fix: input value null

src/core/view/components/input/index.vue

@@ -97,7 +97,7 @@ export default {
   },
   data () {
     return {
-      inputValue: this.value + '',
+      inputValue: this._getValueString(this.value),
       composing: false,
       wrapperHeight: 0,
       cachedValue: ''
@@ -133,7 +133,7 @@ export default {
       value && this._focusInput()
     },
     value (value) {
-      this.inputValue = value + ''
+      this.inputValue = this._getValueString(value)
     },
     inputValue (value) {
       this.$emit('update:value', value)
@@ -255,6 +255,9 @@ export default {
         value: this.inputValue,
         key: this.name
       } : {}
+    },
+    _getValueString (value) {
+      return value === null ? '' : String(value)
     }
   }
 }
@@ -295,7 +298,7 @@ uni-input[hidden] {
 }
 
 .uni-input-placeholder,
-.uni-input-input{
+.uni-input-input {
   width: 100%;
 }
 

src/core/view/components/textarea/index.vue

@@ -119,7 +119,7 @@ export default {
   },
   data () {
     return {
-      valueSync: String(this.value),
+      valueSync: this._getValueString(this.value),
       valueComposition: '',
       composition: false,
       focusSync: this.focus,
@@ -152,7 +152,7 @@ export default {
   },
   watch: {
     value (val) {
-      this.valueSync = String(val)
+      this.valueSync = this._getValueString(val)
     },
     valueSync (val) {
       if (val !== this._oldValue) {
@@ -296,6 +296,9 @@ export default {
     },
     _resetFormData () {
       this.valueSync = ''
+    },
+    _getValueString (value) {
+      return value === null ? '' : String(value)
     }
   }
 }