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Course Introduction：HTML provides a variety of input types to meet different user input needs. 1. Common text input types include text, password, email, number, tel and url, which are suitable for input in various text and formats. 2. The input types related to time and date are date, time, datetime-local, month and week, providing a date selector to improve accuracy. 3. Select the class input type. The input type includes checkbox, radio, file and range, which are used for multiple selection, multiple selection, file upload and sliding adjustment. 4. Other practical types such as search, color, hidden and submit/reset

2025-07-11 comment 0  155

Course Introduction：HTML5 introduces a variety of new input types to improve form functionality and user experience, including email, number, date, range, etc. The email type is used to enter the email address, supports automatic format verification and mobile device optimization keyboard; number is used for digital input, supports setting minimum, maximum and step size; date provides a built-in date selector and submits in ISO format; range implements sliding bar controls, suitable for scenes such as volume or rating. These input types can be elegantly downgraded to normal text boxes in older browsers, ensuring compatibility while enhancing mobile availability.

2025-07-02 comment 0  428

Course Introduction：The new HTML5 input type improves the form experience, the main methods include: 1. Use email and url types to realize automatic format verification and optimize the mobile keyboard; 2. Use number and range to process numerical input, which are suitable for accurate values ??and sliding selection respectively; 3. Use date series types to call the native date selector to improve time input efficiency. These features reduce the burden of front-end verification, but basic verification still needs to be supplemented by the server. Some types need to be combined with JS libraries to ensure compatibility on old devices.

2025-07-11 comment 0  384

Course Introduction：The key to HTML5 form accessibility design is to use tags and attributes correctly to improve accessibility. First, each form control should use tags and be associated with for/id to help screen readers identify and expand the click area; second, select appropriate input types (such as email, tel, date) to optimize mobile input and assistive technology recognition; third, error prompts should be combined with aria-invalid, role="alert" and aria-describedby to ensure clear and readable; finally, complex form structures should be passed and organized, and contextual descriptions should be provided. Following these steps ensures that all users operate the form smoothly.

2025-07-05 comment 0  425

Course Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...

2025-01-10 comment 0  671

Course Elementary  13772

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82280

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13144

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24589

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27446

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.