[RESOLVED] Help with Javascript prompt in ASP.net VB page

I'm inexperienced enough with Javascript that I couldn't tell if any of the other posts addressed my issue or not. Sorry if this is a repeat and feel free to point me to the post, if there is one.

I have an ASP.net VB page with a checkbox for reject and a textbox for Quantity Rejected. I'm trying to get a javascript prompt, asking for the reject qty, to open when the checkbox is checked. The user will enter a quantity in the prompt and the quantity rejected will fill with that quantity. Once the text in the quantity rejected textbox changes that will trigger some other stuff from the codebehind. If it makes a difference my checkboxes and textboxes are asp controls rather than html input controls.

I originally had the script working, sort of, from the script on the markup page with the script below. I say sort of because it was firing whether the checkbox was checked or unchecked.

Code:

---

    var qrcheck = document.getElementById('bolRej1');
    if (qrcheck.checked) {
        function rQty() {
            var rq = prompt('Enter Reject Qty', '');
            document.getElementById('txtQtyRej').value = rq;
        }
    }

---

I've now moved the script to the checkbox's OnCheckedChanged event in the codebehind.

Code:

---

    Protected Sub bolRej1_CheckedChanged(sender As Object, e As EventArgs) Handles bolRej1.CheckedChanged

        If bolRej1.Checked = True Then

            Dim sb As New System.Text.StringBuilder()
            sb.Append("<script Type ='javascript'>")
            sb.Append("function rQty() {")
            sb.Append("var rq = prompt('Enter Reject Qty', '');")
            sb.Append("document.getElementById('txtQtyRej').value = rq;")
            sb.Append("}</script>")

            ScriptManager.RegisterStartupScript(Page, Page.GetType(), "rQtyFunction", sb.ToString(), True)

        End If
    End Sub

---

With the codebehind method the prompt never opens. I can include a break point and see that it is running through the stringbuilder and apparently running the script but the prompt isn't opening and I just see //]]> at the bottom of my page and see the code below in view source.

Code:

---

<script type="text/javascript">
//<![CDATA[
<script Type ='javascript'>function rQty() {var rq = prompt('Enter Reject Qty', '');document.getElementById('txtQtyRej').value = rq;}}</script>//]]>
</script>

---

I'm not sure what I'm missing. Am I completely off track. Any and all help would be greatly appreciated!

Anybody???

When doing a Prompt in JavaScript you still need to use an Alert to actually show your message.

Something like this -

function rQty() {
var rq = prompt('Enter Reject Qty', '');
alert(rq+'!');
document.getElementById('txtQtyRej').value = rq;
}

the code you're building in the string builder should be just the js code... you shouildn't be adding the script tags, that appears to be generated by the RegisterStartupScript ... also, registering it only injects it into the page... it still needs to run somehow. I'd keep it where it was in the page on the onClick event. If it's firing off even when it's unchecked, then you should be looking at why ...

why are you defining a function inside the if? just have the code... no need to define a function there, especially since that puts you in the same boat as the register script method, it never gets called.

Following what I'm reading here - http://stackoverflow.com/questions/9...ked-javascript

it should be like this:

Code:

---

    var qrcheck = document.getElementById('bolRej1');
    if (qrcheck.checked) {
            var rq = prompt('Enter Reject Qty', '');
            document.getElementById('txtQtyRej').value = rq;
    }

---

-tg

So here's one remaining question...

I have two controls that will need to call that function. The first is the checkbox control noted above. I also have an MPN dropdownlist that has an item "Wrong Part R'cvd". If that item is selected I also need to check the bolRej1 and get the reject quantity. I'm already using the "SelectedIndexChanged" event to check the checkbox but since that just triggers the checkedChanged event and not the onclick event, I need to find a way to call the function from the checkedchange event or by the dropdownlist event. Any thoughts?