let arr = [
  1,
  "Computer Science",
  5,
  "Computer security",
  6,
  "Graphic design",
  4,
  "Programming language",
  3,
  "Software engineering",
  2,
  "Web Designing",
];
let matchName = "Computer Science";
let num = 0;
arr.map((ele) => {
  ele == matchName ? num++ : "none are match";
});
num > 0
  ? console.log("item are already in the array")
  : console.log("item are not mathced");