RegExLib.com - The first Regular Expression Library on the Web!

Matches HTML of XML tags, with or without attributes (single-, double-, or non-quoted), closing tags, or self-closing singleton tags.

Matches and segments the sections of an opening tag. For more detailed information refer to this blog entry: http://weblogs.asp.net/dneimke/posts/25616.aspx

Matches HTML Color strings. Like #FFFFFF is white and #000000 is black and #FF0000 is red and so on...

This expression separates a Visual Basic (VB) source code line into the code part and the comment part (if any, following an apostrophe character not enclosed in quote marks).

Removes pesky comments and commented javascript from HTML

This RX is used to find get all named tags in an html string. If you find a problem with it, please email [email protected]

Match any image insert in a tag . simply replace the .jpg in the pattern whit a variable of content type ex:.swf,.js,.gif and loop the pattern to retrieve all tag whit the contenttype pass trought.... Very useful when you have people uploading html document in your site and you want to retrieve all dependecy.

Use this regular expression pattern to get the string1, string2, string3 .... from <blockquote>string1<br>string2<br>string3<br></blockquote>

Find HTML tags that have javascript events attached to them.

Searches for tags and there atributes according to the HTML 2.0 specification to limit length of tags to 72 characters, and length of attribute values to 1024 characters.

Matches a valid "empty" tag (has trailing slash). Note, if you run it against a string such as <img src="test.gif" alt="<hr />"> it will indeed return a match. But, the match is not at character 1 like you'd suspect, but rather it's matching the internal <hr />. If you look at the source of this tag (http://concepts.waetech.com/unclosed_tags/) you'll find a whoe suite of regex's for matching html tags. Using them you could feasibly step though a document and avoid this mismatch as the outer tag would match *in totality* and you'd completely skip this inner match.

The goal of this regular expression is to replace all & (ampersand) characters by & if they are not the start of HTML entities. I used http://www.w3schools.com/html/html_entitiesref.asp as a reference. You can then use RegExp Replace method to do the work. Was helpful for me, might helpful be for you...

Matches the 216 web colors with or without the '#' sign.

Peseudo-HTML code matcher. Allows for one parameter within the first tag (name is optional), the value of which can be optionally delimited by either double or single quotes. Uses backreferencing to ensure that the end and start tags match, and that any single or double quotes match. Very useful for web forums or any situation where users may be prompted to enter text for display on a webpage somewhere, as it can be quickly processed into HTML without allowing HTML to be specified within the input itself (which may pose a security risk).

The regex validate a quoted string in VBScript or Ansi SQL. The string may contain the containing quote character if it is escaped by being doubled up. In VB/VBScript two double quotes within a string enclosed in double qoutes translate into one double quote within the string In SQL two single quotes within a string enclosed in single qoutes translate into one single quote within the string

Capture the attributes "content", "name" and "scheme" used to parse META tags from any XHTML or HTML input. Useful for developers looking for expresions to parse & get Dublin Core single elements from HTML pages.

Simple parser of XPath, it doesn't handle the more complex statements but can be of use in some situations.

This expression validates for valid C# or C++ identifier

A general string validation to insure that NO malicious code or specified characters are passed through user input. This will allow you to input any characters except those specified. The expression above does not allow user input of <>`~!/@\#}$%:;)(_^{&*=|'+. Input as many invalid characters you wish to deny. This really works!