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@glesica
Created October 19, 2011 21:11
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attr: function( elem, name, value, pass ) {
var nType = elem.nodeType;
// don't get/set attributes on text, comment and attribute nodes
if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
return undefined;
}
if ( pass && name in jQuery.attrFn ) {
return jQuery( elem )[ name ]( value );
}
// Fallback to prop when attributes are not supported
if ( !("getAttribute" in elem) ) {
return jQuery.prop( elem, name, value );
}
var ret, hooks,
notxml = nType !== 1 || !jQuery.isXMLDoc( elem );
// Normalize the name if needed
if ( notxml ) {
name = jQuery.attrFix[ name ] || name;
hooks = jQuery.attrHooks[ name ];
if ( !hooks ) {
// Use boolHook for boolean attributes
if ( rboolean.test( name ) ) {
hooks = boolHook;
// Use nodeHook if available( IE6/7 )
} else if ( nodeHook ) {
hooks = nodeHook;
}
}
}
if ( value !== undefined ) {
if ( value === null ) {
jQuery.removeAttr( elem, name );
return undefined;
} else if ( hooks && "set" in hooks && notxml && (ret = hooks.set( elem, value, name )) !== undefined ) {
return ret;
} else {
elem.setAttribute( name, "" + value );
return value;
}
} else if ( hooks && "get" in hooks && notxml && (ret = hooks.get( elem, name )) !== null ) {
return ret;
} else {
ret = elem.getAttribute( name );
// Non-existent attributes return null, we normalize to undefined
return ret === null ?
undefined :
ret;
}
}
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