JavaScript返回值在onclientclick之后运行onclick

Question

I wanted to run my onclick event after the onclientclick but the program keep pop up and ask Please select at least one to delete no matter my checkbox is clicked or not.

I think maybe my return value is wrong? Thanks for help.

 <script type="text/javascript">
        function validate() {
            var gridView = document.getElementById("<%=grid1.ClientID %>");
            var checkBoxes = gridView.getElementsByTagName("input");
            for (var i = 0; i < checkBoxes.length; i++) {
                if (checkBoxes[i].checked) {
                    if (confirm("Are you sure to delete?")) {
                        alert("Ok");
                    }
                }
                else{
                    alert("Please select at least one to delete.");
                    return false;
                }
                return false;
            }
       }

    </script>

Answer 1

Leave the function after the confirm:

 <script type="text/javascript">
    function validate() {
        var gridView = document.getElementById("<%=grid1.ClientID %>");
        var checkBoxes = gridView.querySelectorAll("input[type='checkbox']");
        for (var i = 0; i < checkBoxes.length; i++) {
            if (checkBoxes[i].checked) {
                if (confirm("Are you sure to delete?")) {
                    alert("Ok");
                    return true;
                }

            }
        }
        alert("Please select at least one to delete.");
        return false;
   }

</script>