added on-change event emitter

src/components/carousel/carousel.vue

@@ -186,7 +186,7 @@
                 this.currentIndex = index;
             },
             dotsEvent (event, n) {
-                if (event === this.trigger) {
+                if (event === this.trigger && this.currentIndex !== n) {
                     this.$emit('on-change', this.currentIndex, n);
                     this.currentIndex = n;
                 }
@@ -210,7 +210,8 @@
             autoplaySpeed () {
                 this.setAutoplay();
             },
-            currentIndex () {
+            currentIndex (val, oldVal) {
+                this.$emit('on-change', oldVal, val);
                 this.$nextTick(() => {
                     this.trackLeft = this.currentIndex * this.listWidth;
                 });

test/routers/carousel.vue

@@ -54,6 +54,7 @@
         :dots="dots"
         :trigger="trigger"
         :arrow="arrow"
+        @on-change="slideChange"
         easing="linear">
         <Carousel-item v-if="!remove">
             <Alert type="warning" show-icon>
@@ -71,6 +72,9 @@
             <Icon type="checkmark" style="font-size: 5em"></Icon>{{item}}
         </Carousel-item>
     </Carousel>
+    <div>
+        <p v-for="item in log">{{item}}</p>
+    </div>
 </template>
 <script>
     export default {
@@ -83,12 +87,16 @@
                 pushItem: [],
                 arrow: 'hover',
                 trigger: 'click',
-                dots: 'inside'
+                dots: 'inside',
+                log: []
             }
         },
         methods: {
             push () {
                 this.pushItem.push('test');
+            },
+            slideChange (from, to) {
+                this.log.push(`From ${from} To ${to}`);
             }
         }
     }