// (B1) PARSER
var result = bowser.getParser(navigator.userAgent).getResult();

// (B2) BROWSER INFO
console.log(result.browser.name);
console.log(result.browser.version);
console.log(result.engine);

// (B3) OPERATING SYSTEM
console.log(result.os.name);
console.log(result.os.version);
console.log(result.os.versionName);

// (B4) PLATFORM
console.log(result.platform.type);

// 桌面浏览器支持检测
if (result.platform.type === 'desktop') {
    var ok = false;
    var version = 0;
    var pos = result.browser.version.indexOf('.');
    if (pos > 0) {
        version = parseInt(result.browser.version.substr(0, pos));
    }
    console.log(version);
    if (result.browser.name === 'Microsoft Edge' && version >= 79) {
        ok = true;
    }
    if (result.browser.name === 'Firefox' && version >= 78) {
        ok = true;
    }
    if (result.browser.name === 'Chrome' && version >= 64) {
        ok = true;
    }
    if (result.browser.name === 'Safari' && version >= 12) {
        ok = true;
    }
    if (result.browser.name === 'WeChat') {// 微信不检查版本
        ok = true;
    }

    if (result.browser.name === 'Electron') {// Electron不检查版本
        ok = true;
    }
    if (!ok) {
        document.getElementById('browser-detect').style.display = "block";
        document.getElementById('app').style.display = "none";
    }
}