jq post

var source=[];
$.ajax({
  type: "post",
  url: "connectdb/select.jsp",
  data: {database: "scmdb", selectsql: sql},
  async: false, method: 'post',
  dataType: "text",
  success: function(data) {
    eval("source="+data+";");
    //source=eval(data);
    alert("正确");
  },
  error: function(err) {
    alert("错误");
  }
});
return source;