1. 相关的html元素
(1) text , edit , passWord , textarea
(2) radio , checkbox
(3) select
2. IE中的写法
(1) document.form_name.text_name.disabled = true;
document.form_name.edit_name.disabled = true;
document.form_name.password_name.disabled = true;
document.form_name.textarea_name.disabled = true;
(2) document.form_name.radio_name[i].disabled = true;
document.form_name.checkbox_name[i].disabled = true;
(3) document.form_name.select_name.disabled = true;
3. Netscape4.76中的写法
(1) document.form_name.text_name.disabled = true;
document.form_name.edit_name.disabled = true;
document.form_name.password_name.disabled = true;
在相应的text , edit , password , textarea 元素上添加对focus事件处理的方法:onfocus=”disableElements(this)”
function disableElements(obj)
{
if(obj.disabled)
{
obj.blur();
}
}
(2) document.form_name.radio_name[i].disabled = true;
document.form_name.checkbox_name[i].disabled = true;
在相应的radio , checkbox元素上添加对mousedown事件处理的方法:onclick=”return disableElements(this)”
function disableElements(obj)
{
if(obj.disabled)
{
obj.checked=false;
return false;;
}
}
(3) document.form_name.select_name.disabled = true;
在相应的select元素上添加对change事件进行处理的方法:onchange=”disableElements(this)”
function disableElements(obj)
{
if (obj.disabled)
{
for (var i=0; i<obj.options.length; i++)
{
obj.options[i].selected = obj.options[i].frozenStatus;
(obj.options[i].selected = false;这样写也可以.)
}
}
}