Disable input text box input implementation attribute_HTML/Xhtml_Web page production

Today I want to summarize a few very useful html tags, which are often used in development. People who are not familiar with them may not really understand them. They are:

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readonly, disabled, autocomplete

readonly means that the value of this field cannot be modified and can only be used with type= Used in conjunction with "text", it can be copied, selected, and can receive focus. The passed value will be received in the background.

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disabled means input is disabled The element cannot be edited, copied, selected, cannot receive focus, and the value passed in the background will not be received

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Also you can Shield the input method through css:
Finally, introduce a commonly used tag. Browsers usually record the input input box, so when you input, you often There is a lot of drop-down content, as shown below:
If you want to remove it, it is best to add autocomplete="off". The usage is as follows: autocomplete="off"

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