compare

2024年06月17日

柏拉文

越努力，越幸运

一、Object.is

---

function is(x, y) {
    if (x === y) {
      return x !== 0 || 1 / x === 1 / y;
    } else {
      return x !== x && y !== y;
    }
}

二、saeValueZero

---

function saeValueZero() {
    return (
      x === y ||
      (typeof x === "number" && typeof y === "number" && isNaN(x) && isNaN(y))
    );
}

三、lodash.isEqual

---

function isObject(value) {
    return typeof value === "object" && value !== null;
  }

  function isEqual(value, other) {
    if (!isObject(value) || !isObject(other)) {
      return value === other;
    }
    const valueKeys = Object.keys(value);
    const otherKeys = Object.keys(other);
    if (valueKeys.length !== otherKeys.length) {
      return false;
    }
    for (let key in value) {
      if (!isEqual(value[key], other[key])) {
        return false;
      }
    }
    return true;
}