Full version: jsB@nk » Utility » Generator » Simple JavaScript RegEx to Parse Domain Name
URL: https://www.javascriptbank.com/simple-javascript-regex-parse-domain-name.html
There are many JavaScript resources to parse an URL in JavaScript RegEx. And parsing the domain main is easy since there's a lot of trick. This is useful for checking whether there is a third party domain involved in a page.Today, jsB@nk would like to present you another JavaScript example code to parse an URL address using JavaScript RegEx. This JavaScript object is built into 2 JavaScript public methods, we can use them to get domain root of an URL address, or check if whether domain is exist.Other JavaScript RegEx example codes you should try: - getElementsByClassName: Simple Shorthand Way to Get HTML Element by className with RegExp - JavaScript RegEx Example Code for Text Input Limitations - Built-in JavaScript RegEx APIs - RegExp Validation
Full version: jsB@nk » Utility » Generator » Simple JavaScript RegEx to Parse Domain Name
URL: https://www.javascriptbank.com/simple-javascript-regex-parse-domain-name.html
<script type="text/javascript">// Copyright: ivanceras - http://www.ivanceras.com//* This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com*//** * * USAGE: * UriParser.parseRootDomain("http://user:password@www.truste.com.ca:80/pathname?querystring&key=value#fragment"); //= truste.com.ca * UriParser.parseRootDomain("http://google.com.ph/pathname?querystring&key=value#fragment"); //= google.com.ph * UriParser.parseRootDomain("http://www.google.com/pathname?querystring&key=value#fragment"); //= google.com * */var UriParser = { //parse the root domain, exclude the sub domain parseRootDomain : function(url) { var matches = url.match(/^((\w+):\/\/)?((\w+):?(\w+)?@)?([^\/\?:]+):?(\d+)?(\/?[^\?#]+)?\??([^#]+)?#?(\w*)/); //my additional code var theDomain = matches[6]; if(UriParser.isIp(theDomain)){//if it is an ip address return it as domain return theDomain; } var dots = theDomain.split('.'); var n = dots.length; if(n < 3){//google.com, 2 root words concatenate, 1 word as well i.e. localhost return dots.join("."); } else{//should be greater than or equal to 3 dot split ie. adsense.google.com var last = dots[n-1]; var second2l = dots[n-2]; var third2l = dots[n-3]; var ext; var root; if(second2l.length <= 3){//if google.com.ph, or bbc.co.uk ext = second2l +"."+ last; root = third2l; }else{// adsense.google.com ext = last; root = second2l; } var domain = ""+ root + "." + ext; return domain; } }, //private isNumber : function (o) { return !isNaN (o-0); }, //private /** * determines if the url is an ip address */ isIp: function(domain){ var exploded = domain.split('.'); for(var i = 0; i < exploded.length; i++){ if(!UriParser.isNumber(exploded[i])){ return false; } } return true; }, isSameDomain: function(url1, url2){ if(UriParser.parseRootDomain(url1) == UriParser.parseRootDomain(url2)){ return true; } return false; }}</script><h3>Usages:</h3>document.write(UriParser.parseRootDomain("http://user:password@www.truste.com.ca:80/pathname?querystring&key=value#fragment"));<br />document.write(UriParser.parseRootDomain("http://google.com.ph/pathname?querystring&key=value#fragment"));<br />document.write(UriParser.parseRootDomain("http://www.google.com/pathname?querystring&key=value#fragment"));<br />document.write(UriParser.parseRootDomain("http://google.com/pathname?querystring&key=value#fragment"));<br />document.write(UriParser.parseRootDomain("http://localhost/pathname?querystring&key=value#fragment"));<br />document.write(UriParser.parseRootDomain("localhost"));<br />document.write(UriParser.parseRootDomain("http://192.168.1.1/pathname?querystring&key=value#fragment"));<br />document.write(UriParser.isSameDomain("http://www.google.com/pathname?querystring&key=value#fragment", "http://adsense.google.com/?x=123123"))document.write(UriParser.isSameDomain("http://www.blogger.com/navbar.g?targetBlogID=5856931630868336061&blogName=TeamPilipinas.info&publishMode=PUBLISH_MODE_HOSTED&navbarType=BLACK&layoutType=LAYOUTS&searchRoot=http%3A%2F%2Fteampilipinas.info%2Fsearch&blogLocale=en_PH&homepageUrl=http%3A%2F%2Fteampilipinas.info%2F", "blogger.com"));<br /><hr /><h3>Results:</h3><script type="text/javascript">document.write(UriParser.parseRootDomain("http://user:password@www.truste.com.ca:80/pathname?querystring&key=value#fragment") + '<br />');document.write(UriParser.parseRootDomain("http://google.com.ph/pathname?querystring&key=value#fragment") + '<br />');document.write(UriParser.parseRootDomain("http://www.google.com/pathname?querystring&key=value#fragment") + '<br />');document.write(UriParser.parseRootDomain("http://google.com/pathname?querystring&key=value#fragment") + '<br />');document.write(UriParser.parseRootDomain("http://localhost/pathname?querystring&key=value#fragment") + '<br />');document.write(UriParser.parseRootDomain("localhost") + '<br />');document.write(UriParser.parseRootDomain("http://192.168.1.1/pathname?querystring&key=value#fragment") + '<br />');document.write(UriParser.isSameDomain("http://www.google.com/pathname?querystring&key=value#fragment", "http://adsense.google.com/?x=123123"))document.write(UriParser.isSameDomain("http://www.blogger.com/navbar.g?targetBlogID=5856931630868336061&blogName=TeamPilipinas.info&publishMode=PUBLISH_MODE_HOSTED&navbarType=BLACK&layoutType=LAYOUTS&searchRoot=http%3A%2F%2Fteampilipinas.info%2Fsearch&blogLocale=en_PH&homepageUrl=http%3A%2F%2Fteampilipinas.info%2F", "blogger.com"));</script>