An HTML validator is a quality assurance program used to check
Hypertext Markup Language ( HTML ) markup elements for syntax
errors. A validator can be a useful tool for an HTML user who
receives data electronically from a variety of input sources.
Syntax errors, such as open tags, extra spaces, or forgotten
quotation marks, can cause a Web page to look drastically
different than the creator intended, or render correctly in one
browser , but not in another. Verifying the integrity of HTML
elements manually is repetitive and tedious work; it becomes
even more complicated when different sets of validation rules,
such as those for cascading style sheets ( CSS ) and Extensible
Markup Language ( XML ) are included in the page. By using a
validation program to systematically flag errors, the HTML user
can choose whether to correct code mistakes on a case-by-case
basis or correct them globally by using a "find and replace"
mechanism within the program. A solution is to validate the
value of the HTML...(SearchDomino.