Retrieving Form Values In Javascript

Sep 29, 2006

I am trying to create a form for authorised users to upload photos to
an image gallery. I'm attempting to perform simple validation of the
fields by ensuring the fields aren't empty and that the extensions are
right. However, I can't seem to access the actual values of the fields
to start with.

If I simplify my problem, can anyone tell me why this would work in a
Javascript alert:

alert(document.form.Photo1.value);
//This outputs 'D:/images/x.jpg'

but this won't:

var photonumber = "Photo" + 1;
alert(document.form.photonumber.value);
// I get "undefined"

The reason I'm doing this is because I'm looping through a finite set
of images and need to check each one is valid.

Is it because I'm not initialising the "photonumber" string correctly?

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CPU 100% On A Loop While Retrieving Form Values

Jul 20, 2005

I have a form with a lot's of number of Text and Hidden Fields. I just do a simple loop to get each value for each attribute. I have about more than 2000.

if i do something simple like :

for (var i=0; i<2000; i++)
aValue = i+10;

it runs well. But if i do something like
for (var i=0; i<2000; i++)
aValue = document.myForm.elements[i].value;

it gives me 100% CPU for a long time before i submit the form.

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Aug 18, 2010

So I'm a novice coder and have been trying to piece together a (seemingly) simple function. I want the user to be able to enter in a certain amount of time into a form, and then when they click submit, it opens a new page and closes after that amount of time.There is a very simple form on the first page that accepts input and looks like so:

<form action="onbreak.php" target="_blank" method="POST"><p class="fillable">I would like to view <input type="text" name="url" id="url" value="" size="30"/> for <input type="text" name="timeinput" id="timeinput" value="" size="3"/> minute(s). <input type="submit" value="Break Me!"/></p></form>

[code]....

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Nov 28, 2010

HTML Code:
function makeForm(name) {
mypara=document.getElementById("paraID");
myform=document.createElement("form");
myselect = document.createElement("input");

[Code].....

I am creating a form dynamically using javascript.The form is created successfully. After creating the form before submitting the form i would like to make some check points before submission.so while creating the form i am adding the event on submit=call function for validation .THe function is called successfully but i am unable to retreive the form values in the validation script

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Sep 13, 2010

i need some help with an assignment. the program needs to display a list of flights from options selected from drop down menus. i have written the code to display all flights, now i need to write the code to include the options such as destination and airline. here is the whole of the code.

<HTML>
<HEAD>
<TITLE>Stanwick Imaginary Airport - flight information</TITLE>

[code]....

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Mar 30, 2011

I'm trying to figure out what I'm doing wrong here. I have a select control and I'm trying to determine what index or value was selected and I can't seem to get it to work right. I'm sure it's something simple but I'm new at this.

Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

[code]....

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Dec 2, 2010

I am trying to create a script to randomly assign recipients to givers for a Secret Santa.he participants are placed into groups. A giver cannot be assigned a recipient with whom he is grouped. I want to return all of the assignments in a table. I have made the following script. When I run it, it seems to get stuck in a loop. Any ideas why this might be? If you have any questions about how I want this thing to run, feel free to ask.

<html>
<head>
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[code]....

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Nov 24, 2009

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Sep 13, 2007

I have been trying to use

<script language="javascript" type="text/javascript">
function check_length()
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var x = document.getElementById("tbDescription").value;
alert(x);

[Code].....

but get an object required error in IE and ocument.getElementById("tbDescription") has no properties in FireFox. I have tried using the single, double quotes, and nothing around the tbDescription in the javascript function, but none of the 3 helps.

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I am using the SVG plugin. I have a simple test and I am unable to retrieve the x and y values of a text object.
$('#objID1', svg.root()).attr('x')

This returns as empty. Where as:
$('#objID1', svg.root()).attr('fill')
successfully returns the fill value.

HTML code:
<html xmlns="[URL]">
<head><title>SVG test</title>
<script type="text/javascript" src="js/jquery-1.4.4.min.js"></script>
<script type="text/javascript" src="js/jquery-ui-1.8.7.custom.min.js"></script>
<script type="text/javascript" src="js/jquery.svg.js"></script>
<script type="text/javascript" src="js/jquery.svgdom.js"></script>
<script type="text/javascript" src="js/jquery.svganim.js"></script>
<script type="text/javascript" src="js/test2.js"></script>
<style>
#svgCanvas {
width: 200px;
height: 200px;
border: 1px solid #ff0000;
}
#svgAtts {
width: 200px;
height: 200px;
border: 1px solid #ff0000;
}
</style></head><body>
<div id="svgCanvas"></div>
<div id="svgAtts"></div>
</body>
</html>

Javascript code test2.js:
$(function() {
$('#svgCanvas').svg({onLoad: function(svg) {
//code
}}); });
$(function() {
var svg = $('#svgCanvas').svg('get');
var obj = svg.text(50,50,'Some Text',{id: "objID1", fill: "#FF0000", fontFamily: "Arial", fontSize: "24"});});
$(function() {
var svg = $('#svgCanvas').svg('get');
var string = 'fill = ' + $('#objID1', svg.root()).attr('fill') + '<br />';
var string = string + 'font family = ' + $('#objID1', svg.root()).attr('font-family') + '<br />';
var string = string + 'font size = ' + $('#objID1', svg.root()).attr('font-size') + '<br />';
var string = string + 'x = ' + $('#objID1', svg.root()).attr('x') + '<br />';
var string = string + 'y = ' + $('#objID1', svg.root()).attr('y');
$('#svgAtts').html(string);
});

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<!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">

[code]....

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The only way I know to do the popup window is with javascript (unless php can do it). I know how to access form elements with javascript if the form element exists, but given most of the elements may change, I do not know how to access them.

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Jul 23, 2005

I have:

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<form action="actionURL" method=post>
<input type=hidden name=catalog value=store>
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<form name="FormXX" method="post" action="default.htm">
<input id="idBoxOne" name="bxOne" type="text">
<input id="idBoxTwo" name="bxTwo" type="text">
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Up to this point I've only used JavaScript to change CSS properties,
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Here's the code - is there a function I'm using that could be replaced with something more friendly to Firefox?:

<script type='text/javascript'>
var i = 1;
function addArea() {
var newArea = addElement();

[Code].....

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Code:

Once the form is filled out and saved, the data is inserted into the database and the values from these 4 text boxes are concatenated, comma seperated and inserted into that one field correctly.

(Example)

If the 4 text boxes have the following values:

In the database field they become:

However, if the form is closed and then re-opened, each text box displays the entire database field rather then each value seperated in the corresponding text box.

(Example)

All 4 text boxes display this:

I already know why the data appears like this in the form, my problem is that I'm not sure how to write the javascript to seperate the values into the correct corresponding fields, assuming javascript is what I should be using!

Also, this is kind of irrelevant but just in case you're wondering, this form is part of a cold fusion application!

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I have 4 text boxes that are supposed to load 4 seperate values of data from one field in one table from a database. The field is called interface_cropsettings (from the interface table) and these values have been concatenated and comma seperated in this field.

Code:

Once the form is filled out and saved, the data is inserted into the database and the values from these 4 text boxes are concatenated, comma seperated and inserted into that one field correctly.

(Example)

If the 4 text boxes have the following values:

In the database field they become:

However, if the form is closed and then re-opened, each text box displays the entire database field rather then each value seperated in the corresponding text box.

(Example)

All 4 text boxes display this:

I already know why the data appears like this in the form, my problem is that I'm not sure how to write the javascript to seperate the values into the correct corresponding fields, assuming javascript is what I should be using!

Also, this is kind of irrelevant but just in case you're wondering, this form is part of a cold fusion application!

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