Why isn't <textarea> self closing? [duplicate]

问题

This question already has answers here:

Why don't self-closing script elements work? (12 answers)

Closed 3 years ago.

I've been wondering why none of the revisions to the HTML specification have ever made textarea able to be self-closing. Lot's of SO questions have answered why it is a separate tag from input, and it makes sense to me that they'd want to preserve it as a separate tag for compatibility, but why wouldn't they make <textarea /> just as valid as <textarea></textarea> since this wouldn't break anything as far as I can tell.

回答1:

Because <input /> can't work like container for text, While <textarea> text goes here</textarea> can work as container for default text!

Here is what explain your curiosity about why they choose to go this way.

textarea {
  width: 300px;
  height: 100px;
}

<!-- Easy way for default input text -->
<textarea>Here is why because text can be input into box like paragraph tag</textarea>

来源：https://stackoverflow.com/questions/34729059/why-isnt-textarea-self-closing