function getNumbersWithFloat(value){
  const arrayOfIndex = value.split(' ');
  const lenValue = arrayOfIndex.length;
  const regExp = /^([0-9]+(.|,)+[0-9])|[0-9]$/;
  let arrayResult = [];
  for(var j=0; j<lenValue; j++){
     const match = regExp.exec(arrayOfIndex[j]);
     if(match != null){
      arrayResult.push(arrayOfIndex[j]);
      console.log(arrayResult);
      }
  }
}
getNumbersWithFloat('string and num 123 and 56K7 3,4 76 9,7, 9.0float');