小程序 textarea 穿透

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   <View className='text-area-content'
    onClick={() => this.setState({hiddenTextArea: false})}>
                  {!illnessDesc.symptomDesc 
                  ? 
                  <View className='placeholder'>
                    <Text>请描述症状
                    </Text>
                  </View> 
                  :
                   null
                   }
                  {hiddenTextArea? <View className='text-area-view'>{illnessDesc.symptomDesc}</View>
                    :<Textarea
                    value={illnessDesc.symptomDesc}
                    onBlur={()=>this.onFirstTABlur()}
                      // placeholder='请描述症状'
                    // placeholderClass={'placeholderclass'}
                  />}