Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Getting the value of a label using JavaScript

Posted on 2014-11-17
3
Medium Priority
?
534 Views
Last Modified: 2014-11-24
I have a label on my page called lblActualProductionQuantity

Inside a repeater, I have 2 textboxes called tbTotalQuantity and tbQuantityPerDisplay.
(I also have a text box inside this repeater called testQty, which ultimately will not be used)

What I'm trying to do is as the user is typing, I want to make tbTotalQuantity (inside repeater) = tbQuantityPerDisplay (inside repeater) times lblActualProductionQuantity (Outside repeater)

When I run this code, it works fine. All of the controls however are inside the repeater

<script type="text/javascript">
    function closest(elm, className) {
        do {
            elm = elm.parentNode;
            if (elm.className !== undefined && elm.className.indexOf(className) > -1) {
                return elm;
            }
        } while (elm.className !== undefined);
        return null;
    }
    window.populate_num = function populate_num(elm) {
        var dm = closest(elm.parentElement, 'entry');
         dm.getElementsByClassName("tbTotalQunatity")[0].value = dm.getElementsByClassName("tbQtyPerDisplay")[0].value * dm.getElementsByClassName("testQty")[0].value;
    }
</script>

Open in new window


I want to replace testQty with lblActualProductionQuantity in my code. Here is what I've tried:

<script type="text/javascript">
    function closest(elm, className) {
        do {
            elm = elm.parentNode;
            if (elm.className !== undefined && elm.className.indexOf(className) > -1) {
                return elm;
            }
        } while (elm.className !== undefined);
        return null;
    }
    window.populate_num = function populate_num(elm) {
        var dm = closest(elm.parentElement, 'entry');
        dm.getElementsByClassName("tbTotalQunatity")[0].value = dm.getElementsByClassName("tbQtyPerDisplay")[0].value * document.getElementById("lblActualProductionQuantity").value;
    }
</script>

Open in new window


That doesn't work, but I figured the logic would make more sense if I posted it. So how do I get the value of the label lblActualProductionQuantity which is outside of the repeater?


TIA
0
Comment
Question by:Mike Miller
  • 2
3 Comments
 
LVL 14

Expert Comment

by:quizwedge
ID: 40448200
Since the label is inside of a repeater, there would be multiple elements with the ID of lblActualProductionQuantity. This shouldn't happen, so ASP.NET renames the IDs for you.

You could continue to use class names or in your javascript you can use the asp.net control name to get the client ID.

Code example (not mine) can be found at http://www.codeproject.com/Tips/578580/How-to-Get-User-Controls-ClientID-in-JavaScript-in

VB code:
Public Function getClientID() As String
        Return Controls.ClientID
End Function

Open in new window


Javascript example:
function FunctionName {
    alert(document.getElementById('<%=Uctest.getClientID()%>').value);
}

Open in new window

0
 

Accepted Solution

by:
Mike Miller earned 0 total points
ID: 40453064
Got it. Labels do not have values.
Number(lblActualProductionQuantity.innerText) worked
0
 

Author Closing Comment

by:Mike Miller
ID: 40461735
I was not provided with a working solution and was able to figure it out.
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When it comes to write a Context Sensitive Help (an online help that is obtained from a specific point in state of software to provide help with that state) ,  first we need to make the file that contains all topics, which are given exclusive IDs. …
Originally, this post was published on Monitis Blog, you can check it here . Websites are getting bigger and more complicated by the day. Video, images and custom fonts are all great for showcasing your product or service. But the price to pay in…
In this tutorial viewers will learn how add a scalable full-width header using CSS3. Create a new HTML document with an internal stylesheet. Set a tiled background.:  Create a new div and name it Header. Position it with position:absolute at the top…
In this tutorial viewers will learn how to embed videos in a webpage using HTML5. Ensure your DOCTYPE declaration is set to HTML5: "<!DOCTYPE html>": Use the <video> tag to insert a video. Define the src as the URL of your video; this is similar to …
Suggested Courses

564 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question