How To Check If Variables Are Integer
Aug 16, 2011
I have the following Javascript code to make a simple calculation. It works fine the numbers entered are integer. But if the numbers are 1.5 style I get stupid results or NAN error. I would like to add a check to the script which checks:
1- If the value entered is integer or 1.5 style for all fields. If it is not gives an alert message and stop calculating.
2- If the visitor enters 1,5 instead of 1.5 (In Turkey it is a common usage.) I need script replace the 1,5 with 1.5 and then make the calculation
[Code] .....
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Jul 23, 2005
What is the best way to validate a field as a positive or negative
integer?
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May 12, 2010
I am pulling a value via JavaScript from a textbox.If the textbox is empty, it returns NaN.I want to return an empty string if it's null, empty,etc.What check do I do?if(NAN = tb.value) ?
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Jun 14, 2010
I have already done a number of things with Jörn's validation plugin and I'm excited about its features. But here is my question: how do I validate a field so that it fits the two following conditions: it should be an integer and should not be equal to zero? So, if a user enters "0", it should be error; if he/she enters "12.5", it should be error also; but "-3", "125", "40" are OK.
[Code]...
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Jul 20, 2005
First script, 'xxx.js' returns value 'document.write('integer');
So in HTML:
<script language='javascript' src='xxx.js'></script>
will write ie. 123 on my page in browser.
Can I get this integer or text 'document.write('integer')' to variable in
another script? So it would be something like this:
<script landuage='javascript>
a=<script ... src='xxx.js'></script>;
a*=20;
document.write(a);
</script> ...
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Sep 13, 2006
I am trying to learn how to do this one thing with JavaScript and can't seem to find anything on the internet. I have learned about loops and arrays and some other useful stuff. I've been looking for 2 days straight. I have gotten close though.
I am trying to have a textbox on the page and a button below it. A statement above the textbox should ask the user to enter a positive integer and then click the button. When the button is clicked the results from 0 to that number should appear below the button. Should look like this
please enter positive integer.
6
BUTTON1
1
2
3
4
5
6
I have been trying night and day for 2 days now and It's driving me insane.
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Oct 20, 2010
This is called upon submit, how check if textbox id-img1 name=img1 containts an integer?
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Sep 25, 2007
function calculateGst(exGst) {
//percentage of current gst.
var gst = 10;
var gstAmount = (exGst * (1 / gst));
var gstInc = (exGst + gstAmount)
alert(gstAmount);
alert(gstInc);
}
now, the exGst parameter comes from an document.getElemenetById('txtExGst').value in an onclick event.
the problem is this. if 400 is entered at exGst, the gstAmount spits out 40, as it should, but the gstInc spits out 40040...so its treating it like a string rather than a number...
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Jan 29, 2006
how can i convert an integer value into related character. is there any function for it?
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Jun 17, 2010
i need to do some arithmetic on the returned value from:
var left = $('.object').css('left');
it comes back as px value, but i need just the number.
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Sep 28, 2009
I'm little struggling with the following. How can you create the following integers?
1000000 -> 1.000.000
50000 -> 50.000
100 -> 100
Is there a native JS function to accomplish this?
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Feb 20, 2006
How can I verify a text input box has an integer value and that value is greater than 0?
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Sep 3, 2009
function load(cv)
{
setInterval("checknew('cv')",1000);
}
checknew sends the number 1 or 0 depending on what load sends, and in turn, its just alternating 1/0 every second.
I am unsure how to send the number I get in load(cv) to checknew(cv) every 1 second on setInterval.
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Jun 14, 2010
I have some one page whose div elements are aligned by JavaScript. The JavaScript just check a set of div elements to find the max offsetWidth, then set all div elements' width to be the max offsetWidth. It works perfect in most browsers and locales, but it fails on french-France in Firefox on Mac. In this case, the content of div wraps.
<div id="divFoo">
Heure de début :
</div>
for above HTML, below code report "79".
javascript:alert(document.getElementById('divFoo').offsetWidth);
but below code report "79.1333px".
javascript:alert(window.getComputedStyle(document.getElementById('divFoo'),null).width))
The gap between 79.1333 and 79 makes incorrect width set to inline style.I used to thought that offsetWidth and width should always be integer. Is there any way to make offsetWidth round correctly?
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Nov 30, 2010
I want javascript function that could convert from integer to float e.g if user enters 10 then it should convert it to 10.00 or better 10.000. If user enters 10.0123 then it should convert it to 10.0123.
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Jul 20, 2005
I want to turn the string "100,144" to numbers, to use for
resizeTo(100,144) <--- here.
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Jan 12, 2010
Is there a way to retrieve and store the value of obj.style.top as an integer instead of a string? Write now I'm limited to statements such as
if(obj.style.top=="98px")
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May 6, 2010
Does JavaScript have an easy of converting an ordinary integer like 135 into a time format like 02:15? I'm working on a timer that handles the backend with just a plain integer that counts down every second but it needs to output looking like a clock.
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Dec 1, 2011
I am creating a cookie that increases a "value" or "integer" by 1 (ie Y+1) every time any page inside my webpage. Any webpage that i put the code into. right now I need it so that when you visit a page with the code it increases the variable or "cookie" (Y) by 1. when Y reaches a certain number, I.E 10, it resets Y to "0" and redirects you to a URL. Please explain where each value would go in any replies. EX: when opening the menu of an iPod game it asks you to rate the game, saying remind me later resets the value to "0" and saying rate now, resets to "0" but does not keep counting on the next page.
[Code] .....
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Dec 8, 2011
I was wanting to write text to the screen but without re-writing the whole screen (e.g. document.write();. I wish to take text and put it in a function, modify it, then display it.So far I have:
<script type = "text/javascript">
function calculate(text){
var x = "10.0";[code].....
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Jan 8, 2007
I am creating a contact us form and i want at the completition of the form to add a unique number so the customer can contact us.
I am using java and i decide to use the Server Time. I want to record the day,month,year,hour,minute,msec into 1 number with Java.
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Oct 30, 2006
I need some ideas on how to compute the factorisation of a non-zero integer?
For example:
if the user input is 8, its factorisation is 1 * 2 * 2 * 2;
if the user input is -300, its factorisation is -1 * 2 * 2 * 3 * 5 * 5
Does anyone know?
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Mar 3, 2010
This should be simple, but it's not working for me! The relevant code is beneath. This code is on my html page directly under the input field:
input = document.getElementById('hiddenInput');
var inputInt = parseInt(input.value);
if (inputInt != 0) {
setClick(inputInt);
}
(I've tested it to make sure it sees the input object and that it has the correct value. It does call the setClick function appropriately, too.) This code is in a javascript file called in the <head> of the html page:
[Code]...
setClick() and resetAll() work great when I hook setClick() up to a link. When I try to grab the value from the input field, it doesn't even call resetAll(). I've assumed that it's a problem with converting the value to an integer, but I could be wrong. Does anyone have an idea as to what's going on?
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Jun 4, 2011
I have a string like this "d2-23-543-56". It could be of any length, have any number of hyphens and will always end with an integer. I'm trying to come up with a regular expression that will match everything up to and including the last hyphen so that I can replace it with an empty string and have only the 56 left over, or whatever integer happens to be at the end of the string
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Oct 29, 2010
I want to use a result for furtherer calculations but only want the whole number and not the decimal portion. In Excel there is a function "=INT(A1)" this ignores the decimal values in cell "A1",
e.g. if cell "A1=5.345"
and I use the following function in cell "A2" "=INT(A1)*3" I get the result "15"
How do I do this in JavaScript ?
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Jul 23, 2005
i have to do in the onkeypress or in onchange the float (real) field validation I try something:
function ValidaCampo(nomeCampo,TotInteri,TotDecimali)
{
DecimalPos=NomeCampo.value.Indexof(',');
Lungh=TotInteri+TotDecimali+1; //sum the ineger + decimal +
decimal separator
if ((window.event.charcode==',') && (DecimalPos>-1))
//i think exist a decimal separator so i don't add any other
else
if (DecimalPos<>TotInteri+1)
//i haven' t insert too much integer
else
if i haven't add any decimal, i add a separator with two zero value
else
if nomecampo.length<>Lungh
//error
}
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