可以用你自己的函数来替换Date函数，以提供你想要的结果，但是在页面使用它之前这样做会很棘手，除非你写一个浏览器扩展。
基本位是（见注解）：

// Save the original `Date` function
const OriginalDate = Date;
// Replace it with our own
Date = function Date(...args) {
    // Called via `new`?
    if (!new.target) {
        // No, just pass the call on
        return OriginalDate(...args);
    }
    // Determine what constructor to call
    const ctor = new.target === Date ? OriginalDate : new.target;
    // Called via `new`
    if (args.length !== 0) {
        // Date constructor arguments were provided, just pass through
        return Reflect.construct(ctor, args);
    }
    // It's a `new Date()` call, mock the date we want; in this
    // example, Jan 1st 2000:
    return Reflect.construct(ctor, [2000, 0, 1]);
};
// Make our replacement look like the original (which has `length = 7`)
// You can't assign to `length`, but you can redefine it
Object.defineProperty(Date, "length", {
    value: OriginalDate.length,
    configurable: true
});

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// Save the original `Date` function
const OriginalDate = Date;
// Replace it with our own
Date = function Date(...args) {
    // Called via `new`?
    if (!new.target) {
        // No, just pass the call on
        return OriginalDate(...args);
    }
    // Determine what constructor to call
    const ctor = new.target === Date ? OriginalDate : new.target;
    // Called via `new`
    if (args.length !== 0) {
        // Date constructor arguments were provided, just pass through
        return Reflect.construct(ctor, args);
    }
    // It's a `new Date()` call, mock the date we want; in this
    // example, Jan 1st 2000:
};
// Make our replacement look like the original (which has `length = 7`)
// You can't assign to `length`, but you can redefine it
Object.defineProperty(Date, "length", {
    value: OriginalDate.length,
    configurable: true
});

console.log("new Date()", new Date());
console.log("new Date(2021, 7, 3)", new Date(2021, 7, 3));

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谢谢你@t-j-crowder，这是我迄今为止找到的最好的解决方案.我对它进行了一些定制，所以Date.now也可以工作。
另外一个建议是，在脚本的开头放置断点，在控制台中运行代码并恢复执行，以获得最佳的日期一致性。
我的修改：

// Save the original `Date` function
const OriginalDate = Date;
const fakeDateArgs = [2022, 5, 3]; // beware month is 0 based
let fakeDate;
// Replace it with our own
Date = function Date(...args) {
    // Called via `new`?
    if (!new.target) {
        // No, just pass the call on
        return OriginalDate(...args);
    }
    // Determine what constructor to call
    const ctor = new.target === Date ? OriginalDate : new.target;
    // Called via `new`
    if (args.length !== 0) {
        // Date constructor arguments were provided, just pass through
        return Reflect.construct(ctor, args);
    }
    // It's a `new Date()` call, mock the date we want; in this
    fakeDate = Reflect.construct(ctor, fakeDateArgs);
    return fakeDate;
};
// Make our replacement look like the original (which has `length = 7`)
// You can't assign to `length`, but you can redefine it
Object.defineProperty(Date, "length", {
    value: OriginalDate.length,
    configurable: true
});

Object.defineProperty(Date, "now", {
    value: () => fakeDate.getTime(),
    configurable: true
});

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您可以在加载内容之前使用此命令修改内容：https://developer.chrome.com/docs/extensions/reference/webRequest/
有一个我没有使用过的扩展可能可以做到这一点：https://chrome.google.com/webstore/detail/page-manipulator/mdhellggnoabbnnchkeniomkpghbekko?hl=en

下面是在浏览器中模拟Date对象的实现。Month总是从零开始，默认日期设置为2024年1月1日，可以更改。这最好仅用于测试目的：

((originalDate) => {
    // Function to mock the Date object
    function MockDate(...args) {
        if (args.length) {
            return new originalDate(...args);
        }
        // Default date: January 1, 2024
        return new originalDate(2024, 0, 1);
    }

    MockDate.prototype = originalDate.prototype;
    MockDate.now = () => new MockDate().getTime();
    MockDate.UTC = originalDate.UTC;
    MockDate.parse = originalDate.parse;

    // Override the global Date object
    Date = MockDate;
})(Date);

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可使用以下设备进行测试：

console.log(new Date());

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