DOM operation in JQuery - wrap

wrap: wrap, the usage is $(a).wrap((b)); Wrap a with b (each element will be wrapped)

For example: in body There are three p

	<p>p1</p>
	<p>p2</p>
	<p>p3</p>

Now perform the wrapping operation on p:

$("p").wrap("<p></p>");

The corresponding output is

unwrap: Unwrap

For example, now unwrap the three p’s above:

$("p").unwrap();

wrapAll: All elements are wrapped (all elements will be wrapped together)

For example: perform wrapAll operation on the above three p

$("p").wrapAll("<p></p>");

The output is:

wrapInner: inner wrap

This is to rebuild a new element at the next level inside the element and put all the contents of the parent element Wrap; look directly at the example:

Now there is a p with content and elements inside;

<p>p1 <a href="" title="">连接</a></p>

We perform wrapInner operations on it:

$("p").wrapInner(&#39;<p></p>&#39;);

The output is:

## From this point of view, the inner operation in jquery is very clear.

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