set the value null before entering into a condition












1















I want to clear a value when backspace or null value clicked. The first selected value is set always when we click backspace



 onValueChange(e,value)
{
if(e.target === undefined){
this.setState({value:e});
}
else
{
this.setState({value:e.target.value})
}

const { patientsMasterData, addPatientForm } = this.props;
let selectedRefValue = patientsMasterData.ReferredBy.filter(o=> o.RefName === (value.options));
if(selectedRefValue.length !== 0) {

addPatientForm.values.ReferredBy = selectedRefValue[0].RefID;
}
else{
addPatientForm.values.ReferredBy = null;
}
}


How to set the value first as null?










share|improve this question



























    1















    I want to clear a value when backspace or null value clicked. The first selected value is set always when we click backspace



     onValueChange(e,value)
    {
    if(e.target === undefined){
    this.setState({value:e});
    }
    else
    {
    this.setState({value:e.target.value})
    }

    const { patientsMasterData, addPatientForm } = this.props;
    let selectedRefValue = patientsMasterData.ReferredBy.filter(o=> o.RefName === (value.options));
    if(selectedRefValue.length !== 0) {

    addPatientForm.values.ReferredBy = selectedRefValue[0].RefID;
    }
    else{
    addPatientForm.values.ReferredBy = null;
    }
    }


    How to set the value first as null?










    share|improve this question

























      1












      1








      1








      I want to clear a value when backspace or null value clicked. The first selected value is set always when we click backspace



       onValueChange(e,value)
      {
      if(e.target === undefined){
      this.setState({value:e});
      }
      else
      {
      this.setState({value:e.target.value})
      }

      const { patientsMasterData, addPatientForm } = this.props;
      let selectedRefValue = patientsMasterData.ReferredBy.filter(o=> o.RefName === (value.options));
      if(selectedRefValue.length !== 0) {

      addPatientForm.values.ReferredBy = selectedRefValue[0].RefID;
      }
      else{
      addPatientForm.values.ReferredBy = null;
      }
      }


      How to set the value first as null?










      share|improve this question














      I want to clear a value when backspace or null value clicked. The first selected value is set always when we click backspace



       onValueChange(e,value)
      {
      if(e.target === undefined){
      this.setState({value:e});
      }
      else
      {
      this.setState({value:e.target.value})
      }

      const { patientsMasterData, addPatientForm } = this.props;
      let selectedRefValue = patientsMasterData.ReferredBy.filter(o=> o.RefName === (value.options));
      if(selectedRefValue.length !== 0) {

      addPatientForm.values.ReferredBy = selectedRefValue[0].RefID;
      }
      else{
      addPatientForm.values.ReferredBy = null;
      }
      }


      How to set the value first as null?







      reactjs






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 26 '18 at 8:55









      Mily AlfradMily Alfrad

      156216




      156216
























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