js 判断什么浏览器内核

function detectBrowser() {
    var userAgent = navigator.userAgent;
    var browserName = "Unknown";
    var browserVersion = "Unknown";

    if (userAgent.indexOf("Firefox") > -1) {
        browserName = "Mozilla Firefox";
        browserVersion = userAgent.substring(userAgent.indexOf("Firefox") + 8);
    } else if (userAgent.indexOf("SamsungBrowser") > -1) {
        // 三星浏览器
        browserName = "Samsung Internet";
        browserVersion = userAgent.substring(userAgent.indexOf("SamsungBrowser") + 14);
    } else if (userAgent.indexOf("Opera") > -1 || userAgent.indexOf("OPR") > -1) {
        // Opera 8.0+
        browserName = "Opera";
        if(userAgent.indexOf("OPR") > -1){
            browserVersion = userAgent.substring(userAgent.indexOf("OPR") + 4);
        }
        else{
            browserVersion = userAgent.substring(userAgent.indexOf("Opera") + 6);
        }
    } else if (userAgent.indexOf("Trident") > -1) {
        // IE 11
        browserName = "Microsoft Internet Explorer";
        browserVersion = userAgent.substring(userAgent.indexOf("rv") + 3);
    } else if (userAgent.indexOf("Edge") > -1) {
        // Edge (IE 12+)
        browserName = "Microsoft Edge";
        browserVersion = userAgent.substring(userAgent.indexOf("Edge") + 5);
    } else if (userAgent.indexOf("Chrome") > -1) {
        browserName = "Google Chrome";
        browserVersion = userAgent.substring(userAgent.indexOf("Chrome") + 7).split(" ")[0];
    } else if (userAgent.indexOf("Safari") > -1) {
        browserName = "Apple Safari";
        browserVersion = userAgent.substring(userAgent.indexOf("Version") + 8);
    }

    return {
        name: browserName,
        version: browserVersion
    };
}

var browser = detectBrowser();
console.log("Browser Name: " + browser.name);
console.log("Browser Version: " + browser.version);