Make sure that .data() (no args) returns a list of all the data- properties as well...

diff --git a/src/data.js b/src/data.js
index 732e923..31cdc12 100644 (file)
--- a/src/data.js
+++ b/src/data.js
@@ -135,7 +135,23 @@ jQuery.extend({
 jQuery.fn.extend({
        data: function( key, value ) {
                if ( typeof key === "undefined" ) {
-                       return this.length ? jQuery.data( this[0] ) : null;
+                       var data = null;
+
+                       if ( this.length ) {
+                               var attr = this[0].attributes, name;
+                               data = jQuery.data( this[0] );
+
+                               for ( var i = 0, l = attr.length; i < l; i++ ) {
+                                       name = attr[i].name;
+
+                                       if ( name.indexOf( "data-" ) === 0 ) {
+                                               name = name.substr( 5 );
+                                               dataAttr( this[0], name, data[ name ] );
+                                       }
+                               }
+                       }
+
+                       return data;
 
                } else if ( typeof key === "object" ) {
                        return this.each(function() {
@@ -152,26 +168,7 @@ jQuery.fn.extend({
                        // Try to fetch any internally stored data first
                        if ( data === undefined && this.length ) {
                                data = jQuery.data( this[0], key );
-
-                               // If nothing was found internally, try to fetch any
-                               // data from the HTML5 data-* attribute
-                               if ( data === undefined && this[0].nodeType === 1 ) {
-                                       data = this[0].getAttribute( "data-" + key );
-
-                                       if ( typeof data === "string" ) {
-                                               try {
-                                                       data = data === "true" ? true :
-                                                               data === "false" ? false :
-                                                               data === "null" ? null :
-                                                               !jQuery.isNaN( data ) ? parseFloat( data ) :
-                                                               rbrace.test( data ) ? jQuery.parseJSON( data ) :
-                                                               data;
-                                               } catch( e ) {}
-
-                                       } else {
-                                               data = undefined;
-                                       }
-                               }
+                               data = dataAttr( this[0], key, data );
                        }
 
                        return data === undefined && parts[1] ?
@@ -196,4 +193,31 @@ jQuery.fn.extend({
        }
 });
 
+function dataAttr( elem, key, data ) {
+       // If nothing was found internally, try to fetch any
+       // data from the HTML5 data-* attribute
+       if ( data === undefined && elem.nodeType === 1 ) {
+               data = elem.getAttribute( "data-" + key );
+
+               if ( typeof data === "string" ) {
+                       try {
+                               data = data === "true" ? true :
+                               data === "false" ? false :
+                               data === "null" ? null :
+                               !jQuery.isNaN( data ) ? parseFloat( data ) :
+                                       rbrace.test( data ) ? jQuery.parseJSON( data ) :
+                                       data;
+                       } catch( e ) {}
+
+                       // Make sure we set the data so it isn't changed later
+                       jQuery.data( elem, key, data );
+
+               } else {
+                       data = undefined;
+               }
+       }
+
+       return data;
+}
+
 })( jQuery );

diff --git a/test/unit/data.js b/test/unit/data.js
index b0c9f3f..c867fb5 100644 (file)
--- a/test/unit/data.js
+++ b/test/unit/data.js
@@ -184,14 +184,17 @@ test(".data(String) and .data(String, Object)", function() {
 });
 
 test("data-* attributes", function() {
-       expect(27);
+       expect(33);
        var div = jQuery("<div>"),
-               child = jQuery("<div data-myobj='old data' data-ignored=\"DOM\"></div>");
+               child = jQuery("<div data-myobj='old data' data-ignored=\"DOM\" data-other='test'></div>");
                
        equals( div.data("attr"), undefined, "Check for non-existing data-attr attribute" );
 
        div.attr("data-attr", "exists");
        equals( div.data("attr"), "exists", "Check for existing data-attr attribute" );
+
+       div.attr("data-attr", "exists2");
+       equals( div.data("attr"), "exists", "Check that updates to data- don't update .data()" );
                
        div.data("attr", "internal").attr("data-attr", "external");
        equals( div.data("attr"), "internal", "Check for .data('attr') precedence (internal > external data-* attribute)" );
@@ -205,6 +208,22 @@ test("data-* attributes", function() {
        child.data("ignored", "cache");
        equals( child.data("ignored"), "cache", "Cached data used before DOM data-* fallback");
 
+       var obj = child.data(), check = [ "myobj", "ignored", "other" ], num = 0;
+
+       for ( var i = 0, l = check.length; i < l; i++ ) {
+               ok( obj[ check[i] ], "Make sure data- property exists when calling data-." );
+       }
+
+       for ( var prop in obj ) {
+               num++;
+       }
+
+       equals( num, check.length, "Make sure that the right number of properties came through." );
+
+       child.attr("data-other", "newvalue");
+
+       equals( child.data("other"), "test", "Make sure value was pulled in properly from a .data()." );
+
        child
                .attr("data-true", "true")
                .attr("data-false", "false")