Introduction to HTML table and form tags

1. <table> label

1.1 note:Define the table layout in HTML.

Attribute:

: Defines the Border width of the table. The default value is 0, that is, no border.

: Table prompt information. The information displayed when you move the cursor over the table.

Attribute:

: Merge cells horizontally ()

: Merge cells vertically ()

Table title name, age, 3, 22

2. <form> label

Account: password:

: A URL address that specifies where the form sends data.

: Specifies how to encode the form data before sending the form data.

Upload ControlThis value must be used in the form

: Specifies how a form is sent to a specified page.

 

2.4 application scenarios:

 

3. form submission method

3.1.1 note:The value entered in the from form is appended to the URL specified by action and transmitted as a URL link.

localhost:ashxlogin.ashx?login_usernameadminlogin_pswd

=. Multiple variables are separated by symbols.

 

3.2.1 description:The value entered in the from form is appended to the HTML Headers.

3.2.2 example:The same as the get method.

localhost:ashxlogin.ashx

Object

 

You can view the information (Conditions) You want to query at a glance ). Because the information is hidden, it is not convenient to check the query conditions.

The method is appended to the URL to expose sensitive messages. To hide sensitive information.

Although it is convenient to query, because it is appended to the URL, Each browser also has a length limit on the URL. IE: a string of 2048 characters. Chrome and FF may be 8182 characters long. It seems that there is no such restriction.

 

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