chrome浏览器的flash问题： 2017-12-26 chrome浏览器的flash有无法显示无法正常运行的问题时，解决方法如下：
https://qzonestyle.gtimg.cn/qzone/photo/v7/js/module/flashDetector/flash_tutorial.pdf flash开启指引
chrome://settings/content/flash flash设置
浏览器对象检测
<!doctype html> <html> <head> <meta charset="utf-8"> <title></title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="pragma" content="no-cache"> <script src="http://code.jquery.com/jquery-1.11.0.min.js"></script> <script type="text/javascript"> //javascript获取浏览器内核、版本函数 Browser = { version: "",//版本 core: "",//内核 userAgent: "",//userAgent init: function() {//初始化(遍历img,取出图片url,发ajax请求) var ua = navigator.userAgent.toLowerCase(); var s; var name =''; var ver = 0; Browser.userAgent=ua; //探测浏览器 (s = ua.match(/msie ([d.]+)/)) ? Browser._set("ie", Browser._setVersion(s[1])): (s = ua.match(/firefox/([d.]+)/)) ? Browser._set("firefox", Browser._setVersion(s[1])) : (s = ua.match(/chrome/([d.]+)/)) ? Browser._set("chrome", Browser._setVersion(s[1])) : (s = ua.match(/opera.([d.]+)/)) ? Browser._set("opera", Browser._setVersion(s[1])) : (s = ua.match(/version/([d.]+).*safari/)) ? Browser._set("safari", Browser._setVersion(s[1])) : 0; }, _setVersion: function(ver,floatLength) { ver = ('' + ver).replace(/_/g, '.'); floatLength = floatLength || 1; ver = String(ver).split('.'); ver = ver[0] + '.' + (ver[1] || '0'); ver = Number(ver).toFixed(floatLength); return ver; }, _set: function(bname,bver) { Browser.core=bname; Browser.version=bver; } }; </script> </head> <body> <h1>检测浏览器版本</h1> <div style="display:inline-block;border:1px solid #f90;background:#ffc;padding:10px 20px;"> <script type="text/javascript"> Browser.init(); document.write("<br><b>内核</b> "+Browser.core);//浏览器内核。 document.write("<br><b>版本</b> "+Browser.version);//浏览器版本。 document.write("<br><b>userAgent</b> "+Browser.userAgent);//浏览器信息。 </script> </div> <style type="text/css"> body,div,p{font-size:14px;} .red{color:red;} b{font-style:bold;font-size:18px;color:#00f;margin-right:30px;} h1{background:#adf;border:1px solid #09f;padding-left:20px;} </style> <h1>Screen 对象属性</h1> <script type="text/javascript"> document.write("<p><b>availWidth</b> 返回显示屏幕的宽度 (除 Windows 任务栏之外): <span class='red'>" + screen.availWidth + " </span></p>"); document.write("<p><b>availHeight</b> 返回显示屏幕的高度 (除 Windows 任务栏之外): <span class='red'>" + screen.availHeight + " </span></p>"); document.write("<p><b>bufferDepth</b> 设置或返回调色板的比特深度: <span class='red'>" + screen.bufferDepth + " </span></p>"); document.write("<p><b>colorDepth</b> 返回目标设备或缓冲器上的调色板的比特深度: <span class='red'>" + screen.colorDepth + " </span></p>"); document.write("<p><b>deviceXDPI</b> 返回显示屏幕的每英寸水平点数: <span class='red'>" + screen.deviceXDPI + " </span></p>"); document.write("<p><b>deviceYDPI</b> 返回显示屏幕的每英寸垂直点数: <span class='red'>" + screen.deviceYDPI + " </span></p>"); document.write("<p><b>fontSmoothingEnabled</b> 返回用户是否在显示控制面板中启用了字体平滑: <span class='red'>" + screen.fontSmoothingEnabled + " </span></p>"); document.write("<p><b>height</b> 返回显示屏幕的高度: <span class='red'>" + screen.height + " </span></p>"); document.write("<p><b>logicalXDPI</b> 返回显示屏幕每英寸的水平方向的常规点数: <span class='red'>" + screen.logicalXDPI + " </span></p>"); document.write("<p><b>logicalYDPI</b> 返回显示屏幕每英寸的垂直方向的常规点数: <span class='red'>" + screen.logicalYDPI + " </span></p>"); document.write("<p><b>pixelDepth</b> 返回显示屏幕的颜色分辨率（比特每像素）: <span class='red'>" + screen.pixelDepth + " </span></p>"); document.write("<p><b>updateInterval</b> 设置或返回屏幕的刷新率: <span class='red'>" + screen.updateInterval + " </span></p>"); document.write("<p><b>width</b> 返回显示器屏幕的宽度: <span class='red'>" + screen.width + " </span></p>"); </script> <h1>Navigator 对象属性</h1> <script type="text/javascript"> document.write("<p><b>appCodeName</b> 返回浏览器的代码名: <span class='red'>" + navigator.appCodeName + " </span></p>"); document.write("<p><b>appMinorVersion</b> 返回浏览器的次级版本: <span class='red'>" + navigator.appMinorVersion + " </span></p>"); document.write("<p><b>appName</b> 返回浏览器的名称: <span class='red'>" + navigator.appName + " </span></p>"); document.write("<p><b>appVersion</b> 返回浏览器的平台和版本信息: <span class='red'>" + navigator.appVersion + " </span></p>"); document.write("<p><b>browserLanguage</b> 返回当前浏览器的语言: <span class='red'>" + navigator.browserLanguage + " </span></p>"); document.write("<p><b>cookieEnabled</b> 返回指明浏览器中是否启用 cookie 的布尔值: <span class='red'>" + navigator.cookieEnabled + " </span></p>"); document.write("<p><b>cpuClass</b> 返回浏览器系统的 CPU 等级: <span class='red'>" + navigator.cpuClass + " </span></p>"); document.write("<p><b>onLine</b> 返回指明系统是否处于脱机模式的布尔值: <span class='red'>" + navigator.onLine + " </span></p>"); document.write("<p><b>platform</b> 返回运行浏览器的操作系统平台: <span class='red'>" + navigator.platform + " </span></p>"); document.write("<p><b>systemLanguage</b> 返回 OS 使用的默认语言: <span class='red'>" + navigator.systemLanguage + " </span></p>"); document.write("<p><b>userAgent</b> 返回由客户机发送服务器的 user-agent 头部的值: <span class='red'>" + navigator.userAgent + " </span></p>"); document.write("<p><b>userLanguage</b> 返回 OS 的自然语言设置: <span class='red'>" + navigator.userLanguage + " </span></p>"); </script> <h1>location 对象属性</h1> <script type="text/javascript"> document.write("<p><b>hash</b> 设置或返回从井号 (#) 开始的 URL（锚）: <span class='red'>" + location.hash + " </span></p>"); document.write("<p><b>host</b> 设置或返回主机名和当前 URL 的端口号: <span class='red'>" + location.host + " </span></p>"); document.write("<p><b>hostname</b> 设置或返回当前 URL 的主机名: <span class='red'>" + location.hostname + " </span></p>"); document.write("<p><b>href</b> 设置或返回完整的 URL: <span class='red'>" + location.href + " </span></p>"); document.write("<p><b>pathname</b> 设置或返回当前 URL 的路径部分: <span class='red'>" + location.pathname + " </span></p>"); document.write("<p><b>port</b> 设置或返回当前 URL 的端口号: <span class='red'>" + location.port + " </span></p>"); document.write("<p><b>protocol</b> 设置或返回当前 URL 的协议: <span class='red'>" + location.protocol + " </span></p>"); document.write("<p><b>search</b> 设置或返回从问号 (?) 开始的 URL（查询部分）: <span class='red'>" + location.search + " </span></p>"); //document.write("<p><b>mmmmmmmmmm</b> mmmmmmmmm: <span class='red'>" + location.mmmmmmmm + " </span></p>"); </script> </body> </html>
Chrome 前端调试工具：
Elements 元素
Console 慰问
Sources 来源
找到js文件，打上断点后F5刷新页面。F8是断点，F10是跳到下一步。
Network 网络
Network——>Disable cache 禁用缓存
Performance 性能
Memory 记忆
Application 应用
Security 安全
Audits 审核