Web Form tag & HTML elementsForms are very common in web pages through out Internet. Web forms are mostly used to capture user entered data and post them back to the server. You can see signup forms, login forms, profile update forms and many more type of forms.
How to select a form componentDesigning a form is based on the data format requirement. For example if you want the users to tell about their sex. Here the user will enter one out of the two choices available, so one period button is to be provided for the user to select. Same way one input text box is to be provided for entering name of the joining member. To select a city, user can be given a dropdown listbox showing name of the cities from which user can select.Based on different data format requirements we can keep different form components. Here we will discuss different types of components used to collect data and their possible use. Before that let us try to understand the basic form structure or syntax. Form tagOur form area starts with <form ..> and ends with </form>. All our input fields are to be located between these two tags. These are two boundaries for the data entry. Here is the basic syntax for the form tag.Method attribute of the html formThe method parameter takes two values one is GET and other is POST. In GET method values are passed through the address bar or technically speaking they are passed as query string. We should not pass sensitive information this way as through browser history they can be retrieved. Post method submits the data without using the query string.You can read more on GET & POST methods here. Action attributeThe action attribute takes the name of the file to which the data to be submitted for further processing. It can be a file in the same directory or a file in different directory. We have to give proper path information if they are in different directory. Forms can even submit data to a different web site by using the URL of the site and the particular page by entering the details in action attributes.For example form can submit data to https://www.mysite.com/my_file.php page for processing the entered data of the visitor. If the action tag is left blank then the form will submit the data to itself( same file ). In this case we have to keep the form processing script in the same file. We can give a name to the form by declaring it through name tag. Like this name='f1'. It is easy to get the value of any entry by using name tag of the form like
Applications and uses of html form elements
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