Ajax post in Firefox return value a noteworthy place

One notable issue in the post using jquery is that when using $.ajax,
Be sure to note that Ie,chrome and Firefox are a bit different, such as

Java code $.ajax ({type: "POST", url: "<%=basepath%>frontworkflow/frontworkfl Ow!redirecttaskform ", Data:" taskid= "+taskid+" &taskdefid= "+taskdefid+" &state=jquery ", success   : function (data) {alert ("Data is" +data); }

Assuming that the data returned by the server is an address URL string, you will find that an alert Dom object appears under FF.
Originally, the default values of IE and FF are different, IE defaults to HTML format, FF is XmlDocument, IE returns a string if unspecified, and FF returns the Document object. After the callback function, add the return data type, set to text or HTML on the line.
So it is necessary to specify datatype here., must be added:
DataType: ' HTML '