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Variables in standard JavaScript have no type attached, so any value (each value has a type) can be stored in any variable. Starting with ES6 , the 6th version of the language, variables could be declared with var for function scoped variables, and let or const which are for block level variables.
A full page of rows and columns would of course not fit into the wiki, but we did take the idea of having cells that could either be input cells or formula cells. The input cells take user input, while formula cells give output. Thus, we introduced a new template, {}, to add a "cell" (input text box) to a page. The cell can have an ID and ...
Example of a web form with name-value pairs. A name–value pair, also called an attribute–value pair, key–value pair, or field–value pair, is a fundamental data representation in computing systems and applications. Designers often desire an open-ended data structure that allows for future extension without modifying existing code or data.
Validating input values of a web form before the data is sent to a web server. Logging data about the user's behavior then sending it to a server. The website owner can use this data for analytics, ad tracking, and personalization. Redirecting a user to another page. Storing and retrieving data on the user's device, via the storage or IndexedDB ...
HTML 5 introduces a number of input tags that can be represented by other interface elements. Some are based upon text input fields and are intended to input and validate specific common data. These include <email> to enter email addresses, <tel> for telephone numbers, <number> for numeric values.
An online rich-text editor is the interface for editing rich text within web browsers, which presents the user with a "what-you-see-is-what-you-get" (WYSIWYG) editing area. The aim is to reduce the effort for users trying to express their formatting directly as valid HTML markup .
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<u> was presentational element of HTML that was originally used to underline text; this usage was deprecated in HTML4 in favor of the CSS style {text-decoration: underline}. [4] In HTML5, the tag reappeared but its meaning was changed significantly: it now "represents a span of inline text which should be rendered in a way that indicates that ...