// https://github.com/VerbalExpressions/JSVerbalExpressions
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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