JavaScript - Check Box Validation

Hello all, new here Seems like a very nice place to be apart of.

I have my website www.gebcn.com. If you view source you will see all that I have done, but more importantly my problem. I have the JS code at the top there and I am unable to W3C validate my HTML because of the JS. I am using XHTML strict and would like to stay using it.

The JS I have at the top is my form validation code. I am able to do any validating that I need with this "snippet" of code, I have shrank it from my library version just to use for this newsletter. Until now W3C validating was not important now for some reason it is and I am faced with this problem.

I am not a Javascript guy more of a HTML/CSS guy and I can manipulate JS to suit my needs.

<problem>
I have tried to make this "snippet" of JS code an external file but receive multiple errors with the JS calling for the FORM NAME as it is not on the same page. The form NAME=NEWSLETTER is another problem, as W3C says I am unable to use attribute "NAME" in this location.
<problem>

I would like to keep the JS close to how it is now as I have a library to use this JS over and over again.

Any pointers in the right direction or solutions to my problem would be greatly appreciated.

Thanks! Hopefully it is not to hard huh

If there is anything anyone needs, the code pasted here, or anything else please let me know. Thanks again!

this code is supposed to
ask the users name
and say how many letters in it
get 2 random numbers
ask user to add them
if right say Well Done!
if wrong say
Sorry, you are wrong.

when i run this nothing comes up
whats wrong?

thanx



Code:

<script>
var firstName = "";
var numLetters = 0;
firstName = prompt("Hi, what's your first name?", "");
numLetters = firstName.length;
alert ("Did you know there are " + numLetters + " letters in your name?");
var num1 = Math.floor(Math.random()*9) + 1;
var num2 = Math.floor(Math.random()*9) + 1;
var answer;
var useranswer;
answer = num1+num2;
useranswer = promt("What is" + num1 + "+" + num2 + "?");
If (answer = useranswer)
{
     alert("Well done!");
}
else
{
     alert("Sorry, you are wrong.");
}
</script>

I have a text input box that resets to blank when the user enters an alpha character, it also checks for the number 0 as it has to be greater than 0 too... when I submit the form it is blank the variable changes to blank (as I use parseInt to convert it to an integer at a later stage)

What can I do to check and see if it is NaN value?
(I've tried isNaN() and it did not do what I wanted it to)

I am trying to add values from 6 text boxes and display its sum automatically in 7th text box. This is not working. Please help.





function calculate_a() {
var a = document.getElementById('Para_A_A1_score').value ;
var b = document.getElementById('Para_A_A2_score').value ;
var c = document.getElementById('Para_A_A3_score').value ;
var d = document.getElementById('Para_A_A4_score').value ;
var e = document.getElementById('Para_A_A5_score').value ;
var f = document.getElementById('Para_A_A6_score').value ;
var g = (a+b+c+d+e+f) ;
document.audit_billing_IE.product_name4.value = g ;
}



Quote:
Below is the html form code that should automatically display the total value without clicking on any submit or send button

<tr>
<td> Parameter A </td>
<td colspan='3'> <input type="text" name="product_name4" id="product_name4" onchange="calculate_a(this);" /> </td>
</tr>

I was wondering if there was a simple way of notifying a user who has entered an incorrect postcode? I have found numerous answers to this problem but i am sure there is a simpler way to do it as ones i have found have rows and rows of code.

Help is much appreciated

I got a page that gets created dynamically. sometimes I get images output with NO source like this


Code:

<img src="" id="md_1">
<img src="" id="md_2">

etc. etc.

the image id are created dynamically also and always start with "0" and count up in order.

I need to check everyone of those image links and when they are blank like above change the src to a default image. I have spent 8 hours on this one simple function and cannot seem to get it to work.


I will call the function at the end of the page.

Hi,

I'm trying to create a test using Javascript. Actually, I did this in PHP, but we need to put it a server that does nor run it, I think I can convert it to Javascript. I hope it'll be work as in PHP somehow.

Test will be composed of 15 questions and each question has either "Yes" or "No" as answer. And, I use radio buttons here for answers. By the way, there will be more than one radio groups.

Now, I want to check the value of clicked radio button in each group and use an if-statement to determine if it's correct. And, if it's correct, I want to increment a variable by 1.

Finally, by the resulted variable incremented for each question in the test, I want to use another if-statement to show specific result message for and interval of that variable.

I tried this for one radio button like this:

Code:

<script language="JavaScript">
 
function get(form) {
			
var ans1 = document.form.q1;
var score = 0;

for( i = 0; i < ans1.length; i++ )
	{
		if( ans1[i].checked && ans1[i].value == no ) 
		{ 
			score++;
			alert(score);
		}
		
		else
		{alert(score);}
		
	break;
	}
}
 
</script>

<form name="form" method="get">

<input type="radio" name="q1" value="yes">Yes
<input type="radio" name="q1" value="no">No*

<input type="button" name="button" value="button" onclick="get(this.form)" />
</form>

By the code above, it should alert 1 if "No" is checked and button is clicked and alert 0 if "Yes". This was a preliminary job for me to understand. And I couldn't do even this.

Thank you.

hi,

Getting on quite well, I feel. just would like you to confirm that this regex will strip out characters that cannot be in a phone number

those are (imv) 0-9 - ( ) +

Code:

val = val.replace (/[^0-9\\s\\-\\(\\)\\+]/gi,"");  // strip the characters that cannot appear in a phone number

I use double backslashes to keep the perl interpreter happy.

otherwise (in case it simplifies it for you), it would be

Code:

val = val.replace (/[^0-9\s\-\(\)\+]/gi,"");  // strip the characters that cannot appear in a phone number

bazz

This is perhaps a somewhat trivial point but it's bugged me a couple of times recently and I wondered if anyone out there had any thoughts on the matter.

Essentially I have an action that can happen many times but I want to record whether it has happened at least once. I know we are talking about a trivial amount of processing and code here but is there any real difference between the following two methods:

Code:

myCheck: false,

myRepeatedlyCalledFunction: function() {
     this.myCheck = true;

     // do some stuff
}

vs

Code:

myCheck: false,

myRepeatedlyCalledFunction: function() {
     if(this.myCheck === false) {
          this.myCheck = true;
     }

     // do some stuff
}

thoughts?

Hello, I have never used javascript before, so this might be a very basic question. I have a script on my blog which places a stumbleupon button on the page.

This is the code that calls the script:

Code:

<script src="http://www.stumbleupon.com/hostedbadge.php?s=5"></script>

Today I went to my blog and it was taking a long time to load, it turns out because stumbleupons site is down so the script can't be accessed. A whole lot of other stuff on the page just doesn't load until it times out though, so it takes like 3 minutes for the page to load.

What I want to know is can I test if the script is reachable and only call it if it is, so that if there is a 403 or 404 error it just won't even try to load it and continue loading the rest of the page??

Any help is greatly apprectiated!

Thanks.

from a browser address bar command? say if a page has hundreds of checkboxes, and I needed to check them all, but only 2-3 should be left out, how do i input a browser command line, to check it all, so i will manually uncheck the 2 or 3 thats not needed?

Is it possible to find out if an element is using a scroll bar for overflow?

like I need to be able to change the size of something if there is any overflow....

I need to create some javascript code that asks a user a series of yes/no questions. Depending on how the user answers it will direct them to additional yes/no questions or simply stop with a message that they are not eligible.

I need something similar to this site: http://www.kingfoundation.com/Grants...lity-Quiz.aspx

Any help to develop this code would be much appreciated as I am a fairly inexperienced developer.

Dear all,

The code below puts a link in mydiv when the page loads if myvar equals 1.

Great till here, but if myvar changes its value and it does not equal 1 any more I have to reload the page in order not to see the link.

What do I have to do to avoid that reload? what do I have to do to check myvar's value for changes constantly?

Thanks in advance!

Code:

<script type="text/javascript" src="http://code.jquery.com/jquery-latest.pack.js"></script> 
  <script>
  
  var myvar=1;
  
    function func1() {
        if (myvar==1){ 
       var putit=""; 
       putit +="<a href='#'>Put this link</a>";
       $("#mydiv").html(putit);
        }
}
    
  function addLoadEvent(func) {
  $(window).load(func);
} 
 
addLoadEvent(func1);
  
  </script>
  </head>
  <body>
<div id="mydiv"></div>

Hi I am completely new to javascript, in fact just started loooking at it on w3 this week, anyhow thought I would do my first script. The script creates three random numbers between 1 and 10 but makes sure that they are completely different.

It works, which is great as I have set out to achieve what was desired, however could somebody have a look and tell me if I have gone about it the right way.

Code:

<script type="text/javascript">

var one = (Math.floor(Math.random()*10+1));
document.write("1. " + one + "<br />");

do 
 {
var two = (Math.floor(Math.random()*10+1));
 }
while (two == one)
 
document.write("2. " + two + "<br />");

do 
 {
var three = (Math.floor(Math.random()*10+1));
 }
while (three == two || three == one)

document.write("3. " + three + "<br />" + "<br />");

</script>

Thanks in advance.
Joel