:: How to get values of all Controls inside a Gridview using Javascript ::

function GetInitialGridValues(grdID) {
        debugger;
        var szAdd = "", szUpdate = "";
        var inputTags;
        var selectTags;
        document.forms[0].hidDefaultValues.value = "";
        document.forms[0].hidDefaultNames.value = "";
        if (grdID != null) {
            inputTags = grdID.getElementsByTagName("input");
            selectTags = grdID.getElementsByTagName("select");
        }  //Here getting all the text box and check boxes
        else {
            alert('grdID is null');
        }
        for (index = 0; index < inputTags.length; index++) {
            if (String(inputTags[index].type) == "text") {
                document.forms[0].hidDefaultNames.value = document.forms[0].hidDefaultNames.value + inputTags[index].id + "~";
                document.forms[0].hidDefaultValues.value = document.forms[0].hidDefaultValues.value + inputTags[index].value + "~";
            }
            else if (String(inputTags[index].type) == "checkbox") {
                document.forms[0].hidDefaultNames.value = document.forms[0].hidDefaultNames.value + inputTags[index].id + "~";
                document.forms[0].hidDefaultValues.value = document.forms[0].hidDefaultValues.value + inputTags[index].checked + "~";
            }
            else if (String(inputTags[index].type) == "radio") {
                document.forms[0].hidDefaultNames.value = document.forms[0].hidDefaultNames.value + inputTags[index].id + "~";
                document.forms[0].hidDefaultValues.value = document.forms[0].hidDefaultValues.value + inputTags[index].checked + "~";
            }
        }
        for (index = 0; index < selectTags.length; index++) {
            if (String(selectTags[index].type) == "select-one") {
                if (selectTags[index].length == 1) {
                    defVal = selectTags[index].options[0].text;
                }
                else {
                    for (var optCounter = 0; optCounter < selectTags[index].length; optCounter++) {
                        if (selectTags[index].options[optCounter].selected) {
                            document.forms[0].hidDefaultNames.value = document.forms[0].hidDefaultNames.value + selectTags[index].id + "~";
                            document.forms[0].hidDefaultValues.value = document.forms[0].hidDefaultValues.value + selectTags[index].options[optCounter].text + "~";
                            break;
                        }
                    }
                }
            }
        }
        return false;
    }