Find Gridview TextBox in client side using javascript

Find Gridview TextBox value in client side using javascript.

Here this article show show how we can find gridview textbox which is in Template Field.This code validate the Gridview textbox in edit mode.

function ValidateGridEditMode()
        {
            var n = document.getElementById('ctl00_ContentPlaceHolder1_tbcLocation_tpnlCountry_gvEmp').rows.length;
            var i;
            for(i=2; i <=n; i++)
            {              
                if(i<10)
                {
                    txtEmpName=document.getElementById('ctl00_ContentPlaceHolder1_tbcLocation_tpnlCountry_gvEmp_ctl0'+i+'_txtEmpName'); 
                }
                else
                {
                    txtEmpName=document.getElementById('ctl00_ContentPlaceHolder1_tbcLocation_tpnlCountry_gvEmp_ctl'+i+'_txtEmpName'); 
                }
                if(txtEmpName !=null)
                {
                    if(txtEmpName.value == "")
                    {
                        alert("Enter Emp Name...!");  
                        txtEmpName.focus(); 
                        return false;
                    }    
                }        
            }

            return true;
        }