~~~ const u = navigator.userAgent; const isAndroid = u.indexOf('Android') > -1 || u.indexOf('Adr') > -1; //android终端 const isIOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端 const isWeixin = u.toLocaleLowerCase().match(/micromessenger/i) == 'micromessenger'; //微信浏览器 ~~~