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?
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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?
'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 :: 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?
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');
}
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]...
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/
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.
Get Rid Of Special Characters?
Aug 3, 2010I am copying from microsoft word a simple word into my application(rich text editor)..
i get special characters added to it. how can i get rid of them?
how can i solve the issue?
Displaying Special Characters In A <div>
Jul 20, 2005I have a problem displaying a divbox containing a html-textarea -
everything works fine with "normal" characters. However, when the
textarea contains special chars like <P> or ' , the box fails to show:
function show(divbox)
{
divbox.style.display=''
}
<div id="divbox" style="display:none" >
<form action="action.php" method="post>
<textarea name ="txt">Text</textarea>
</form>
</div>
If the Text in the textarea is for instance
HERE IS A "QUOTE"
it works fine, while
HERE IS A 'QUOTE'
produces an error
<br>-tags works fine, but
<p>-tags doesn't
Treating Special Characters
Jul 20, 2005I have a number of scripts that take special characters and convert them
to their ascii equivalents and them store them in the database.
However I am running into a problem that I have some of those fields are
loaded to an array and inserted into cells dynamically. As an example
the array would be:
var my_array = [ ["52","Source Data"], ["19","Body &
Soap"] ];
Then I have some javascript that creates the cell and inserts the value
into a cell text node like:
var x = my_array[1][1]; // this would be "Body & Soap"
//create the cell
myTD=document.createElement("TD");
//create the text node
myText=document.createTextNode(x);
// Appends each node following the structure.
myTD.appendChild(myText);
What I see on the output is: "Body & Soap"
What I should see is: "Body & Soap"
Anyone know how to get around this?
Ajax And Special Characters
Feb 14, 2007I'm having trouble with ajax return invalid characters.
it keeps returning: � � or ? ?
and it should be: © ®
any ideas as to how i can fix this?
Check For Special Characters
Nov 8, 2005i have a textarea on the page. how can i check if user inputted any spec. characters?
like ; ! * & $ and etc
Special Form Check
Oct 13, 2006i need a form check which:
displays error messages in a new window displayed in _self or _blank or etc... not in an alert box AND stops the cgi from sending data forward to my inbox (i'm not sure if it stops submit when just checked with javascript: if form.field.value='xyz')...
JSP Reg Special Characters Validation
Sep 28, 2010I am new to JSP programming and was trying to do some validation on my JSP page as follows:
Special characters : ><&"'()#%;+-
The above mentioned characters needs to be validated at the client side. I am using the expression
var Uidalph = /^w*>*w*$/;
!Uidalph.test(document.form.userUid.value)) {
buildErrMsg( "Username","Invalid characters")
How To Avoid Special Character Conversion ?
Aug 23, 2005Value entered in textarea is: "this "TEST" is not going well"
JS sends to server this value: "this "TEST" is not going well"
How to force JS not to convert the string ? I want JS to send exactly what
is typed in the form controls. Is there a function to call?
Want To Extract Special Characters From A String
Nov 26, 2010I want to extract the characters other than alphabets (a-z and A-Z), numbers (0-9) and hyphen( - ) from a string. Is there any way for doing this?
View 2 Replies View RelatedValidate The Special Character In Textbox
May 26, 2010I am new to php and javascript. I facing the validated special character in text box. in following code is my codes.
[Code]....