js 模拟form表单post提交

/// form 表单提交
  var form2 = document.createElement("form");
  form2.id="form2";
  form2.method="post";
  form2.action="buildOrder.do";
//地址id
 var address = document.createElement("input");
 address.name="addressId";
 address.type="hidden";
 address.value = orderAddressId;
 form2.appendChild(address);
//购物车id
 var sid = document.createElement("input");
 sid.name="sid";
 sid.type="hidden";
 sid.value = shopCartId;
 form2.appendChild(sid);
//总价
 var total = document.createElement("input");
 total.name="total";
 total.type="hidden";
 total.value = $("#labTotalMoney").text();
 form2.appendChild(total);
 document.body.appendChild(form2);
 form2.submit(); //提交