JavaScript - Text Book Function Not Working

Hello, I am new to this forum stuff so please bear with me.
This is the code I am using.
Code:

<script type="text/javascript">
	function ReadForm(obj1) {
        "use strict";
		var amt = obj1.amount.value;
		obj1.amount.value = amt - (amt / 6.6);
	}
</script>

The value (obj1) is 99
It is supposed to return a value of 84 and I keep getting 99
DId I do something wrong ?

I am having trouble getting my function to work

here is what I have so far

Code:

<script type="text/javascript"> // script element to add the votes.js

function totalVotes(votes1){ // script element that will calculate the array
 ****var total = 0;
 ****for (var i = 0; i < votes1.length; i++) {
 *******total = total + votes1[i];
 ****}
 ****return total;
}
</script>

Can anyone see whats wrong?
when i run it i still get nothing

Hello,

I was just wondering if anyone knows of a great javascript book to buy. I am looking for something super duper hard core. I would love it to have documentation galore that includes all of the AJAX and DOM and XML. You know... like a javascript BIBLE. Something thick and comforting. Something that makes you feel all warm and toasty inside just knowing that it is there. So if I start running into some problem I can just glance at the book and rest assured that if the problem exculates not to fear. I have .... THE BOOK.

Does anyone have any suggestions?

Thanks,

Michael

Would like to start learning JavaScript and would appreciate any books based on JavaScript that forum members would care to recommend. Thanks all

So I am looking for a book that basically goes from the very basics to middle level of java programing, but one that is up to date, and that explains everything, not like some of the books that just throws code at you and expects you to understand why you are making the class public and why it extends javaplugins, just something in depth that really explains why for everything.

Hi, I have a very old book on JavaScript, and just wondering if it would be wise to start from it. The book is:

SAMS Teach yourself JavaScript in 24 hours - Second Edition (covers JavaScript 1.5)

Let me know guys because I can get cracking on with it if so!

What I need to know is whether or not JS has been updated since?

hello, i have a form validator that works fine in chrome, safari, firefox...but not IE 8.. i'm pretty new at javascript... any help is appreciated

Code:

  function detect()
        {
            if(navigator.cookieEnabled == false)
            {
                alert('You must enable cookies in your browser!');
               	return false;
               	
            }
                     
                      
           if(document.add.color.value == "-Select Color-")
            {
            	alert('Please select a color!');
            	return false;
           
            }       
            
            if(IsNumeric(document.add.quantity.value) != true)
            {
            	alert('This must be a number!');
            	return false;
            }
            
            
            if(document.add.quantity.value == 0)
            {
            	alert('You must add at least one item!');
            	return false;
            }
            
            
                        
		}

and the html

Code:

<form name='add' onSubmit='return detect();' method='POST' action='process.php'>

I'm presently trying to work through a tutorial at http://www.devarticles.com/c/a/JavaS...ld-Examples/3/

The code, as written in the tutorial fails when it comes to:

Code:

		        obj.onchange = function()
		        {
		        	this.hideError(obj);
		        };

Using Firefox's Web Developer Toolbar, I learned that (allegedly) "this.hideError(obj) isn't a function."

Event though it is clearly presented in the code as a function:

Code:

	// define 'hideError()' method
	    this.hideError = function(obj)
	    {
	        obj.parentNode.removeChild(obj.errorNode);
	        obj.errorNode	=null;
	        obj.onchange	=null;
	        this.valid	=true;
	    };

If I replace the obj.onchange with the contents of the function:

Code:

		        obj.onchange = function()
		        {
		        	//this.hideError(obj);
			        obj.parentNode.removeChild(obj.errorNode);
			        obj.errorNode	=null;
			        obj.onchange	=null;
			        this.valid		=true;
		        };

this now works... almost: it works when I hit the submit button.

This begs two questions:

1. What is wrong with the this.hideError(obj); function that none of my browsers (e.g. IE, FireFox, Chrome) recognize it as such?

2. Why are these browsers waiting for me to hit submit again, rather than changing as I change the contents of the input element? How could I fix this?

I've been stuck on a piece of code for awhile. I have two items but they won't run at the same time only one will work:
Code:

function loadProductK ( prSrc, imgSrc, prDesc, pr$, prStock, prAnchor, rank ) 
	{
var  product ='<div class="productDiv" id="'+prAnchor+'"><img src="'+imgSrc+'" width="150" height="150" title="'+prDesc+'"/><div class="productname">'+prDesc+'</div><div class="product$">&euro;'+pr$+'</div><div class="productstock">'+prStock+'<div class="productvisit"><li onclick="loadPage("'+prSrc+'")">Check product >></li></div></div>'

var productpage = document.getElementById("imgLoad")
productpage.innerHTML=product

loadProductK ('page/p/bead1.html','page/i/bead1.jpg','Round Bead','1,22','In Stock','Bead1','1' )
loadProductK ('page/p/Bead2.html','page/i/Bead2.jpg','Three Round Beads','6,99','In stock','Bead2','2' )
	}

Now i need the function loadProductK to work for both of the loadProductK's as seen below.
Really need some help on this one.

I've been working on RSA encryption using javascript and php for quite some time but i'm not able to do it properly. i'm using the standard RSA.js,BigInt.js and Barrett.js javascript files for the javascript part but the thing that i have noticed is the public exponent is always 10001 or 3 . only then the function works. but the problem is the php file generates a comparatively larger public key exponent. if i use that in the javascript function it crashes. is there anyway out of this ?

I am creating a weather widget for the iphone. The program creates an xml request for a weather feed and then parses the response. Depending on the response different information is displayed. A different icon for each weather pattern. I have all of this working so far. What I want to integrate is the option to refresh the weather when a user taps on the icon.

Here is my code:


Code:

document.getElementByID("weatherIcon").innerHTML="<img src=\"Icon Sets/"+iconSet+"/"+MiniIcons[obj.icon]+iconExt/" border=2 onclick=\"refresh();\">"

Code:

function refresh()
{
weatherRefresherTemp();
}

I know that the function refresh works because it is called from another function that allows the refresh to happen automatically every 30 min. However, wanting to integrate an option to manually refresh I am trying to do it this way. The code never seems to fire, nothing happens. I've added the border option for testing and don't even see that. I've been using a javascript editor and I do not get any errors. Any suggestions would be greatly apprectiated.

I am trying to pass a value to another function, seems to work with the other function i have but not this one?

any reasons why this wont work?


Code:

/* ---------------------------- */
/* XMLHTTPRequest Enable 		*/
/* ---------------------------- */
function createObject() {
	var request_type;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
	request_type = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		request_type = new XMLHttpRequest();
	}
		return request_type;
}

var http = createObject();

/* -------------------------- */
/* SEARCH					 */
/* -------------------------- */
function autosuggest(q,f,r) {
alert(q+' '+f+' '+r);
// q = document.getElementById(var f).value; //
// Set te random number to add to URL request
nocache = Math.random();
http.open('get', 'ajax_search_for_airport.php?q='+q+'&f'+f+'&r'+r+'&nocache = '+nocache);





http.onreadystatechange = autosuggestReply(r);

/* this line is not working as expected, it kicks up an error 
Message: Type mismatch
Line: 26
Char: 1
Code: 0


i am wanting to pas the value of  r  to the other function.
*/


http.send(null);
}
function autosuggestReply(r) {
if(http.readyState == 4){
	var response = http.responseText;
	e = document.getElementById(r);
	if(response!=""){
		e.innerHTML=response;
		e.style.display="block";
	} else {
		e.style.display="none";
	}
}
}

function fill(r,fieldid,resultsid) {
e = document.getElementById(fieldid);
e.value=r;
document.getElementById(resultsid).style.display="none";
}

Hi
This is for a class project, for some reason only the first part is working. The (sales*.20) and all of my else if are not. Kind of stuck on this.

Code:

<script type="text/javascript">
	function bonus()
	{
	var sales 
	var excellent 
	var good 
	var fair
	var poor
	
	sales= document.workBonus.txtSales.value;
	sales= parseInt(sales);
	excellent= document.workBonus.chkExc.value;
	good= document.workBonus.chkGood.value;
	fair= document.workBonus.chkFair.value;
	poor= document.workBonus.chkPoor.vaule;
	
	
		if (sales && excellent)
		{
		alert(sales * .20)
		}
		else if (sales && good)
		{
		alert(sales * .10)
		}
		else if (sales && fair)
		{
		alert(sales * .05)
		}
		else if (sales && poor)
		{
		alert(sales * .01)
		}
	
	}

</script>

I'm having a small issue with being able to use the onclick more than once. When I load the page and click the link the request works fine the first time. But if I cancel the request then goto click the link again, nothing happens.


Code:

<a href="javascript:void();" onclick="sendRequest()">Send the request</a>

<script>
var request = {
    method: 'postrequest',
    message: 'You will like it',
    data: '123key'
};
function sendRequest() {
    postReq(request, function (a) {
        if (a && a.post_id) {
             
//Do something if sent
            
        } else {

//Do something if cancelled
       
        }
    })
}
</script>