What is the tag that defines the form in html5

html5The tag defining the form is "

". The form tag is used to create an HTML form (form field) for user input to collect and transfer user information. All content in the form will be submitted to the server; the syntax "

form control

". A form can contain one or more form elements, such as input, select, and textarea.

The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 version, Dell G3 computer.

html5The tag defining the form is "

".

html5 form form

The form tag is used to create an HTML form (form field) for user input to realize the collection and delivery of user information. form All content in will be submitted to the server.

The form form field can contain various interactive controls - control labels (text fields, check boxes, radio boxes, submit buttons, etc.), such as , , < ; select>, and other tags.

Label syntax format

    <form action="提交地址" method="提交方式" name="表单名称">
        各种表单控件
    </form>

Four commonly used method submission methods:

get    		一般用来查询信息
post		一般用来新增信息
put      	一般用来修改信息
delete		一般用来删除信息

Control label:

input tag

• The meaning of input is
• <input />The tag is Single tag
• The type attribute sets different attribute values ​​to specify different control types
• In addition to the type attribute, there are other attributes

type="text" is a normal input box and value is the value inside. Name and id will be used when writing js.

    <form action="url地址" method="提交方式" name="表单名称">
        <input type="text" name="" id="" value="你好">
    </form>

Some attributes of the input tag:

The checked attribute is only available for radio buttons and check boxes

##typeTextSingle line text input boxPasswordPassword input boxRadioRadio ButtonText fieldnamevaluesizecheckedMaxlengthPassword box

Attribute	Attribute value	Description
##Checkbox	Checkbox
Button	Normal button
Submit	Submit button
Reset	Reset button
Image	Submit button in image form
##File
	The name of the space
	Default text value in the input control
	The input control is in Display width in the page
	Define the default selected items in the selection space
	The maximum number of characters allowed to be entered by the control

<input type="password" name="" id="" value="">

Radio button box

Smartly select one radio button box with the same name

        男 <input type="radio" name="gender" id="" value=""> 
        女 <input type="radio" name="gender" id="" value="">

Check box

Multiple check boxes can select multiple

        爱好： <br> 
        抽烟<input type="checkbox" name="hobby" id="" value=""> 
        喝酒<input type="checkbox" name="hobby" id="" value=""> 
        烫头<input type="checkbox" name="hobby" id="" value="">

Button

Ordinary buttons can use js to add functions according to requirements

The submit button will submit the entered form information to the action address of the form

The reset button will reset the form information to the default

    <form action="url地址" method="提交方式" name="表单名称">
        <input type="button" name="" id="" value="我是一个普通按钮">
        <input type="submit" name="" id="" value="我是一个提交按钮">
        <input type="reset" name="" id="" value="我是一个重置按钮">
    </form>

##Drop-down box label

The drop-down box label is a bit special. It is not an attribute of the input but a separate label

        <select name="省市区" id="">
            <option value="">山东</option>
            <option value="">北京</option>
            <option value="">江苏</option>
            <option value="">深圳</option>
            <option value="">上海</option>
        </select>

##Related recommendations: "

html video tutorial

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