fix: input trigger multiple change event

Author: tangjinzhou

components/input/Input.jsx

@@ -5,6 +5,8 @@ import inputProps from './inputProps'
 import { hasProp, getComponentFromProp, getStyle, getClass } from '../_util/props-util'
 import { isIE, isIE9 } from '../_util/env'
 
+function noop () {}
+
 function fixControlledValue (value) {
   if (typeof value === 'undefined' || value === null) {
     return ''
@@ -184,6 +186,7 @@ export default {
           ...$listeners,
           keydown: handleKeyDown,
           input: handleChange,
+          change: noop,
         },
         class: classNames(getInputClassName(), getClass(this)),
         ref: 'input',

components/input/TextArea.jsx

@@ -25,6 +25,7 @@ function fixControlledValue (value) {
   }
   return value
 }
+function noop () {}
 
 export default {
   name: 'ATextarea',
@@ -165,6 +166,7 @@ export default {
         ...$listeners,
         keydown: handleKeyDown,
         input: handleTextareaChange,
+        change: noop,
       },
     }
     if ($listeners['change.value']) {