WebForm下的$.ajax中contentType: “application/json” 的用法

不使用contentType: “application/json”则data可以是对象

 $.ajax({
 url: actionurl,
 type: "POST",
 datType: "JSON",
 data: { id: nodeId },
 async: false,
 success: function () {}
 });

使用contentType: “application/json”则data只能是json字符串

 $.ajax({
 url: actionurl,
 type: "POST",
 datType: "JSON",
 contentType: "application/json"
 data: "{'id': " + nodeId +"}",
 async: false,
 success: function () {}
 });