dotparams.js

(function () {
var r20 = /%20/g,
	rbracket = /\[\]$/;
	// Serialize an array of form elements or a set of
	// key/values into a query string
jQuery.paramDotted = function( a, traditional ) {
		var s = [],
			add = function( key, value ) {
				// If value is a function, invoke it and return its value
				value = jQuery.isFunction( value ) ? value() : value;
				s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value );
			};

		// Set traditional to true for jQuery <= 1.3.2 behavior.
		if ( traditional === undefined ) {
			traditional = jQuery.ajaxSettings.traditional;
		}

		// If an array was passed in, assume that it is an array of form elements.
		if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
			// Serialize the form elements
			jQuery.each( a, function() {
				add( this.name, this.value );
			});

		} else {
			// If traditional, encode the "old" way (the way 1.3.2 or older
			// did it), otherwise encode params recursively.
			for ( var prefix in a ) {
				buildParams( prefix, a[ prefix ], traditional, add );
			}
		}

		// Return the resulting serialization
		return s.join( ";" ).replace( r20, "+" );
	}

function buildParams( prefix, obj, traditional, add ) {
	if ( jQuery.isArray( obj ) ) {
		// Serialize array item.
		jQuery.each( obj, function( i, v ) {
			if ( traditional || rbracket.test( prefix ) ) {
				// Treat each array item as a scalar.
				add( prefix, v );

			} else {
				// If array item is non-scalar (array or object), encode its
				// numeric index to resolve deserialization ambiguity issues.
				// Note that rack (as of 1.0.0) can't currently deserialize
				// nested arrays properly, and attempting to do so may cause
				// a server error. Possible fixes are to modify rack's
				// deserialization algorithm or to provide an option or flag
				// to force array serialization to be shallow.
				buildParams( prefix + "." + ( typeof v === "object" || jQuery.isArray(v) ? i : "" ), v, traditional, add );
			}
		});

	} else if ( !traditional && obj != null && typeof obj === "object" ) {
		// Serialize object item.
		for ( var name in obj ) {
			buildParams( prefix + "." + name, obj[ name ], traditional, add );
		}

	} else {
		// Serialize scalar item.
		add( prefix, obj );
	}
}

jQuery.param = jQuery.paramDotted

}());