javascript错误

 function ActiveTab() 

{

var a= $find("ctl00_ContentPlaceHolder1_tcEmployee_ClientState").value;

alert("First line");

var add=document.getElementById("ctl00_ContentPlaceHolder1_btnAddRecord");

alert("after add");

var update=document.getElementById("ctl00_ContentPlaceHolder1_btnUpdateRecord");

alert("after update");

var delet= document.getElementById("ctl00_ContentPlaceHolder1_DeleteRecord");

alert("after del");

if(a == 0)

{

alert("if 0");

add.WebForm_PostBackOptions = "Insertion";

update.WebForm_PostBackOptions = "Insertion";

delet.WebForm_PostBackOptions = "Insertion";

}

else if(a == 1)

{

alert("if 1");

add.WebForm_PostBackOptions = "Insertion1";

update.WebForm_PostBackOptions = "Insertion1";

delet.WebForm_PostBackOptions = "Insertion1";

}

else

{

alert("else");

add.WebForm_PostBackOptions = "Insertion2";

update.WebForm_PostBackOptions = "Insertion2";

delet.WebForm_PostBackOptions= "Insertion2";

}

}

什么是我的代码我收到的问题}和;缺失错误,什么是错我的代码javascript错误

回答:

应该是getElementById

var add = document.setElementById("ctl00_ContentPlaceHolder1_btnAddRecord"); 

和失踪=

var delet document.getElementById("ctl00_ContentPlaceHolder1_DeleteRecord"); 

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