[javascript] 문자열 포함여부 확인하기 indexOf(), includes()

function solution1(string1, target) {
  return string1.indexOf(target);
}
function solution2(string2, target) {
  return string2.includes(target);
}

let string1 = 'strawberry';
let string2 = 'peach';
let target = ['berry', 'pea'];

for (let i = 0; i < target.length; i++) {
  console.log('solution1', solution1(string1, target[i]));
  console.log('solution2', solution2(string2, target[i]));
}

결과