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A web form, also called an HTML form, is an online page that allows for user input. It is an interactive page that mimics a paper document or form, where users fill out particular fields. Web forms can be rendered in modern browsers using HTML and related web-oriented languages.
Typically, a web form contains a combination of form elements such as a checkbox, submit button, text box, etc. For added interactivity, web designers may use elements or classes such as "input" along with "action" and "method" attributes. They can also use the "GET" or "POST" method for submitting data.
Through the careful combination of programmed objects, functions and methods, web designers can create web forms that allow for more sophisticated transactions online. Web forms have revolutionized many fields including real estate, medicine, high finance, retail and numerous other industries where paperwork and documentation play a vital role. Using a combination of standardized web technologies and computer programming principles, IT professionals allow for more of what used to be done on paper to be done online.