How to set select to be read-only and not editable and the value of select to be transferable_HTML/Xhtml_Web page production

1.

This method can make the drop-down box the same as usual and look the same. The only difference is that after you pull down and select, it will not fool you. Selecting is the same as not selecting. Just ignore the customer's choice.

2. Set the disabled attribute

This seems more direct, and intuitively it has a read-only feel, and cannot be clicked or pulled down. The words inside will also turn gray

When the attribute is set to "disabled", the value of the select cannot be passed when submitting the form. Remove the disabled attribute before submitting $("#role").removeAttr(" disabled");

jquery add attribute $("#role").attr("disabled","disabled");