jquery metadata Detailed

1.0 is the version of this $.meta
2.0 is the version of this $.metadata
Many plug-ins have been written to use this plugin, the personal feeling that this thing should be the official jquery. It is recommended to use version 2.0,

Because now officially is 2.0 of the document (Http://docs.jquery.com/Plugins/Metadata), 1.0, I have not read, but 2.0 of the example runs very normal.

! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "> 
Translation:
attr: Internal property, parameter name points to property name
Class: Property of the inner class, wrapped with {}
Elem: An inner child element, such as a script tag. The name of the parameter points to the element name.
function:
Metadata (options) return jquery object
Extracts metadata, caches, and returns metadata from the first element of a jquery collection.
Arguments:
Options (Optional) options
A set of key/value pairs that define the type of metadata to extract. All options are optional.
Options:
The options in metadata are available in three types: type, name, single
Type String Default: ' Class ' 
Specifies the expected position of the element. The possible values are "class": Search in the Class attribute, "' Elem": Search for elements within the search element, and "attr": The custom attribute search in the element.
Search for metadata in a class, not in a class.
$ (". Selector"). Metadata ({     type: ' attr ')  
 name String Default: ' Metadata '
When the type is "attr", specify the name of the custom attribute to search for. When the type is "Elem", specify the tag name of the element to search for. 
A custom element property named "jdata" is searched for metadata.
$ (". Selector"). Metadata ({     type: ' attr ',     name: ' Jdata '  })
Single   String Default: ' Metadata '
Given the name of the data extracted from the jquery cache element.
Store and retrieve the cached data extracted into a project named "Jdata in jquery."
$ (". Selector"). Metadata ({single     : ' Jdata '  })  
Examples:
Gets metadata from the class attribute.
<li class= "SomeClass {some: ' data '} anotherclass" >...</li>    <script>alert ($ (' Li.someclass '). Metadata (). some);</script>  
Gets metadata from a custom attribute.
<li data= "{some: ' random ', JSON: ' Data '}" >...</li>  <script>alert ($ (' Li.someclass '). Metadata ( {type: ' attr ', Name: ' Data '}). Some);</script>  
Gets metadata from a child element.
<li class= "SomeClass" ><script type= "Application/json" >{some: "JSON", data:true}</script>...</ Li>  <script>alert ($ (' Li.someclass '). Metadata ({type: ' Elem ', Name: ' Script '}). Some);</script>  
jQuery.metadata.setType (type, name) Returns:null
Sets the default type and name options for all of the following metadata requests.
Arguments:
Typestring
Specifies the expected position of the element. Possible values are "class" (default): Search in Class properties, "Elem": meta-search in meta-search, and "attr": custom attribute search in elements.
Name string
The name of the tag or attribute to search for based on the value of the type option.
Set the metadata plug-in to find custom properties.
<li data= "{some: ' random ', JSON: ' Data '}" class= "SomeClass" >...</li>    <script>  $. Metadata.settype (' attr ', ' data ');  Alert ($ (' Li.someclass '). Metadata (). some);  
jQuery.metadata.get (Elem, Options) Returns:object
Sets the default type and name options for all of the following metadata requests.
Arguments:
Elem Element
The element that contains the metadata to extract.
Options (Optional) options
A set of key/value pairs that define the type of metadata to extract. All options are optional. View the metadata plug-in page for more information.
Set the metadata plug-in to find custom properties.
<li class= "SomeClass {some: ' random ', JSON: ' Data '} ' >...</li>    <script>  $ (' Li.someclass '). each (function () {      var data = $.metadata.get (this);      alert (data.some);  });  </script>  
Example:
<li id= "Li1" class= ' SomeClass {"item_id": 1, "Item_label": "Label"} ' >item 1</li> <li id= ' Li2 ' metadata= ' { "item_id": 1, "Item_label": "Label"} ' >item 2</li> <li id= "Li3" > <metadata style= "Display:none;" >{"item_id": 1, "Item_label": "Label"}</metadata> Item 3 </li> <li id= "Li4" > <script ty Pe= "metadata" >{"item_id": 1, "Item_label": "Label"}</script> Item 4 </li> $ (function () {$ ("#i Tem1 "). Metadata (). item_id; 1 $ ("#item1"). Metadata ({"Type": "Class"}). item_id; 1 $ ("#item2"). Metadata ({"type": "attr"}). Item_label; "Label" $ ("#item2"). Metadata ({"type": "attr", "name": "Metadata"}). Item_label; "Label" $ ("#item3"). Metadata ({"type": "Elem"}). Item_label; "Label" $ ("#item3"). Metadata ({"type": "Elem", "name": "Metadata"}). Item_label; "Label" $ ("#Item4 "). Metadata ({" type ":" Elem "," name ":" Script "}). Item_label;   "Label"});
　　
jquery metadata Detailed