How do I determine whether a variable exists in a form. I have a form called "theForm". I want to determine whether the variable "THIRD_PARTY" exists in the form and if it has been set.
View 6 RepliesUsing Javascript, how do I determine if there is a DIV with a particular CSS class name on the page? (Not an ID...) I'm writing a function to perform an action if it finds that DIV on the page.
View 2 Replies View RelatedI'm new to javascript and PHP and I am wondering if there is a method or function to capture a 404 error in the event a particular html file cannot be found. I want to redirect that error to another page or design the code to send me an email telling me what page was selected and not found. In other languages I can trap such an error and respond to it.
View 3 Replies View RelatedI would like to check the querystring to see if a variable exists.If groupid exists in the querystring and has ANY value then show a hidden div (#closedMsg). I do not care what the value of the groupid is I just want to verify that it has a value.If the url looks like this "www.somesite.com?groupid=" with no value for groupid, I do not want to show the hidden div.
View 2 Replies View RelatedI am trying to pick the larger of 5 numbers and sometimes there is a tie. I would like to prioritize variable c1 if there is a tie.
View 5 Replies View RelatedI am working on a registration page.I did all the validation but facing problem during username validation.when a user enter email id in the textbox,it first check whether it is present in database or not.. if not present "register successfully" otherwise "email exists"
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I have a form, that depending on some conditions MAY have a certain drop down box in it.
I would like to have a javascript function that checks to see IF the drop down box exists? ie: Does the javascript object exist?
Sort of like this:
function resetMenu1(){
//Test to see if dropdown exists.
if exist(document.menu.file.value) {
document.menu.file.value = "Yes!";
} else {
alert("Box does not exist.")
}
}
Anyone know how to do this? It's the "if exist" part I don't know how to do.
Is there any way to find if any form exists on the page and if yes then name of all forms?
View 2 Replies View RelatedI want to validate a form. In the form is a text field named 'extra[]' where the user inputs a number. The number is what I want to validate.
However, the 'extra[]' field is dynamic and does not always appear in the form.
If it appears, there may be only 1 occurrence of it which means it's then not an array but there may also be multiple occurrences of it.
I have a script that validates (and work as it should) if the 'extra[]' field occurs multiple times and is thereby an array, but I can't figure out how to validate the 'extra[]' if there is only 1 and to not throw an error if it's not there at all. Code:
alright I'm writing form which calls out a function F1 onsubmit but I want it to do that based on what the user answers to the last question on the form
this question has a yes/no answer, if the answer is yes, I want it to call F1 as it would and the function basically sends the form contents to two different places, if the answer was no, I want it to just submit it to one place.. Code:
looking for the best current way to determine the coordinates of a form's text input that the user just clicked, so that I can use that info to dynamically position a select menu that I will make become visible just below that text input.I am finding all kinds of things.. but most are unclear to me, or worse.what they feel is the proper best current way to go about this
View 9 Replies View RelatedI created this test routine to return the form containing a certain
input element:
function GetElementForm(element)
{
// Return the form that contains element.
varmyElement = element;
while (myElement)
{
myElement = myElement.parentNode;
if (myElement)
{
var sTagName = myElement.tagName;
if (sTagName)
{
if (sTagName.toLowerCase() == "form")
{
break;
}}}}
return myElement;}
This seems to work for "well formed" HTML, but fails for example, when
a form is defined within a table.
Im trying to find the correct syntax to use to determine whether which form
element is visible on changing the value in a dropdown list
I need something in the onChange of the dropdown list that will cause the
appropriate element on another part of the page to be displayed Code:
var mydropdownlist =
document.questform.typeid.options[document.questform.typeid.selectedIndex].v
alue;
if(mydropdownlist<6)
then display <input name="ans1" type="text" >
else
display <textarea name="ans1" rows="1" ></textarea>
I have a javascript in the head of the document which has a variable named "ref2" ... ref2 is already working as I can see its value working in another function. I need to send this variable as the value of a hidden field in the form which is in the body of the document.
This is my JavaScript Code:
Code:
And at the end of my form, before the submit button, I have the following code:
Code:
When I execute the form, it doesn't work the way it should, plus, gives me a word "undefined" next to the "Submit" button .....
I have a javascript in the head of the document which has a variable named "ref2" ... ref2 is already working as I can see its value working in another function.I need to send this variable as the value of a hidden field in the form which is in the body of the document.This is my JavaScript Code:
function WriteContactFormStatement1 () {
var ContactFormValue = ref2;
document.write('<input type="hidden" name="UReferrersName" value="' + ContactFormValue + '"
[code]....
<INPUT id = "bot1" TYPE="button" name="text1" value="" size="40" onClick="location.href= valore12" >
the onclick is opening a file. How can I tell javascript a message has to be seen if if there is not that file in the specified directory...
I have a textbox for entering URL. I validate that URL using regular expression. Now the problem is, How do i know whether the entered URL is exist or not.?For example, if user enter "http://www.daniweb.cam" rather entering "http://www.daniweb.com", how do i intimate them that the entered url is not valid.?
View 1 Replies View RelatedUsing Javascript I need to figure out how to check if a URL actually exists. The problem is that the Javascript file may not always be there so I have I have to check every time I need it.
AJAX is not an option AND its has to cross browser compatible.
*NOTE The URL will always be pointing to a Javascript File
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I'm trying the figure out how to check if a id exists.
I have tried this;
if(document.getElementById("theID")
Then do this
But that doesn't seem to work.
All I want to do is if it doesn't exist then don't run the function.
I have 2 arrays:
var A1 = new Array();
A1[ 0 ] ="Y2";
var B1 = new Array();
B1[ 0 ] ="Y1";
B1[ 1 ] ="sink";
I also have a drop down menu with the names of the arrays. Say:
document.form.option[1].text returns 'B1'
Can I transform the string 'B1' into the array B1, so that:
document.form.option[1].text[1] returns 'sink'
Currently I'm doing this with conditionals, e.g.
if(document.form.option[1].text =="B1){do stuff}
but this gets a bit messy.
i have a simple thing that causes me all sorts of headaches. I have many forms on the same page, and identical items in each form. The same object in each form call the same procedure. So, I'm passing in the form value, such as:
onchange="DoMyFunction('formName');"
and then in the procedure i do:
function DoMyFunction(formname){
document.[formname].object.value='1';
}
Now i have functions like this all over, problem is getting them to work. Once they work, they work fine. But when i add a new one, it can match an old function (except the object being referenced) and it won't work!
Does anyone know the proper way to reference a form in a function?
I am trying to assign a variable using a form value, but it returns as undefined. However, if I directly set em (uncomment them), it works.
Why are my values not working?
<script type="text/javascript">
//lichbloom = 2;
//frostlotus = 5;
lichbloom = document.endlessragevalue.lichbloom.value;
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Is it possible to use variables as the name for a form element e.g.
<script type="text/Javascript">
<html>
<head>
<script type="text/Javascript">
var myvar = 1;
</script>
</head>
<body>
<input name="myvar" type="radio" value="radiobutton" />test
</body>
</html>
I tested the above and looked at the course. The name is shown as "myvar" and not "1", so I guess it didn't work.
I'm writing some javascript functions to process variables from a form. Running into a few hitches, wonder if anyone can clarify what I think must be pretty easy questions but my searches don't find any answers....
My html page is using the form variable values to do some calculations and display images in a new window.
One of the form objects is a <select> looking like this:
<form name="imgform">
<select name="imgct">
<option value=totalimgs selected>all
<option>3
<option>4
<option>5
.
.
.
</select>
and I want the selected option "all" to be loaded with the value of a predeefined variable "totalimgs". When I later access it using
var imgct=document.imgform.imgct.value;
The above obviously returns a string value of "totalimgs", not the value of the variable itself.
I have this form
<form action="" method="post">
Nick : <input name="nick" type="text" />
</form>
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This should be an easy one to figure out. Right now I have a function that looks like this:
HTML Code:
function myfunction() {
var field = document.myform.sd;
[code]....