how to remove Anchor and assign anchor in html

I have a ul:

<ul>
  <li>1</li>
  <li><a href="#">2</a></li>
</ul>

I need a thing that I want to make first li to anchor means

<li>1</li>

to

<li><a href="#">1</li></li>`

and remove anchor from 2开发者_开发问答nd means

<li><a href="#">2</a></li>  to <li>2</li>

How can I do this in jQuery?

---

Very simple method, that "toggles" the links:

$('ul li').each(function() {
    if($(this).find('a').length > 0) {
         $(this).text($(this).text());
    }
    else {
        $(this).html($('<a />').attr('href', '#').text($(this).text()));
    }
});

Example: http://jsfiddle.net/E2ryt/

Update:

From your comment I think you want this:

$('ul li').each(function() {
    $(this).html($('<a />').attr('href', '#').text($(this).text()));
}).click(function() {
     $(this).text($(this).text());
});

But I'm not 100% sure. See here: http://jsfiddle.net/E2ryt/1/

Update 2:

Based on David's comment, you might want this:

var lastClicked = null;

$('ul li').click(function() {
    if(lastClicked) {
        lastClicked.html($('<a />').attr('href', '#').text(lastClicked.text()));
    }
    lastClicked = $(this).text($(this).text());
});

See here: http://jsfiddle.net/E2ryt/2/