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Webform
A webform, web form or HTML form on a web page allows a user to enter data that is sent to a server for processing. Forms can resemble paper or database forms because web users fill out the forms using checkboxes, radio buttons, or text fields. For example, forms can be used to enter shipping or credit card data to order a product, or can be used to retrieve search results from a search engine. Description Forms are enclosed in the HTML <form> element. This HTML element specifies the communication endpoint the data entered into the form should be submitted to, and the method of submitting the data, GET or POST. Elements Forms can be made up of standard graphical user interface elements: * <text> — a simple text box that allows input of a single line of text. * <email> - a type of <text> that requires a partially validated email address * <number> - a type of <text> that requires a number * <password> — similar to <tex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Page
A web page (or webpage) is a World Wide Web, Web document that is accessed in a web browser. A website typically consists of many web pages hyperlink, linked together under a common domain name. The term "web page" is therefore a metaphor of paper pages bound together into a book. Navigation Each web page is identified by a distinct URL, Uniform Resource Locator (URL). When the user inputs a URL into their web browser, the browser retrieves the necessary content from a web server and then browser engine, transforms it into an interactive visual representation on the user's screen. If the user point and click, clicks or touchscreen, taps a hyperlink, link, the browser repeats this process to load the new URL, which could be part of the current website or a different one. The browser has web browser#Features, features, such as the address bar, that indicate which page is displayed. Elements A web page is a structured document. The core element is a text file written in the HT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
File Select
In HTML, a file-select control is a component of a web form with which a user can select a local file. When the form is submitted (perhaps together with other form data), the file is uploaded to the web server. There, when the file arrives, some action usually takes place, such as saving the file on the web server. However, the particular action that takes place is determined by the server-side script to which the form is submitted. Code example Here is a code example of a web form with a file-select control. It is the input element with type="file" that creates the file-select control. Rendering When it comes to the rendering on the screen of a file-select control, there is some variation among web browsers. Typically, on a Windows-based platform, user agents will render a file-select control as a text field, together with a "Browse" button. When the "Browse" button is pressed, a file dialog opens, with which actual file selection on one's platform can take pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focus (computing)
In a computing graphical user interface (GUI), a component has focus when it is selected to receive input from the user by an event such as a mouse button click or keypress. Moving the focus away from a specific user interface element is known as a blur event in relation to this element. Typically, the focus is withdrawn from an element by giving another element the focus. This means that focus and blur Event (computing), events are virtually simultaneous in relation to different user interface elements, one that becomes focused and one that is "blurred" (in the computing, not visual, sense). The concept is similar to a Cursor (user interface), cursor in a text-based environment. However, when considering a graphical interface, there is also a mouse pointer involved. Moving the mouse will typically move the mouse pointer without changing the focus. The focus can usually be changed by clicking on a component that can receive focus with the mouse. Many Desktop environment, desktops al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HTML Attribute
HTML attributes are special words used to adjust the behavior or display of an ''HTML element''. An attribute either modifies the default functionality of an element type or provides functionality to certain element types unable to function correctly without them. In HTML syntax, an attribute is added to an '' HTML start tag''. Several basic attributes types have been recognized, including: (1) ''required attributes'' needed by a particular element type for that element type to function correctly; (2) ''optional attributes'' used to modify the default functionality of an element type; (3) ''standard attributes'' supported by many element types; and (4) ''event attributes'' used to cause element types to specify scripts to be run under specific circumstances. Doctype HTML is a declaration that tells the browser what version of HTML the document is written in. Some attribute types function differently when used to modify different element types. For example, the attribute ''name'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JavaScript Library
A JavaScript library is a library of pre-written JavaScript code that allows for easier development of JavaScript-based applications, especially for AJAX and other web-centric technologies. They can be included in a website by embedding it directly in the HTML via a script tag. Libraries With the expanded demands for JavaScript, an easier means for programmers to develop such dynamic interfaces was needed. Thus, JavaScript libraries and JavaScript widget libraries were developed, allowing for developers to concentrate more upon more distinctive applications of Ajax. This has led to other companies and groups, such as Microsoft and Yahoo! developing their own JavaScript-based user interface libraries, which find their way into the web applications developed by these companies. Some JavaScript libraries allow for easier integration of JavaScript with other web development technologies, such as CSS, PHP, Ruby, and Java, while others provide utilities, often in the form of JavaScript ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HTML Element
An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (there are also text nodes, comment nodes and others). The first used version of HTML was written by Tim Berners-Lee in 1993 and there have since been many versions of HTML. The current de facto standard is governed by the industry group WHATWG and is known as the HTML Living Standard. An HTML document is composed of a tree of simple HTML nodes, such as text nodes, and HTML elements, which add semantics and formatting to parts of a document (e.g., make text bold, organize it into paragraphs, lists and tables, or embed hyperlinks and images). Each element can have HTML attributes specified. Elements can also have content, including other elements and text. Concepts Elements vs. tags As is generally understood, the position of an element is indicated as spanning from a start tag and is terminated by an end tag. This is the case for many, but not all, elem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grid View
A grid view or a datagrid is a graphical control element that presents a tabular view of data. A typical grid view also supports some or all of the following: * Clicking a ''column header'' to change the sort order of the grid * Dragging column headers to change their size and their order * In-place editing of viewed data * Row and column separators, and alternating row background colors An interactive live demo example of this type of widget can be seen her Some widget toolkits, these are libraries containing a collection of equally designed graphical control elements, distinguish between a grid and a datagrid. If this is the case, the term datagrid refers specifically to a graphical control element that can be linked to a database with little or no effort from the part of a programmer. They are commonly used to display lists of files, such as the "Details" view in Windows XP file managers. Grid views are sometimes referred to as ''spreadsheet widgets'' (or ''spreads ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tree View
A tree view is a graphical widget (graphical control element) within a graphical user interface (GUI) in which users can navigate and interact intuitively with concise, hierarchical data presented as nodes in a tree-like format. It can also be called an outline view. Appearance A tree view is usually a vertical list of nodes arranged in a tree-like structure. Each node represents a single data item, displayed as an indented line of text or a rectangular box. The indentation (and sometimes a line drawn between nodes) is used to indicate levels of hierarchy. Every treeview has a ''root node'' from which all nodes descend. Below the root node and indented to the right are its child nodes. Each node has exactly one parent node and can have zero or more child nodes. If a node (other than the root node) has a child or children, it is called a ''branch node''. If it has no child, then it is a ''leaf node''. This creates a hierarchical tree-like structure, with branches and subbranches e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drop-down List
A drop-down list (DDL), drop-down menu or just drop-down – also known as a drop menu, pull-down list, picklist – is a graphical control element, similar to a list box, that allows the user to choose one value from a list either by clicking or hovering over the menu. When a drop-down list is inactive, it displays a single value. When activated, it displays (drops down) a list of values, from which the user may select one. When the user selects a new value, the control reverts to its inactive state, displaying the selected value. It is often used in the design of graphical user interfaces, including web design. Terminology This type of control is called a "pop-up menu" on the Macintosh platform; however, the term "pop-up menu" is used to refer to context menus in other GUI systems. The Macintosh also has the notion of "pull-down menus". The distinction is that, when the menu is closed, a pop-up menu's title shows the last-selected item while a pull-down menu shows a static t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
