How to set textarea read-only

You can use the readonly attribute, disabled and readwrite attributes to set the textarea read-only. Detailed introduction: 1. readonly attribute, the value of the readonly attribute is readonly; 2. disabled attribute, the content of the element cannot be changed, because the value of the disabled attribute is disabled; 3. readwrite attribute, the content of the <textarea> element Content can be changed etc.

To set the element in HTML to be read-only, you can use the readonly attribute. This is a boolean property and if set to true, the content of the <textarea> element cannot be changed. If set to false (the default), the content can be changed.

The following is an example of using the readonly attribute to set the element to be read-only:

This is a read-only text area.

In this example, the content of the element cannot be changed because the value of the readonly attribute is readonly (that is, true).

In addition to the readonly attribute, there are some other attributes that can be used to control the read and write permissions of the element, such as the disabled and readwrite attributes. The disabled attribute sets the <textarea> element to a disabled state, making it impossible to change. The readwrite attribute sets the <textarea> element to a readable and writable state so that it can be changed.

The following is an example of using the disabled attribute to set the element to be read-only:

This is a disabled text area.

In this example, the content of the element cannot be changed because the value of the disabled attribute is disabled (that is, true).

The readwrite attribute can be used to set the element to a read-write state, as shown below:

This is a read-write text area.

In this example, (i.e. true).

In short, to set the element in HTML to be read-only, you can use the readonly attribute. The readonly attribute sets the content of the <textarea> element to read-only so that it cannot be changed.

The above is the detailed content of How to set textarea read-only. For more information, please follow other related articles on the PHP Chinese website!