请问如何用JS把gridview下的checkbox都readonly

Question

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
                BackColor="White" BorderColor="#3366CC" BorderStyle="None" BorderWidth="1px" 
                CellPadding="4" >
<asp:TemplateField  HeaderText="修改" HeaderStyle-Width="70px" Visible="true" runat="server">
                        <ItemTemplate>
                            <input id="Checkbox1" type="checkbox"  onblur="onChecked(this)" onclick="onChecked(this)" />
                    </asp:TemplateField>如何用JS把gridview下的checkbox都readonly=true,该怎么写？

Answer 1

checkbox readonly？
checkbox不可用, disabled
function onChecked(obj)
{
obj.disabled = true;
}

Answer 2

错了，是用JS把所有textbox都readonly=true,该怎么写？ 在gridview下

Answer 3

checkbox.onclick=function(){return false;};

Answer 4

var options = document.getElementById("gridview1").getElementsByTagName("input");
        for(var i = 0; i < options.length; ++i)
        {
            if(options[i].getAttribute("type") == "text")
            {
                options[i].readOnly = true;
            }
        }