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Show a message in a label and...

Posted on 2014-07-30
Medium Priority
Last Modified: 2014-08-03
The task described below may take me days but for you it possibly takes only a few minutes. This is why I am coming to you.

There is a label on a webpage id="lblMessage"; upon click on two controls, the following function puts a message in it,

function showMsg(msgNo)
var msg1 = 'this is message 1';
var msg2 = 'this is message 2';

if msgNo==1
<add to lblMessage msg1 ;>
<add to lblMessage msg2 ;>

<the label to show the msg in a bright colored font and gradually die-out using opacity or something else>
Please make the font color and  duration editable.

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I am working in asp.net c#

Thank you.
Question by:Mike Eghtebas
LVL 35

Accepted Solution

Robert Schutt earned 1400 total points
ID: 40231261
I guessed you specifically don't want jQuery otherwise you might have mentioned it. It could be done more easily using that...

I've adjusted some existing code (kind of a fader plugin) to match your request, just left out the <%@ Page ... %> tag at the top because it won't match your project. If you have similar controls, you will only need the javascript anyway.

If you have a globally included javascript file in your project (or a master page), you could include the fader and the setXxx functions in there to avoid repetition if you need this on more than 1 page.

I have also put a static example online: http://schutt.nl/ee/Q_28487504 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title> EE Q_28487504 </title>
    <script type="text/javascript">

        var fader = function (opts) {
            var that = this;
            this.active = false;
            if (opts.elementName != null && opts.elementName != '') {
                this.startFade = function () {
                    setOpacity(that.element, that.perc);
                    if (that.perc > 0) {
                        setTimeout(that.startFade, that.duration / 100);
                    } else {
                        that.active = false;
                this.element = document.getElementById(opts.elementName);
                if (this.element != null) {
                    this.initialDelay = opts.initialDelay || 5000;
                    this.duration = opts.duration || 5000;
                    this.duration = Math.ceil(this.duration / 100) * 100; // round up to multiple of 100
                    this.fontColor = opts.fontColor || 'yellow';
                    this.text = opts.text || '<em>Hello</em> <strong>world!</strong>';
                    this.perc = 100;
                    this.active = true;
                    setText(this.element, this.text, this.fontColor);
                    setOpacity(this.element, 100);
                    setTimeout(this.startFade, this.initialDelay);

        function setOpacity(elem, opacityPercentage) {
            elem.style.opacity = opacityPercentage / 100; // for most browsers  
            elem.style.filter = 'alpha(opacity=' + opacityPercentage + ')'; // for IE (older only?)

        function setText(elem, text, colr) {
            elem.style.color = colr;
            elem.innerHTML = text;
            // if you don't want HTML, mind the textContent / innerText issue!

        var myFader = null, myFader2 = null;
        function showMsg(msgNo)
            var msg1 = 'this is message 1';
            var msg2 = 'this is message 2';

            if (myFader && myFader.active) {
                //alert('fader 1 is still active');
            } else {
                myFader = new fader({ initialDelay: 1000, duration: 1000, fontColor: 'red', elementName: 'lblMessage', text: msgNo == 1 ? msg1 : msg2 });
            if (myFader2 && myFader2.active) {
                //alert('fader 2 is still active');
            } else {
                myFader2 = new fader({ elementName: 'lblMessage2' });

    <form id="form1" runat="server">
    Test test test
    <hr />
    label: <asp:Label ID="lblMessage" runat="server" Text="xxxxxxxxxxxxxxxxxxx"></asp:Label>
    <br />label2: <asp:Label ID="lblMessage2" runat="server" Text="xxxxxxxxxxxxxxxxxxx" BackColor="Gray" ForeColor="white"></asp:Label>
    <hr />
        <asp:Button ID="Button1" runat="server" Text="Fader 1" OnClientClick="showMsg(1); return false;" />
        <asp:Button ID="Button2" runat="server" Text="Fader 2" OnClientClick="showMsg(2); return false;" />

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LVL 111

Assisted Solution

by:Ray Paseur
Ray Paseur earned 600 total points
ID: 40231383
Here's a general-purpose jQuery version showing how the HTML div id attribute names are connected to the style sheet elements and the jQuery selectors.

<!DOCTYPE html>

<!-- http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/Q_28487504.html -->

<html dir="ltr" lang="en-US">
<meta charset="utf-8" />
<meta name="robots" content="noindex, nofollow" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">

<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
    $("#signal").click( function(){

<style type="text/css">




<title>HTML5 Page with jQuery Message Visibility</title>

<div id="signal">Click Me!</div>
<div id="finalDiv1">First Message Area</div>
<div id="finalDiv2">Second Message Area</div>


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LVL 34

Author Closing Comment

by:Mike Eghtebas
ID: 40238290
Thank you very much.

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