message: [bugfix] Tabbar: change event
diff: @@ -44,6 +44,7 @@ export default create({
  items() {
  this.setActiveItem();
  },
  +
  value() {
  this.setActiveItem();
  }
  @@ -55,10 +56,13 @@ export default create({
  item.active = index === this.value;
  });
  },
  +
  onChange(active) {
  + if (active !== this.value) {
  this.$emit('input', active);
  this.$emit('change', active);
  }
  }
  + }
  });
  </script>
  