浏览器检查块代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> </head> <body> <script> let str = navigator.userAgent.toLowerCase(); console.log(str); if (str.search("firefox") >= 0) { alert("当前浏览器是火狐。"); } else if (str.search("trident") >= 0) { alert("当前浏览器是IE。") } else if (str.search("safari") >= 0) { if (str.search("chrome") >= 0) { alert("当前浏览器是谷歌。") } else if (str.search("opr") >= 0) { alert("当前浏览器是欧朋。") } else { alert("当前浏览器是苹果。") } } else { alert("其他浏览器。") } </script> </body> </html>