Javscript - VerbalExpression to Construct RegExr

var tester = VerEx() .startOfLine() .then( "http" ) .maybe( "s" ) .then( "://" ) .maybe( "www." ) .anythingBut( " " ) .endOfLine(); var test1 = "https://www.google.com"; var test2 = "ftp://google.com"; var r = document.getElementById('results'); function write(x){r.innerHTML += "<li>"+x+"</li>"} write("regEx: " + tester) write("Testing: " + test1) write(tester.test(test1) ? "Result: Good URL" : "Result: Bad URL") write("Testing: " + test2) write(tester.test(test2) ? "Result: Good URL" : "Result: Bad URL") /* HTML <div> <h2><a target='_blank' href='http://www.javascriptoo.com/verbalexpressions'>VerbalExpressions</a><br><h5>a JavaScript library that helps to construct hard regular expressions.</h5></h2> </div> <ul id="results"></ul> */ /* OUTPUT regEx: /^(http)(s)?(\:\/\/)(www\.)?([^\ ]*)$/gm Testing: https://www.google.com Result: Good URL Testing: ftp://google.com Result: Bad URL */
http://www.javascriptoo.com/verbalexpressions - a JavaScript library that helps to construct hard regular expressions. This ends up being a good way to start a structured RegEx but ultimately they need cleaned up depending on your goals. https://regex101.com and http://regexr.com are good testers. Things like `Range` are good but I haven't found a way to add a `+` next to it for matches beyond a single character.

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