About input (both the old and new attributes deserve our attention)

Input, commonly used tags, HTML5 before the usual form:

Properties	value	Description
Accept	Mime_type	Specifies the type of file submitted through the file.
Alt	Text	Defines alternate text for image input.
AutoComplete	On Off	Specifies whether to use the auto-complete feature of the input field.
Autofocus	Autofocus	Specifies whether the input field receives focus when the page is loaded. (Not applicable for type= "hidden")
Checked	Checked	Specifies that this input element should be selected when it is first loaded.
Disabled	Disabled	This element is disabled when the INPUT element is loaded.
Form	FormName	Specifies one or more forms to which the input field belongs.
FormAction	Url	Overrides the form's Action property. (For type= "submit" and type= "image")
Formenctype	See note	Overrides the Enctype property of the form. (For type= "submit" and type= "image")
FormMethod	Get Post	Overrides the form's Method property. (For type= "submit" and type= "image")
Formnovalidate	Formnovalidate	Overrides the Novalidate property of the form. If this property is used, the form is not validated when it is submitted.
Formtarget	_blank _self _parent _top FrameName	Overrides the target property of the form. (For type= "submit" and type= "image")
Height	Pixels %	Defines the height of the input field. (For type= "image")
List	Datalist-id	Reference the DataList that contains the predefined options for the input field.
Max	Number Date	Specifies the maximum value for the input field. Use with the Min property to create a range of legal values.
MaxLength	Number	Specifies the maximum length of characters in the input field.
Min	Number Date	Specifies the minimum value for the input field. Use with the Max property to create a range of legal values.
Multiple	Multiple	If you use this property, more than one value is allowed.
Name	Field_name	Defines the name of the INPUT element.
Pattern	Regexp_pattern	A pattern or format that specifies the value of the input field. For example pattern= "[0-9]" indicates that the input value must be a number between 0 and 9.
Placeholder	Text	Provides tips for helping users fill in input fields.
ReadOnly	ReadOnly	Specifies that the input field is read-only.
Required	Required	Indicates that the value of the input field is required.
Size	Number_of_char	Defines the width of the input field.
Src	Url	Defines the URL of an image to display as a Submit button.
Step	Number	Specifies the legal number interval for the input word.
Type	button CheckBox File Hidden Image Password Radio Reset Submit Text	Specifies the type of the INPUT element.
Value	Value	Specifies the value of the INPUT element.
Width	Pixels %	Defines the width of the input field. (For type= "image")

About input (both the old and new attributes deserve our attention)