javascript/html - 접속한 브라우저 확인

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접속한 브라우저 체크 : https://rongscodinghistory.tistory.com/59

IE 버전 체크 :

• https://sime.tistory.com/4
• https://stackoverflow.com/questions/7414968/regex-to-check-ie-version

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function isBrowserCheck(){ 
	const agt = navigator.userAgent.toLowerCase(); 
	if (agt.indexOf("chrome") != -1) return 'Chrome'; 
	if (agt.indexOf("opera") != -1) return 'Opera'; 
	if (agt.indexOf("staroffice") != -1) return 'Star Office'; 
	if (agt.indexOf("webtv") != -1) return 'WebTV'; 
	if (agt.indexOf("beonex") != -1) return 'Beonex'; 
	if (agt.indexOf("chimera") != -1) return 'Chimera'; 
	if (agt.indexOf("netpositive") != -1) return 'NetPositive'; 
	if (agt.indexOf("phoenix") != -1) return 'Phoenix'; 
	if (agt.indexOf("firefox") != -1) return 'Firefox'; 
	if (agt.indexOf("safari") != -1) return 'Safari'; 
	if (agt.indexOf("skipstone") != -1) return 'SkipStone'; 
	if (agt.indexOf("netscape") != -1) return 'Netscape'; 
	if (agt.indexOf("mozilla/5.0") != -1) return 'Mozilla'; 
	if (agt.indexOf("msie") != -1) { 
    	let rv = -1; 
		if (navigator.appName == 'Microsoft Internet Explorer') { 
			let ua = navigator.userAgent; var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})"); 
		if (re.exec(ua) != null) 
			rv = parseFloat(RegExp.$1); 
		} 
		return 'Internet Explorer '+rv; 
	} 
}

const browser = isBrowserCheck();

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