Validating checkboxes present inside gridview with Javascript

Question

I have 2 checkboxes in a GridView. I want to validate them with JavaScript. This is my aspx code...

Answer 1

MyGridView = document.getElementById('<%= this.MyGridView.ClientID %>');
var Inputs = MyGridView.getElementsByTagName("input");
var chkBox = "chkExists";
for(var n = 0; n < Inputs.length; ++n)
     if(Inputs[n].type == 'checkbox' && 
        Inputs[n].id.indexOf(chkBox,0) >= 0 && 
        Inputs[n].checked)

      return true;   

Similarly you can check for the other checkbox too...