let exampleString = "3 years,4 Months and 4 days";

const extractYMD = (input) => {
  const stringArray = input.split(' ');
  //split the string on every space
  //it will create an array that looks like this
  //["3","years,","4","Months","and","days"]
  //then you can use the index to find your ints
  const years = parseInt(stringArray[0])
  const months = parseInt(stringArray[2])
  const days = parseInt(stringArray[5])
  //using parseInt because values inside the array are still strings
  //don't need to assign to variables but did it for clarity

  if(years <= 3){
  	console.log('example condition')
  	//do something here
  }
  
  console.log(years,months,days)
  //logging to console so you can see output
  
	return [years,days];
  // return the values if you need them for something
};

extractYMD(exampleString);