Regular expression for validating web site address

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In this article I’ll cover two useful regular expressions that often come in handy when writing validation logic for a Web page.

Most programmers will find they need to either validate a URL or an Email at some point, and the example expressions below are the most commonly used versions of each expression.

:ac|ad|aero|ae|af|ag|ai|al|am|an|ao|aq|arpa|ar|asia|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|biz|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|cat|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|coop|com|co|cr|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|info|int|in|io|iq|ir|is|it|je|jm|jobs|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mil|mk|ml|mm|mn|mobi|mo|mp|mq|mr|ms|mt|museum|mu|mv|mw|mx|my|mz|name|na|nc|net|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pro|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tel|tf|tg|th|tj|tk|tl|tm|tn|to|tp|travel|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|xn--0zwm56d|xn--11b5bs3a9aj6g|xn--80akhbyknj4f|xn--9t4b11yi5a|xn--deba0ad|xn--g6w251d|xn--hgbk6aj7f53bba|xn--hlcj6aya9esc7a|xn--jxalpdlp|xn--kgbechtv|xn--zckzah|ye|yt|yu|za|zm|zw)|(?

$&'\(\)\*\ ,;=]|:|@)*)*)|((([a-z]|\d|-|\.|_|~|[\x00A0-\x D7FF\x F900-\x FDCF\x FDF0-\x FFEF])|(%[\da-f])|[! ((([a-z]|\d|-|\.|_|~|[\x00A0-\x D7FF\x F900-\x FDCF\x FDF0-\x FFEF])|(%[\da-f])|[!

It works well for fully qualified URL, but doesnt work if we use URL without http or https That is it validates: but not validates com what i need is that in addition to current behaviour, it validates the url not having http specifying, that is it should validate com too Thanks Friends Manish Sadhwani if your regex processor has trouble. It's not terribly strict, but it matches all standard domain names (but might let slip through some invalid ones). $/xi S#([a-z]([a-z]|\d|\ |-|\.)*):(\/\/(((([a-z]|\d|-|\.|_|~|[\x00A0-\x D7FF\x F900-\x FDCF\x FDF0-\x FFEF])|(%[\da-f])|[! $&'\(\)\*\ ,;=]|:|@) (\/(([a-z]|\d|-|\.|_|~|[\x00A0-\x D7FF\x F900-\x FDCF\x FDF0-\x FFEF])|(%[\da-f])|[! )|((([a-z]|\d|-|\.|_|~|[\x00A0-\x D7FF\x F900-\x FDCF\x FDF0-\x FFEF])|(%[\da-f])|[! $&'\(\)\*\ ,;=]|:|@) (\/(([a-z]|\d|-|\.|_|~|[\x00A0-\x D7FF\x F900-\x FDCF\x FDF0-\x FFEF])|(%[\da-f])|[! $&'\(\)\*\ ,;=]|:) ))\])|((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|(([a-z]|\d|-|\.|_|~|[\x00A0-\x D7FF\x F900-\x FDCF\x FDF0-\x FFEF])|(%[\da-f])|[! )(\/(([a-z]|\d|-|\.|_|~|[\x00A0-\x D7FF\x F900-\x FDCF\x FDF0-\x FFEF])|(%[\da-f])|[! $&'\(\)\*\ ,;=]|:|@)*)*|(\/((([a-z]|\d|-|\.|_|~|[\x00A0-\x D7FF\x F900-\x FDCF\x FDF0-\x FFEF])|(%[\da-f])|[! (\#((([a-z]|\d|-|\.|_|~|[\x00A0-\x D7FF\x F900-\x FDCF\x FDF0-\x FFEF])|(%[\da-f])|[! You can use this tool to test your regular expressions if you don’t have a program on your computer to do so. Alternately, convert the URL to lower case before applying this expression.I have spent quite some time trying to find a good online regular expression testing tool, but every one I have found is either too expensive, or full of advertising, so this tool is definitely worth checking out. To review the structure of the expression; the ^ symbol matches the start of the line and the $ symbol matches the end of the line.

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