Modulus Operator Is Not Working If Give Number More Than 24 Digits
Dec 7, 2009If number is more than 24 digits, modulus operator is not giving correct output [code]...
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Get First Digits In A Number?
Jul 19, 2010This is probably the stupidest question ever. I know in java you can take advantage of a number being an int (not double) and divide by something without getting a remainder. But in javascript you dont declare what kind of variable something is.
So my problem is: Given any double or triple digit number, how do i get all but the last digit. Like if i have 13, I need to make an int with 1. If it's 103 i need one with 10.
Regex, Remove Non Digits From A Number
Jul 20, 2005I need to remove non digits from a number.
I thought I could do this:
var phone=དྷ-p67s82'
var re=/D/g;
phone=phone.replace(re,'');
alert(phone) yields: 22-p67s82
What dumb thing am I missing. That regex removes nothing.
Specify The Number Of Digits To Display After The Decimal?
Oct 1, 2009Is there a formatting or rounding technique to specify the number of digits to display after the decimal?
View 2 Replies View Related10 Digits Cell Number Does Not Start With 0?
Feb 15, 2012I need Javascript validations of :
1. 10 Digits cell number does not start with 0
2. Valid E Mail Address and
3. 6 Digits Pincode
Phone Number Validation \ Check Whether It Exactly Contains ONLY 10 Digits?
Aug 18, 2011I want to validate phone number in my project. I include some validations. Furthermore i want to check whether it exactly contains ONLY 10 digits.nothing more and nothing less.How should i include that?
if (document.form1.phone_number.value == '')
{
alert('Please fill in phone number!');
[code].....
Logical Operator Not Working - How To Make It Work
Jul 14, 2010What kind of logical error am I making? I want the alert(); to execute if both of the variables (cjob and czip) are blank, but the only way I can get it to work is if I replace && with ||.
if(trim(cjob.value) && trim(czip.value) == '')
{
alert('Hello');
}
NOT IN / IN Operator
Aug 6, 2007Just wonder whether jaavscript can perform the NOT IN / IN as below:
if form.mytext.value NOT IN ("MYTEXT") {
alert("Mytext");
}
I did try, but not alert is displayed ad not error shown as well.
Mac IE Ternary Operator?
Jul 23, 2005I don't actually have a mac with which to test this, but I'm informed
by a colleague that one of my scripts has failed in IE on the Mac;
endless twiddling seems to point to the ternary operator as culprit.
I asked him to check that javascript:alert(true?"Yes":"No"); gave an
alert when pasted into the address bar and he's reported that it does
not.
javascript:alert("someString"); works quite happily.
Can anyone confirm this bug or help narrow it to a single version? It
seems a fairly large bug to have gone so under-reported, gooooogling
for "mac ie ternary operator" doesn't return anything helpful.
New Operator As A Method
Aug 13, 2005Is there any way to call the new operator as a method (function)? The
reason is that I've got IE as a COM object (Imagine I've brought up IE
using VB) and it's easy to call every method of any DOM element
(including window). But if I want to create a new object, then it's
more complicated. Of course I could always execute js code (using
window.execScript) which will create the object and save it as a
variable on the window object and then pick it up from the COM creator,
but really...
Consider the following page snippet which nicely adds an option to the
empty select element. Of course, I could use the W3C createElement,
addChild, muckWithDOM approach to avoid the execScript, but both of
these are going to add huge amounts of time and substantial complexity
to an otherwise one liner:
<form method=pos action=''>
<select name=sel id=sel></select>
<script type='text/javascript'>
var sel=document.getElementById('sel');
sel.options[0] = new window.Option("foo", "bar");
</script>
</form>
Can't I do something like
window.Option.newInstance("foo", "bar")
in place of the
new window.Option("foo", "bar") ?
How To Increment Without A ++ Operator?
Jul 30, 2002I have a for loop and would like to increment a variable for (let's say) 2 instead of one (++). How can I do that?
I have tried for instance x + 2 instead of x++ but when I try it in IE an error saying that a script is making IE to run slowly and then nothing happens. So how to do this?
Special Operator About Function
Dec 14, 2006<script>
var sd=function(){
return{
f1:function(){
alert('f1');
},
f2:function(){
alert('f2');
}
}
}();
sd.f2();
</script>
when execute sd.f2();it will alert f1,who can tell me why?
'in' Operator And Feature Detection Technique...
Feb 9, 2006We all know that feature detection technique works from very beggining
of user-agents supporting JavaScript. We can alway check if eg.
document has a write property or smth else:
if(document.write) {
}
We could do that for all of objects, so i have been surprised when i
found 'in' operator, which for above example would be used like this:
if("write" in document) {
}
So i have questioned myself what for ? I can always do:
if(document["write"]) {
}
or even
var prop = [...];
if(document[prop]) {
}
which is supported better then 'in' operator ('in' is supported since
W. IE 5.5 and NN 6 - around 2000 year). I can only guess that 'in' was
provided in W. IE 5.5 only for convenience... but that is my guess and
someone more knowlegable could write here some more opinions on this
operator...
Pass Operator As Variable Without Eval?
Mar 10, 2010How you might achieve the following without using eval()? I've come up a bit short:
function addOrSubtract(operator) {
var a = 10;
var b = 5;
var answer = eval(a + operator + b);
alert(answer);
}
addOrSubtract('+') // alerts 15
addOrSubtract('-') // alerts 5
Statement Faster Than The Ternary Operator?
May 20, 2009I'd like to know which is faster or have a better performance between :
Code JavaScript:
if (flag) {
var v = "something";
} else {
var v = "else";
[Code]...
Missing Name After Operator Delete Keyword
Nov 13, 2010this.delete = function(obj){
..
Is that it ? I can't have delete ? Or can this be written in some other way, including delete ?
JQuery :: .fadeTo Not Working With Just An Opacity Number?
Oct 25, 2010according to the api, the fadeTo method can now be called with just an opacity in 1.4.3, no duration, however, i cant get it to work. here's a jsbin with what i've tried: [URL]if i modify .fadeTo(0) to .fadeTo('slow',0) it works.
View 3 Replies View RelatedValidate Phone Number Code Isn't Working
Oct 26, 2010how to validate forms and the next topic I'm learning is the phone feature! My code isn't working and not sure why! I read other opinions and tried to follow some templates but again.. Nothing is working out for me..
[Code]...
Replace Each Digit Of A 4 Digit Integer By( The Sum Of That Digit Plus 7) Modulus 10?
Oct 27, 2009I'm trying to replace each digit of a 4 digit integer by( the sum of that digit plus 7) modulus 10. And then swap the first and third digits and swap the second and fourth digits.this is what i have come up with so far and I cannot get it work.
<html xmlns = "http:www.w3.org/1999/xhtml">
<head>
<title>Encryption</title>
[code]....
JQuery :: Combine 2 Click Events With Operator ||?
Sep 23, 2011I want to combine two click events to one function.Is there a syntax way like when you click this or you click that do something [code]
View 1 Replies View RelatedAND Operator - Alert Not Shown When Values Selected
Feb 25, 2009I am trying to run some code that will check if the user enters two values from 'depart' and 'arrival' select lists that would make up an invalid journey:
var cdate, ctime, cdepart, carrive, cname;
with(window.document.example) {
cdate = date;
ctime = time;
cdepart = depart;
carrive = arrive;
cname = name;
}
if(trim(cdepart.value) == 'Uptown' && trim(carrive.value) == 'Downtown'){
alert('invalid journey');
cdepart.focus();
return false;
}function trim(str){
return str.replace(/^s+|s+$/g,'');
}
However when I select the values the alert is not shown? I think My syntax is okay, maybe not?
Ternary Operator Syntax And Case Condition
Aug 22, 2010It's well know that the ternary operator syntax is something like so:
Code:
(test) ? true doThis : false doThat
Suppose that in case condition is false we want do nothing. How to code "do nothing"? May I let it blank or there are an appropriate syntax?
Random Number Within A Range Not Working With Form Values?
Sep 28, 2009This statement is to produce a random integer within a specified range. I get the desired result when passing the values within a function like this:
Code:
<html>
<script type="text/javascript">
function get_randomRange(low,high){
[code]...
the results form the second example look like the number are possibly being multiplied somewhere? why does the first example work and the second not?
Default Operator ( || ) Doesn't Work With Empty Array?
Aug 13, 2010anotherVar should be -1 if there are no matches, but it doesn't seem to work var string = "abadafa"; var matches = string.match(/a/gi); //doesn't work with /z/ for example
var anotherVar = matches.length || -1; The default operator should return the second value if the first is null or false, and according to try { alert(matches.length);
}
catch (e){
alert(e); //alerts null
} it's null.
fyi: http://helephant.com/2008/12/javascript-null-or-default-operator/
Validations Are Not Working If Enter Number And Special Character For Any Field?
Feb 22, 2010Im trying to pass one variable as 20* and after that im trying to check whether any special characters exist or not. But 20* cant be converting to string. It is giving script error.because of that my validation goes wrong.
if i pass "20*" as input ( with quotes) , validations working fine. how to convert string if it is 20*
i tried new String() finction and adding "" to that varible. But it is not working.
Regalur Expressions - Operator On Words And Phrases Without Adding Terms To The Match Array?
Feb 3, 2011I have a set of regular expressions that make heavy use of the | operator on sections that I do not really need to extract a match from. For example:
Code:
var regexp = /([A-Z][A-Za-z]+) (jumps( high)?|leaps|bounds) over ([A-Z][A-Za-z]+) and (grabs|snags|gets) (a|an|the) (apple|orange|pear|grapes)/
The important part for extracting from the match array after using regexp.exec() are the names (the ([A-Z][A-Za-z]+) parts), I don't care which of the other things are matched. The problem is that using the | operator seems to necessitate using the () and adding a term to the match. This makes it difficult to know which term in the array will be the names, especially after editing the middle.So I'd like to be able to use the | operator on words and phrases without adding terms to the match array.