How to set the drop-down box option in html to be unselectable

In HTML, you can disable the specified option and make the specified option unselectable by setting the disabled attribute to the option tag element. The syntax is "option value" .

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

In HTML, you can make the option unselectable by setting the disabled attribute to the option tag element.

The disabled attribute specifies that an option should be disabled. Disabled options are neither available nor clickable.

Syntax:

<option disabled="disabled">

Example:

  Volvo
  Saab
  <option disabled="disabled">Mercedes
  Audi

Application: can be set to disabled Property that restores the user's use of the option until certain conditions are met (such as selecting a checkbox). You can then use JavaScript to clear the disabled attribute so that the option becomes available.

Recommended tutorial: "html video tutorial"

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