Shulou(Shulou.com)06/02 Report--

This article introduces the relevant knowledge of "detailed interpretation of HTML form". Many people will encounter such a dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

I. form tags and attributes

Action: one of the properties of a form that indicates the program on the server that handles the form output

Method: one of the form properties that tells the browser how to send data to the service and specifies how to send data to the server, using post or get

Password:

1.png

2. The difference between GET method and POST method.

Get method:

GET requests can be cached

GET requests are kept in the browser history

GET requests can be collected as bookmarks

GET requests should not be used when processing sensitive data

GET request has a length limit

GET requests should only be used to retrieve data

POST method:

POST requests will not be cached

POST requests are not retained in the browser history

POST cannot be collected as a bookmark

There is no requirement for data length in POST request

III. Form elements

Name:

Mailbox:

Address:

Gender: male and female

Hobbies: basketball, badminton, football

Today's week: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday

Password:

Confirm password:

The demonstration result of the above code is as follows:

2.png

(1) label

Type attribute: specifies the type of form element. Optional are text, password, checkbox, radio, submit, reset, file, hidden, image and button. Default is text.

Name attribute: specifies the name of the form element

Value attribute: optional, specify the initial value of the form element

Checked: specifies whether the button is selected

Size attribute: specifies the initial width of the form element

Maxlength attribute: specifies the maximum number of characters that can be entered in a text or password element

(2) three buttons

Reset button: reset button to reset the form to its original state

Button button: a normal button that needs to be associated with an event

Read-only and disable settings of the form

Readonly: read-only, data that the web server does not want users to modify, which is displayed in form elements

Disabled: disabled. Only when a certain condition is met can a feature be selected.

Disabled forms are not submitted.

This is the end of the content of "detailed explanation of HTML form". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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