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Editor to share with you how to achieve HTML interaction, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to understand it!

1. How does the website interact with users? The answer is to use the HTML form (form). The form can transmit the data entered by the viewer to the server, so that the server-side program can process the data sent by the form.

1)。 Tags appear in pairs, beginning and ending.

2) .action: the place where the data entered by the viewer is transferred, such as a PHP page (save.php).

3) .method: the method of data transfer (get/post).

Example: method= "post" action= "save.php"

two。 The text input box is used when the user wants to type letters, numbers, and so on into the form. Text boxes can also be converted to password input boxes.

1) type:

When type= "text", the input box is the text input box

When type= "password", the input box is the password input box.

2) name: name the text box for use by background programs ASP and PHP.

3) value: sets the default value for the text input box. (it usually serves as a hint)

Example:

3. When users need to enter large chunks of text in the form, they need to use text input fields.

Text 1) tags appear in pairs, beginning and ending.

2) cols: the number of columns in the multi-line input field.

3) rows: the number of rows in the multi-line input field.

4) you can enter default values between tags.

Example:

Enter the content here. 4. Use the checkbox, check box to let the user select

1) type:

When type= "radio", the control is a radio check box

When type= "checkbox", the control is the check box

2) value: value for submitting data to the server (used by daemon PHP)

3) name: name the control for use by background programs ASP and PHP

4) checked: this option is selected by default when setting checked= "checked"

For the same group of radio buttons, the value of name must be consistent, and the value can be inconsistent. For example, the above example is the same name "radioLove", so that the same group of radio buttons can play the role of radio selection.

5. Use the drop-down list box to save space

Option to set the selected= "selected" property, the option is selected by default. 6. The drop-down list can also be used for multi-selection, which can be achieved by setting the multiple= "multiple" attribute in the tag. Under the windows operating system, you can select multiple options by pressing the Ctrl key while clicking (use Command + click under Mac).

Example:

7. The submit button is needed when the user needs to submit form information to the server.

Type: the button will submit only if the type value is set to submit

Value: text displayed on the button

8. You can use the reset button to restore the input box to its original state. Just set type to "reset".

The 9.label tag does not present any special effects to the user, its purpose is to improve usability for mouse users. This control will be triggered if you click the text inside the label tab. That is, when the user clicks to select the label tag, the browser automatically shifts its focus to the form control associated with the tag (the form control associated with the label tag is automatically selected).

The value in the for property of the label must be the same as the value of the id property of the related control.

The function of label is that clicking on the word "male" is equivalent to clicking on the dot after "male".

These are all the contents of the article "how to interact with HTML". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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