diff --git a/src/checkbox/demo/index.vue b/src/checkbox/demo/index.vue
index 4afdc48e8..b00a0cd72 100644
--- a/src/checkbox/demo/index.vue
+++ b/src/checkbox/demo/index.vue
@@ -161,6 +161,7 @@ export default {
 
   methods: {
     toggle(index) {
+      // TODO ref in for
       this.$refs.checkboxes[index].toggle();
     },
 
diff --git a/src/picker/demo/index.vue b/src/picker/demo/index.vue
index 270b1a10a..983f09015 100644
--- a/src/picker/demo/index.vue
+++ b/src/picker/demo/index.vue
@@ -157,7 +157,7 @@ export default {
   },
 
   methods: {
-    onChange1(picker, value, index) {
+    onChange1(value, index) {
       this.$toast(this.t('toastContent', value, index));
     },
 
diff --git a/src/rate/index.js b/src/rate/index.js
index 8c366f581..d191d20b0 100644
--- a/src/rate/index.js
+++ b/src/rate/index.js
@@ -58,6 +58,8 @@ export default createComponent({
     },
   },
 
+  emits: ['change', 'update:modelValue'],
+
   created() {
     this.itemRefs = [];
   },