The second parameter of the jQuery () method, the second parameter of jquery

The second parameter of the jQuery () method, the second parameter of jquery

The second parameter of the jQuery () method has the following usage:

1. jQuery (selector, [context])

This usage is equivalent to $ (context). find (selector) or context. find (selector)

2. jQuery (html, [ownerDocument])

The document explains ownerDocument as follows: "Create the document where the DOM element is located"

That is to say, if you want to write a document script, such as iframe, or use window. open to open a new window, you may need it.

3. jQuery (html, props)

This should be more common and you can directly paste the Code:

$ ("<Input>", {type: "text", val: "Test", focusin: function () {$ (this ). addClass ("active") ;}, focusout: function () {$ (this ). removeClass ("active ");}}). appendTo ("form ")

That is to say, attributes in props will be set to the newly created tag like the. attr () method.

Note: IE cannot set the type attribute of input through. attr ().