modify the UA of chrome

change-chrome-ua.js

var actualCode =  '(' + function() {
    'use strict';
    var navigator = window.navigator;
    var modifiedNavigator;
    if ('userAgent' in Navigator.prototype) {
        // Chrome 43+ moved all properties from navigator to the prototype,
        // so we have to modify the prototype instead of navigator.
        modifiedNavigator = Navigator.prototype;

    } else {
        // Chrome 42- defined the property on navigator.
        modifiedNavigator = Object.create(navigator);
        Object.defineProperty(window, 'navigator', {
            value: modifiedNavigator,
            configurable: false,
            enumerable: false,
            writable: false
        });
    }
    // Pretend to be Windows XP
    Object.defineProperties(modifiedNavigator, {
        userAgent: {
            // value: navigator.userAgent.replace(/\([^)]+\)/, 'Windows NT 5.1'),
            value: 'Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 wxwork/3.1.3 MicroMessenger/7.0.1 Language/zh',
            configurable: false,
            enumerable: true,
            writable: false
        },
        // appVersion: {
        //     value: navigator.appVersion.replace(/\([^)]+\)/, 'Windows NT 5.1'),
        //     configurable: false,
        //     enumerable: true,
        //     writable: false
        // },
        // platform: {
        //     value: 'Win32',
        //     configurable: false,
        //     enumerable: true,
        //     writable: false
        // },
    });
} + ')();';

var s = document.createElement('script');
s.textContent = actualCode;
document.documentElement.appendChild(s);
s.remove();

manifest.json

{
    "name": "chage-navigator-ua",
    "description": "chage-navigator-ua",
    "version": "1",
    "manifest_version": 2,
    "content_scripts": [{
        "run_at": "document_start",
        "js": ["cs.js"],
        "matches": [
            "*://*/*"
        ]
    }]
}