4.10.3 adding up numbers answers2/29/2024 Name, and the server distinguishes which checkbox was checked by seeing which values are submitted Multiple controls can have the same name for example, here we give all the checkboxes the same Radio buttons can be distinguished from each other in the submission by giving them different The same attribute ( name) also specifies the submission name. We already specified the name for the group of radio buttons Submitted data, using the action attribute.įor each form control you want submitted, you then have to give a name that will be used to You also have to specify the URL of the service that will handle the ![]() ![]() This doesn't specify how the form data isĮncoded, though to specify that, you use the enctypeĪttribute. To specify the exact method used, the methodĪttribute is specified on the form element. The exact details for writing a server-side processor are out of scope for this specification.įor the purposes of this introduction, we will assume that the script at is configured to accept submissions using theĪpplication/x-Configuring a form to communicate with a serverįorm submissions are exposed to servers in a variety of ways, most commonly as HTTP GET or POST Instructions: Customer name: Telephone: Email address: Pizza Size Small Medium Large Pizza Toppings Bacon Extra Cheese Onion Mushroom Preferred delivery time: Delivery instructions: įinally, to make the form submittable we use the button element: Customer name: Telephone: Email address: Pizza Size Small Medium Large Pizza Toppings Bacon Extra Cheese Onion Mushroom Preferred delivery time: Delivery instructions: Submit order 4.10.1.2 Implementing the server-side processing for a form Instance, we are going to use it to provide a space for the customer to give delivery The textarea element can be used to provide a multiline text control. Increments, which we can mark up as follows: Customer name: Telephone: Email address: Pizza Size Small Medium Large Pizza Toppings Bacon Extra Cheese Onion Mushroom Preferred delivery time: Pizzeria only delivers between 11am and 9pm, and doesn't promise anything better than 15 minute Minimum time, the maximum time, and the interval between allowed values (in seconds). Of these form controls have attributes to control exactly what values can be specified in thisĬase, three attributes of particular interest are min, max, and step. We can use an input element with its typeĪttribute set to time to ask for a delivery time. To email): Customer name: Telephone: Email address: Pizza Size Small Medium Large Pizza Toppings Bacon Extra Cheese Onion Mushroom ( input elements with their type attribute set ![]() For this purpose, we can use form controls specifically for telephoneĪttribute set to tel) and email addresses The pizzeria for which this form is being written is always making mistakes, so it needs a way These use the input element with a type attribute with the value checkbox: Customer name: Pizza Size Small Medium Large Pizza Toppings Bacon Extra Cheese Onion Mushroom Customer name: Pizza Size Small Medium Large Ĭhanges from the previous step are highlighted. In the fieldset, which has to be a legend element. The title of such a group of controls is given by the first element Of controls together, such as, in this case, the radio buttons, one can use theįieldset element. Given a common name using the name attribute. To make the radio buttons work as a group, they are Radio buttonsĪlso use the input element, this time with a type attribute with the value radio. To let the user select the size of the pizza, we can use a set of radio buttons. Putting this together, here is how one might ask for the customer's name: Customer name: Paragraph, and is typically separated from other parts using p elements. To label a control, the label element is used the label text and theĬontrol itself go inside the label element. MostĬontrols are represented by the input element, which by default provides a textĬontrol. 4.10.1.1 Writing a form's user interfaceįor the purposes of this brief introduction, we will create a pizza ordering form.Īny form starts with a form element, inside which are placed the controls. ![]() Interface, implementing the server-side processing, and configuring the user interface toĬommunicate with the server. Writing a form consists of several steps, which can be performed in any order: writing the user Scripts can augment the user experience or use forms for purposes other than submitting data to a No client-side scripting is needed in many cases, though an API is available so that returning the results of a search orĬalculation). Then be sent to the server for further processing (e.g. A user can interact with such a form, providing data that can Firefox Android 5+ Safari iOS 3.2+ Chrome Android 61+ WebView Android 61+ Samsung Internet 8.0+ Opera Android 47+ 4.10.1 IntroductionĪ form is a component of a web page that has form controls, such as text, buttons, checkboxes,
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