function formAppendSubmit(){
  var myform=$('#newArticleForm'); //得到form對(duì)象
  var tmpInput=$("<input type='text' name='blogArticleForm.articleContent'/>");
  tmpInput.attr("value", myUeditor.window.getContentInsideBody());
  myform.append(tmpInput);
  myform.submit();
}

function(event){
  form = $("<form></form>")
  form.attr('action',action)
  form.attr('method','post')
  input1 = $("<input type='hidden' name='input1' />")
  input1.attr('value','input1 value')
  input2 = $("<input type='text' name='textinput' value='text input' />")
  form.append(input1)
  form.append(input2)
  form.appendTo("body")
  form.css('display','none')
  form.submit()
}

$.ajax({
  type: "POST",
  url: www.baidu.com,
  data: $('#formId').serialize(),
  success: function (data) {
  },
  error: function(data) {
  }
});

$.ajax({
  type:"post",
  url: "login.action",
  data: "name="+user + "&chatRoomId="+chatRoomId,
  success:
    function(){
    },
  error:
    function(){
    }
});

function UpladFile(fileUploadId, taskid) {
  var fileObj = document.getElementById(fileUploadId).files[0]; // 獲取文件對(duì)象
  // FormData 對(duì)象
  var form_data = new FormData();
  //form.append("author", "hooyes"); // 可以增加表單數(shù)據(jù)
  form_data.append("taskid", taskid);
  form_data.append("file", fileObj); // 文件對(duì)象
  $.ajax({
    type: "POST",
    dataType: "html",
    url: www.baidu.com,
    data: form_data,
    success: function (data) {
    },
    error: function(data) {
    }
  });
}

<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>