HTML 表单输入类型

; HTML中的标签用于设计Web表单中的交互控件，以接受来自用户端的数据。根据所使用的用户代理和设备，可以使用多种类型的控制小部件和输入数据。 标签是所有 HTML 中使用的最重要的元素之一，因为它具有大量的属性和输入类型组合。在本主题中，我们将学习 HTML 表单输入类型。

标签是 HTML

的重要元素。元素。 中的“type”属性标签可以有多种类型，用于定义信息字段，例如提供一个文本框。 的默认类型是标签是文本。

HTML 中可用的“输入”类型列表

Type	Description	Format	Example
button	Used to define a push button with the text of the button being the value of the value attribute.
checkbox	Used to define a checkbox allowing users to select/deselect its values.		Cricket Tennis Football
file	Used to define a file upload feature on the local system with the accept attribute being used to restrict the file types for upload.		<input type="file" name="newfile">
hidden	Used to hide a control whose value will be submitted on the server. There is an example in the next column, but it’s hidden!
image	A graphical submit button — displaying an image defined with the src attribute. The alt attribute displays if the image src is missing.
password	Used to define a single-line text field whose value is obscured, and it will also alert the user if the site is not secure
radio	Used to define a radio button and select a single value out of multiple.		Red Blue Green
reset	Used to define a button to reset the form values to its defaults.
submit	Used to define a submit button for the form.
text	Used to define a text field in the form.

List of the types of “input” available in HTML5

Type	Description	Format	Example
color	Used to define the color of the elements in an HTML form. It takes a hexadecimal input.
datetime-local	Used to define an element for date and time in the HTML form with opening a date picker or numeric wheels for the month, day, and year, when used in supported browsers.
email	Used to define a text field for email which has all the predefined validations done for checking an email.
date	Used to define a date picker for the HTML form.
number	Used to input numbers in the HTML form by displaying a spinner and adding default validation when used in supported browsers.
range	Used to define a range in the HTML form.
search	Used to define single-line text fields for entering search strings.
tel	Used to define a telephone entering field within an HTML form.
time	Used to define a field for entering time in HTML form
url	Used to define a text field for entering a url in the HTML form with all its validations being performed automatically.
week	Used to define a text field for entering the week-year number and a week number with no time zone.
datetime	Used to define a text field for entering a date and time (hour, minute, second, and fraction of a second) based on the UTC time zone.

属性

以下部分提供了一个表格，列出了所有相关属性以及简要说明。该表后面是更详细地描述每个属性的列表，以及与它们关联的输入类型。下面更详细地定义了大多数或所有输入类型所共有的那些。

Attribute	Types
1.       accept	file
2.       alt	image
3.       autocomplete	all
4.       autofocus	all
5.       capture	file
6.       checked	radio, checkbox
7.       dirname	text, search
8.       disabled	all
9.       form	all
10.    formaction	image, submit
11.    formenctype	image, submit
12.    formmethod	image, submit
13.    formnovalidate	image, submit
14.    formtarget	image, submit
15.    height	image
16.    list	almost all
17.    max	numeric types
18.    maxlength	password, search, tel, text, url
19.    min	numeric types
20.    minlength	password, search, tel, text, url
21.    multiple	email, file
22.    name	all
23.    pattern	password, text, tel
24.    placeholder	password, search, tel, text, url
25.    readonly	almost all
26.    required	almost all
27.    size	email, password, tel, text
28.    src	image
29.    step	numeric types
30.    type	all
31.    value	all
32.    width	image

结论 – HTML 表单输入类型

借助 HTML5 新的表单输入类型，我们可以增强用户体验，打造面向未来的应用程序，并使开发人员的编码变得更加容易。对这些新表单输入类型的支持非常强大，尤其是在带有键盘的移动设备中。这些输入类型对于可用性而言是安全的，并且还为用户提供了额外的实用程序。

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