)
-            vm.$emit(eventName.replace(/([A-Z])/g, '-$1').toLowerCase(), ...arguments)
+          this.swiper.on(eventName, (...args) => {
+            vm.$emit(eventName, ...args)
+            if (eventName.toLowerCase() !== eventName) {
+              vm.$emit(eventName.replace(/([A-Z])/g, '-$1').toLowerCase(), ...args)
+            }
           })
         })
       }