diff --git a/dist/field/index.js b/dist/field/index.js
index dba92e0c..5b07135e 100644
--- a/dist/field/index.js
+++ b/dist/field/index.js
@@ -95,6 +95,9 @@ VantComponent({
         onKeyboardHeightChange(event) {
             this.$emit('keyboardheightchange', event.detail);
         },
+        onBindNicknameReview(event) {
+            this.$emit('nicknamereview', event.detail);
+        },
         emitChange(detail) {
             const { extraEventParams } = this.data;
             this.setData({ value: detail.value });
diff --git a/dist/field/input.wxml b/dist/field/input.wxml
index c10f4c41..86b288b9 100644
--- a/dist/field/input.wxml
+++ b/dist/field/input.wxml
@@ -27,4 +27,5 @@
   bindfocus="onFocus"
   bindconfirm="onConfirm"
   bindkeyboardheightchange="onKeyboardHeightChange"
+  bindnicknamereview="onBindNicknameReview"
 />
diff --git a/dist/mixins/transition.js b/dist/mixins/transition.js
index 7e4b613c..5b027ed7 100644
--- a/dist/mixins/transition.js
+++ b/dist/mixins/transition.js
@@ -21,7 +21,6 @@ export function transition(showDefaultValue) {
             duration: {
                 type: null,
                 value: 300,
-                observer: 'observeDuration',
             },
             name: {
                 type: String,
diff --git a/dist/stepper/index.js b/dist/stepper/index.js
index 937ae6e4..e49c6a5e 100644
--- a/dist/stepper/index.js
+++ b/dist/stepper/index.js
@@ -128,12 +128,7 @@ VantComponent({
             if (value === '') {
                 return;
             }
-            let formatted = this.filter(value);
-            // limit max decimal length
-            if (isDef(this.data.decimalLength) && formatted.indexOf('.') !== -1) {
-                const pair = formatted.split('.');
-                formatted = `${pair[0]}.${pair[1].slice(0, this.data.decimalLength)}`;
-            }
+            let formatted = this.format(value);
             this.emitChange(formatted);
         },
         emitChange(value) {
diff --git a/lib/field/index.js b/lib/field/index.js
index c20d266b..4fff56ae 100644
--- a/lib/field/index.js
+++ b/lib/field/index.js
@@ -109,6 +109,9 @@ var props_1 = require("./props");
         onKeyboardHeightChange: function (event) {
             this.$emit('keyboardheightchange', event.detail);
         },
+        onBindNicknameReview: function (event) {
+            this.$emit('nicknamereview', event.detail);
+        },
         emitChange: function (detail) {
             var extraEventParams = this.data.extraEventParams;
             this.setData({ value: detail.value });
diff --git a/lib/field/input.wxml b/lib/field/input.wxml
index c10f4c41..86b288b9 100644
--- a/lib/field/input.wxml
+++ b/lib/field/input.wxml
@@ -27,4 +27,5 @@
   bindfocus="onFocus"
   bindconfirm="onConfirm"
   bindkeyboardheightchange="onKeyboardHeightChange"
+  bindnicknamereview="onBindNicknameReview"
 />
diff --git a/lib/mixins/transition.js b/lib/mixins/transition.js
index 17317040..8cc6ca9f 100644
--- a/lib/mixins/transition.js
+++ b/lib/mixins/transition.js
@@ -24,7 +24,6 @@ function transition(showDefaultValue) {
             duration: {
                 type: null,
                 value: 300,
-                observer: 'observeDuration',
             },
             name: {
                 type: String,
diff --git a/lib/stepper/index.js b/lib/stepper/index.js
index 1aa2c27b..7e650a88 100644
--- a/lib/stepper/index.js
+++ b/lib/stepper/index.js
@@ -141,12 +141,7 @@ function equal(value1, value2) {
             if (value === '') {
                 return;
             }
-            var formatted = this.filter(value);
-            // limit max decimal length
-            if ((0, validator_1.isDef)(this.data.decimalLength) && formatted.indexOf('.') !== -1) {
-                var pair = formatted.split('.');
-                formatted = "".concat(pair[0], ".").concat(pair[1].slice(0, this.data.decimalLength));
-            }
+            var formatted = this.format(value);
             this.emitChange(formatted);
         },
         emitChange: function (value) {