Javascript:将一个值与多个值进行比较的最漂亮的方法

let x = 10;
let y = 20;
if (x == y) {
  console.log("x等于y");
} else {
  console.log("x不等于y");
}

let x = 10;
let y = 20;
if (x !== y) {
  console.log("x不等于y");
} else {
  console.log("x等于y");
}

let x = 10;
let y = 20;
if (x < y) {
  console.log("x小于y");
} else {
  console.log("x大于等于y");
}