Return Only Acceptable Inside Of Try?
Apr 1, 2009
placement of the return in the following code:
var abc;
try{
//there can possibly be 1 or more answers;
abc = getAnAnswerFromPossibleAnswers("type","key");
[Code].....
One person says the return should go inside the try because otherwise during runtime a null pointer exception (NPE) can be thrown. The other says they tested and never got an NPE - even if the value didn't exist, abc[0] returned an empty object (the test showed it returning empty curly braces).
Must the return go inside the try or is it ok to be outside as in the above snippet?
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Nov 6, 2009
i cant find a way to return a value to a function inside a class...seem that when try to output it(the code with red markup)..its output is undefined..
function AjaxProcess(ElementId,amethod,url,element,callback_function,acontrol,ProcessImage){
this.ElementId=ElementId;
this.amethod = amethod;[code].....
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Jul 20, 2005
I have a calendar where i write my events.
If I have 2 events in the same day, how to put a carriage return between the
events in the alert part of message?
For example, I want this alert message:
Event one to the office.
Event two to the store.
The string that I use actually is:
fAddEvent(2003,9,17," Event one. Event two.","alert('Event one to the
office. Event two to the store.');","#00ff00","red");
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Jul 6, 2011
I'm working on a project that requires me to send stuff through an AJAX $_GET request to a PHP page which then echoes a string which then is fed back to the form on the first page.
So the GET url looks something like this:
Code:
dataminer.php?question=kassasumma&q=500&kale=10%&nro=6
I have tried to escape that URL with various escaping methods including
Code:
escape()
[Code]....
but, with no luck. The server keeps giving me a 406 Not Acceptable and it's because of the percentage sign (which is essential) in the url.
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Jan 29, 2010
I am trying to find a format for a string that could be used to instantiate a Date object which would include only a month and a year.I can't find documentation on what formats of dates are accepted.
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Jul 17, 2006
question: if you want a link which simply runs a js function is it acceptable to have no href? the problem with this is the cursor doesnt change when you hover over, but if you put # as the href it jumps to the top of the screen which is sometimes unacceptable. what it the best solution to this? granted you could do event handling behind the scenes and just intercept the clicks and prevent the href from going anywhere, but sometimes you just want to stick an onclick on the anchor tag!
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Apr 27, 2010
I'm working on a very Javascript heavy application, and we've set up a number of different Objects to handle the data on the page. Very often, we'll need to send all of the data from these objects to PHP. Right now, we're using JSON.stringify. Are there any issues with this? It seem's like it does exactly what we need, but are there any downsides?
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Jun 3, 2010
All is on the title, sorry for my english, i'm french :) I have an html page with style
<style>
#mydiv {
margin-left:auto;
margin-right:auto;
width:250px;
}
</style>
with jquery, i try to get the margin-left ($('#mydiv').css('margin-left'), but the function return 0px, unable to retrieve the good value (auto) anyone has idea to retrieve the value "auto" when margin-left is "auto" ?
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Nov 6, 2010
I've been searching for about 3 days on this topic. I'm trying to get a template field inside of an ASP.Net detailsview control inside of an ajax updatepanel to work with the jquery datepicker. Very frustrating! I'm using VB with VS 2010. I can get the datepicker to work fine with a simple text box inside of an update panel but when I put it inside of a detailsview control it stops working.
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Apr 11, 2007
consider the next code:
var obj = {};
with(obj) {
var x = 10;
}
print(x);
print(obj.x);
It prints 10 and undefined. Here, one could expect that obj.x get the
value 10. But it's not the case, because variable declarations are
placed at the start of function code (or global code), so the
previous code is equivalent with:
var obj;
var x;
obj = {};
with(obj) {
x = 10;
}
print(x);
print(obj.x);
You can clearly see now that x is placed in the outer context. But
consider the next:
var obj = {};
with(obj) {
eval("var x = 10;");
}
print(x);
print(obj.x);
I was expecting that obj.x would get the value 10 here. But no, it
gives the same output as the previous code. I tested it with
spidermonkey, kjs and ie jscript. Looking at the ECMA spec, I could
not find anything that describes that behaviour. Code:
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Jan 14, 2011
I have this in my javascript code but have no idea on how a returned value works/where does it return to? what do i do/or can i do with a value that gets returned?
I am asking this so i can learn on how to use it cos i am new to all this and dont know how it works...
Here my full code:
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Oct 13, 2005
Do you have to use the onClick attrib to have
return false
work?
i.e. is it possible to do
<a href="javascript:somefunct();return false;">
and have the page not reload with 'false' or the browser not complain about
illegal use?
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Jan 17, 2007
I have a form on a web page that requires to click on a button to
submit the information. I have two questions about changing this form:
1. Is there a way that I can change the script so that the form can be
submitted by hitting the enter key?
2. Is there a way that I can have the Username and Password boxes
cleard after the form is submitted?
You probably don't need the code for the form as it is pretty basic but
here it is just in case.
<form name=login>
<table width=225 border=1 cellpadding=3>
<tr><td colspan=2><center><font size="+2"><b>Bombers Only
Area!</b></font></center></td></tr>
<tr><td>Username:</td><td><input type=text name=username></td></tr>
<tr><td>Password:</td><td><input type=password name=password
size="20"></td></tr>
<tr><td colspan=2 align=center><input type=button value="Login!"
onClick="Login()"></td></tr>
</table>
</form>
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Aug 1, 2009
i am using ajax but this is the problem in js it is giving me a NaN when i goto check the output. on two different servers two different responses on my localhost test environment i am getting the correct info and on the server online i get NaN response. i am using this to set the width of my hp bar
Code:
document.getElementById("ehpBar").style.width=count1+"%";
and count1 looks like this
Code:
var count1 = hp/basehp*100;
i have tried rounding it and everything and i just get the same stupid NaN error. I can use each variable by itself and it outputs the correct number on both servers and then when i try to divide it NaN on one server and works perfectly on the other. I know it is probably something simple i am just missing it.
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Jan 27, 2009
I am using BBcodes and want to allow the client to enter their image url into an alert box.
Exactly as it is done in this forum ;)
[URL]
is this using a javascript alert box or a pop up window? How do I put the input box into it ?
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May 17, 2009
Afternoon all, Have a pretty simple function, that requests a number to be entered.
I want to return that number, but i seem to be typing something wrong in the return value.
function newFunction(a, b)
{
var newArray = new Array(a);
for (var i = 0; i < 5; i = i + 1)
[Code]....
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Sep 29, 2009
Its a ads rotation code:
Dont know why it doesnt work...
Here go(k); function might do this mass (output-->NaN).
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Aug 21, 2007
I am populating a field on my page using a php include. I am asking javascript to update another element with that field's value. The value written to the select input box is Ƈ:Any Provider'. The process works fine in Firefox. In IE6 it does not write. the value nor does it throw an error. What am I doing wrong?
input form:
[PHP]<form method="post" action="" name="inputForm">
<label for="provider">Name of Provider</label><select class="input" name="provider" size="1" style="width: 20em"><?php nameprov();?></select>
<input type="button" name="button" value="Upload" onclick="postthis()">
<div id="status"></div>
</form>
The script in the head element:
function postthis(){
var provider = document.inputForm['provider'].value;
var report = document.getElementById("status");
var message="The Value of Provider Block is: " + provider;
report.innerHTML = message;
}
In firefox, "The Value of Provider Block is: 1:Any Provider" is written in the report element. In IE6, "The Value of Provider Block is : " is written in the report element.
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Nov 23, 2005
I know the answer must be yes, but I am really having a hard time figuring this out. I have a simple script below, that calculates age (I know I need to do some more work). I want to redisplay the value returned from the function. It works OK, because the result displays correctly in the alert. Code:
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Feb 27, 2006
I'm having a problem. I was able to get the edit working fine. I was able to get it to hide the current div and go to a different div. When I combine the two, the edit works but I cannot go to the different div.
I'm thinking something is missing here?
function goto_testDiv()
{
return formCheck(this);
document.getElementById('startDiv').style.display = 'none'
document.getElementById('testDiv').style.display = 'block'
}
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Mar 6, 2006
I have a form and a submit button .on clicking submit button function validate call.this function call another function (say func) .this func function vallidates some input and return true or false value to the validate function this then return true or false value to the submit button .I want that func directly return true or false to the submit button.
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Jun 13, 2011
How can I use the return value from prev_picked() in my ajax call?
Code JavaScript:
function autosuggest_results (info)
{
if (info.length > 1)
[Code].....
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Apr 29, 2004
PHP Code:
function mnu() {
var thismenu=this;
var mDiv = document.createElement("div");
mDiv.getVisibility=function() { thismenu.getVisibility(this); }
alert(mDiv.getVisibility());
document.body.appendChild(mDiv);
}
mnu.prototype.getVisibility=function(div) {
if (div.style.visibility=='none' || div.style.visibility=='hidden') {
return 'hidden'
}
else {
return 'visible'
}
}
so i attach a function to mDiv, which (should) return visible or hidden, but it doesn't, i get an undefined
but when i put alert boxes in the function itself (in the if-clause), it gives me the correct values....
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Jan 8, 2007
when, inside a function, one simply says:
if(...) {return;},
one means something like exit, or leave, right?
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Apr 18, 2006
Is it necessary to return a value from the event handlers? For
instance, what does the return value in the following code signify?
What will be its impact if it returned otherwise (true)?
<a href="http://www.w3schools.com"
onmouseover="alert('An onMouseOver event'); return true">
<img src="Click.gif" width="100" height="30">
</a>
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Jul 11, 2006
Can javascript using pointer or pass variable by reference?
Or I need to using object or Array to return the two values?
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