JavaScript 只读问题

Question

我正面临 JavaScript 只读字段的问题。我有一个我正在只读的文本框。

 if(val == true)
{    
    ddlCnt.value=objRec.iCntId;
    tAdd1.value=objRec.sAddress1;        
    tAdd2.value=objRec.sAddress2;        
    tCity.value=objRec.sCity;
    tState.value=objRec.sState;
    tZip.value=objRec.sZip;

    //tAdd1.disabled = tAdd2.disabled = tCity.disabled = tState.disabled = tZip.disabled = ddlCnt.disabled = true;
    //tAdd1.disabled = tAdd2.disabled = tCity.disabled = tState.disabled = tZip.disabled = ddlCnt.disabled = true;
    tAdd1.setAttribute("readonly", true);
    tAdd2.setAttribute("readonly", true);
    tCity.setAttribute("readonly", true);
    tState.setAttribute("readonly", true);
    tZip.setAttribute("readonly", true);
}

它工作正常。
现在停用我使用的这个只读属性

else
{    
    tAdd1.value = tAdd2.value = tCity.value = tState.value = tZip.value = "";        
    //tAdd1.disabled = tAdd2.disabled = tCity.disabled = tState.disabled = tZip.disabled = ddlCnt.disabled = false;
    ddlCnt.value="-1";
    vsRec.innerHTML='';     
    tAdd1.setAttribute("readonly", false);
    tAdd2.setAttribute("readonly", false);
    tCity.setAttribute("readonly", false);
    tState.setAttribute("readonly", false);
    tZip.setAttribute("readonly", false);

    //vsRec.style.visibility='hidden';             
}

但它根本不起作用。任何人都可以帮助我解决这个问题，或者任何可以帮助我解决这个问题的建议或提示(以及为什么这不起作用？)。

Answer 1

您需要使用 removeAttribute 删除该属性.

tAdd1.removeAttribute("readonly");
tAdd2.removeAttribute("readonly");
tCity.removeAttribute("readonly");
tState.removeAttribute("readonly");
tZip.removeAttribute("readonly");