Html Textarea Placeholder

I have a textarea which when in focus should empty the text holder and when out of focus should get back the original text or retain any text that was wr开发者_运维知识库itten while in focus.

EDIT:

i know how to select the text area. $("textarea").text();

i am not sure how to clear the content when u click on the textarea to nothing and then again get back the content when out of focus.

Just add the placeholder parameter:

<input type="text" name="name" placeholder="input placeholder" />
<textarea name="comment" placeholder="textarea placeholder"></textarea>

It seems you're trying to do the thing where you get instructions in the textarea and then if you delete the value you get the instructions again. Try this

<textarea id="a">Message</textarea>

var standard_message = $('#a').val();
$('#a').focus(
    function() {
        if ($(this).val() == standard_message)
            $(this).val("");
    }
);
$('#a').blur(
    function() {
        if ($(this).val() == "")
            $(this).val(standard_message);
    }
);

You can see it working here.