Conversion between a JQuery object and a DOM object

The jquery object turns into a DOM object:

Two conversions convert a jquery object to a DOM object: [index] and. get (index);

(1) JQuery object is a data object, you can get the corresponding Dom object by means of [index].

such as: Var $v =$ ("#v"); jquery Object

var v= $v [0]; Dom Object

Alert (v.checked)//Detect if this checkbox is selected

(2) jquery itself provides, through the. Get (Index) method, to get the corresponding DOM object

such as: Var $v =$ ("#v"); jquery Object

var v= $v. Get (0); Dom Object

Alert (v.checked)//Detect if this checkbox is selected

The DOM object is turned into a jquery object:

For a DOM object, you can just wrap the DOM object with $ () and you'll get a jquery object. $ (DOM object)

such as: Var V=document.getelementbyid ("V"); Dom Object

var $v =$ (v); jquery Object

After the conversion, you can use the JQuery method arbitrarily.

Conversion between a JQuery object and a DOM object