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updated metadata & made JSLint happy

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This commit is contained in:
Rob Garrison 2012-07-20 19:37:12 -05:00
parent 19341c3262
commit 269b86a23b
1 changed files with 53 additions and 85 deletions
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76
js/jquery.metadata.js
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@ -1,21 +1,19 @@
/* /*
* Metadata - jQuery plugin for parsing metadata from elements * Metadata - jQuery plugin for parsing metadata from elements
* *
* Copyright (c) 2006 John Resig, Yehuda Katz, J<EFBFBD>örn Zaefferer, Paul McLanahan * Copyright (c) 2006 John Resig, Yehuda Katz, Jörn Zaefferer, Paul McLanahan
* *
* Dual licensed under the MIT and GPL licenses: * Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php * http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html * http://www.gnu.org/licenses/gpl.html
* *
* Revision: $Id: jquery.metadata.js 3640 2007-10-11 18:34:38Z pmclanahan $
*
*/ */
/** /**
* Sets the type of metadata to use. Metadata is encoded in JSON, and each property * Sets the type of metadata to use. Metadata is encoded in JSON, and each property
* in the JSON will become a property of the element itself. * in the JSON will become a property of the element itself.
* *
* There are four supported types of metadata storage: * There are three supported types of metadata storage:
* *
* attr: Inside an attribute. The name parameter indicates *which* attribute. * attr: Inside an attribute. The name parameter indicates *which* attribute.
* *
@ -23,7 +21,6 @@
* *
* elem: Inside a child element (e.g. a script tag). The * elem: Inside a child element (e.g. a script tag). The
* name parameter indicates *which* element. * name parameter indicates *which* element.
* html5: Values are stored in data-* attributes.
* *
* The metadata for an element is loaded the first time the element is accessed via jQuery. * The metadata for an element is loaded the first time the element is accessed via jQuery.
* *
@ -47,11 +44,6 @@
* @after $("#one").metadata().item_id == 1; $("#one").metadata().item_label == "Label" * @after $("#one").metadata().item_id == 1; $("#one").metadata().item_label == "Label"
* @desc Reads metadata from a nested script element * @desc Reads metadata from a nested script element
* *
* @example <p id="one" class="some_class" data-item_id="1" data-item_label="Label">This is a p</p>
* @before $.metadata.setType("html5")
* @after $("#one").metadata().item_id == 1; $("#one").metadata().item_label == "Label"
* @desc Reads metadata from a series of data-* attributes
*
* @param String type The encoding type * @param String type The encoding type
* @param String name The name of the attribute to be used to get metadata (optional) * @param String name The name of the attribute to be used to get metadata (optional)
* @cat Plugins/Metadata * @cat Plugins/Metadata
@ -67,7 +59,7 @@ $.extend({
defaults : { defaults : {
type: 'class', type: 'class',
name: 'metadata', name: 'metadata',
cre: /({.*})/, cre: /(\{.*\})/,
single: 'metadata' single: 'metadata'
}, },
setType: function( type, name ){ setType: function( type, name ){
@ -75,60 +67,36 @@ $.extend({
this.defaults.name = name; this.defaults.name = name;
}, },
get: function( elem, opts ){ get: function( elem, opts ){
var settings = $.extend({},this.defaults,opts); var data, m, e, attr,
settings = $.extend({},this.defaults,opts);
// check for empty string in single property // check for empty string in single property
if ( !settings.single.length ) settings.single = 'metadata'; if ( !settings.single.length ) { settings.single = 'metadata'; }
var data = $.data(elem, settings.single); data = $.data(elem, settings.single);
// returned cached data if it already exists // returned cached data if it already exists
if ( data ) return data; if ( data ) { return data; }
data = "{}"; data = "{}";
var getData = function(data) { if ( settings.type === "class" ) {
if(typeof data != "string") return data; m = settings.cre.exec( elem.className );
if ( m ) { data = m[1]; }
if( data.indexOf('{') < 0 ) { } else if ( settings.type === "elem" ) {
data = eval("(" + data + ")"); if( !elem.getElementsByTagName ) { return undefined; }
} e = elem.getElementsByTagName(settings.name);
if ( e.length ) { data = $.trim(e[0].innerHTML); }
} else if ( elem.getAttribute !== undefined ) {
attr = elem.getAttribute( settings.name );
if ( attr ) { data = attr; }
} }
var getObject = function(data) { if ( data.indexOf( '{' ) <0 ) { data = "{" + data + "}"; }
if(typeof data != "string") return data;
data = eval("(" + data + ")"); data = eval("(" + data + ")");
$.data( elem, settings.single, data );
return data; return data;
} }
if ( settings.type == "html5" ) {
var object = {};
$( elem.attributes ).each(function() {
var name = this.nodeName;
if(name.match(/^data-/)) name = name.replace(/^data-/, '');
else return true;
object[name] = getObject(this.nodeValue);
});
} else {
if ( settings.type == "class" ) {
var m = settings.cre.exec( elem.className );
if ( m )
data = m[1];
} else if ( settings.type == "elem" ) {
if( !elem.getElementsByTagName ) return;
var e = elem.getElementsByTagName(settings.name);
if ( e.length )
data = $.trim(e[0].innerHTML);
} else if ( elem.getAttribute != undefined ) {
var attr = elem.getAttribute( settings.name );
if ( attr )
data = attr;
}
object = getObject(data.indexOf("{") < 0 ? "{" + data + "}" : data);
}
$.data( elem, settings.single, object );
return object;
}
} }
}); });