程序代码：

function showHidden(){
    //var checkValue =new Array()
    var checkBoxs1 =document.getElementById("FD").checked
    console.log(checkBoxs1);
   // var checkBoxs2 =document.getElementById("BD").checked
    if (checkBoxs1=true){
        document.getElementById("LFD").style.visibility="hidden";
    }
    else{
        document.getElementById("LFD").style.visibility="visible";
    }
}