js控制控件不可编辑

function Isedit() {
    //document.getElementById("SyTxtBox23_DataControl").disabled = true;
    //document.getElementById("SyTxtBox23_DataControl").readOnly = true;
    document.getElementById("SyTxtBox23_DataControl").disabled=true;
}
window.onload=Isedit;

$(document).ready(function(){
  $("#SyTxtBox35_DataControl").attr("disabled","disabled");
});