Argument Checking
Aug 8, 2006Does anyone have any coding rules they follow when doing argument checking?
When arguments fail during check, do you return from the call with an ambiguous return value, or do you throw exceptions?
Does anyone have any coding rules they follow when doing argument checking?
When arguments fail during check, do you return from the call with an ambiguous return value, or do you throw exceptions?
how to you use the result of a function as the argument for another function instead of passing the actual function to it. i.e.
function foo2(){}
function foo(func){}
foo(foo2);
This passes foo2 to foo, can I do foo(foo2()) ? i.e. is the difference between whether a function is passed or evaluated dependent on whether you use "()" after the function name?
If I try to append a PARAM tag twice I'm having problems:
var.medDiv = document.getElementById("myDiv");
var medObj = document.createElement("object");
var p = document.createElement("param");
p.setAttribute("FileName",this.URL);
medObj.appendChild(p);
p = document.createElement("param");
p.setAttribute("AutoStart","false");
medObj.appendChild(p); // <-- this one
medDiv.appendChild(medObj);
The line with the "this one" comment triggers IE to tell me that it has
an invalid argument. If I change the order of the PARAMs then the new
second PARAM will give me the error. If I move the setAttribute to after
the appendChild I still get the error.
Suppose I have a frame like 123bottom.html and within it, I want to promt
the user for a response (in the <HEAD>) like
var ans = prompt("What is your name?");
and then reload the page (via, say window.location.reload() ?)
using the argument of the value of ans appended onto the url so that, in
effect, say, I am calling the new frame as
123bottom.html?ans=Ike
Can someone show me how I need to call the page again, itself, like this
once I have the value for ans? Thanks, Ike (himself)
Quite often, I define variables like so:
Code:
var something = (function () {
if (x) {
[code]....
Can you pass an array reference to a constructor? I don't know if it's because the syntax is screwy or it's impossible, but the following doesn't work.
// row constructor with array called fields
function RowObject(fields)
{
this.fields=new Array();
this.fields=fields;
}
row=new RowObject(fields);
alert(row.fields[0])
How do you pass an argument to a function.
for example if you have a <span id = "test" onMouseOver ="myfunc(x)>
eg you have lots of differant span id's but you want then all to have a certain background-color with each individual on mouseover event without having to write separate code for each span id
eg <span id=" test2"onmouseover ="this.style.background ='red'>....
How can I modify any one of these global variable identified via a function
argument?
var x1 = "bla";
var x2 = "bla";
var x3 = "bla";
function modify(variable) {
???? [variable]???? = "blabla":
}
The following onclick should change the string value of variable 'x1' from
"bla" to "blabla", via the above modify() function.
<a ... onclick="modify('x1')">
I amreceivingthe following error on IE8:Invalid argument. jquery-1.4.2.js, line 5899 character 5 Now I have used the debugger, and this seems to be the only error it catches. And I realize that I could go through each line of what I wrote and figure out what line triggered this portion of jQuery. However in the interest of making jQuery better, I want to understand this error and fix it in the jQuery file.
[Code]...
I have used an object in the past as a function argument, but this was for a plugin that I wrote. Using it in the architecture of a plugin it worked. BUT, this time, I just want to write a normal function, but still use an object to set defaults and pass in changes to those defaults through as a param. Is this possible, or do I have to make this a jQuery function like $.myfunction() ?
[Code]...
I'm trying to pass an array as an argument for a function on load of an html page, but can't seem to get it to work. Here is my code.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
[code]....
i have an initAll() called on window.onload within initAll() I assign a few onclick handlers to some links. However, it would be great if I could pass an argument to the handler, so I could use the same handler every time... but if I include two brackets for each handler, it executes immediately... ignoring the 'onclick' bit...
window.onload = initAll;
function initAll(){
document.getElementById('btn_events').onclick = getSpecificFeed('events');
}
[code]....
This is a post relate to this post:DOM inside variable with innerHTML?To reduce any ambiguity this new thread deals with the code below.The previous post was more about how DOM can be used in a variable.This one has to do with a similar problem, but more with functions.
<html>
<head>
<title>Test</title>
[code]....
I've been trying to show a div using jQuery's show function with the scale effect. My code works fine in Firefox. When I test it in IE7, it breaks. I narrowed it down to either the origin argument of the scale effect, or the time argument of the show function (which seems unlikely). Like this:
Works in IE7, italics added to show commented code better:
Code:
$(document).ready(function() {
$("#hover").hover(
function() {$("#content_show").show("scale",{percent: 100, direction: 'vertical'});},//, origin: ['center','center']},500);},
[Code]....
Also, not as important, but what is the syntax of the origin property? What values can I use in it?
I'm finishing my javascript form validator (only text fields for now) and here's one of the last things that's left.
I'm using class names of input elements as parameters for my validator. To find them i use Element.hasClassName(id, class) method from prototype library. I want to implement minlength parameter - so i grab a regexp tutorial and after a minute i had something like this minlength[[1-9][0-9]*], which finds minlength[1], minlength[666] and so on.
Great, but how to pass this as a paramter to hasClassName method, which requires string as a className?
How can I create argument defaults for a function? I have this function (the purpose of the lines I included were to set defaults if the user forget to input something simply to prevent an error.
Code:
addHSLink = function (hsElem, hsUrl, hsType, hsTitle, hsWidth, hsHeight) { //hsElem[string], hsUrl[string], hsType[string], hsTitle[string], hsWidth[string/number], hsHeight[string/number]
var jQElem = $(hsElem);
if (typeof hsUrl !== 'string') {
hsUrl = '[URL]';
} if (typeof hsTitle !== 'string') {
hsTitle = '';
} if ((typeof hsWidth !== 'string' && isNaN(parseFloat(hsWidth))) || hsWidth !== 'number') {
hsWidth = 800;
} if ((typeof hsHeight !== 'string' && isNaN(parseFloat(hsHeight))) || hsHeight !== 'number') {
hsHeight = 600;
}
//Some other code
}
I would like to save some programming space and time by finding another way to set defaults. I saw somewhere that you could set a default in the arguments list
Code:
function someFunction(aVariable = false) {
//some code
}
But when I try to do this with all my arguments, I get the error:
"Missing ) after formal parameters".
I am trying to pass _marker to showEquipmentDataDiv() in the code below but I get a runtime error that says
Quote:
The alert(_marker.getTitle()) works so the marker is being passed to getLocationEquipmentHTML() correctly.
Code:
I had the following code in a page I was working on recently:
Code:
<tr><td><input type="button" id="larrow" value="<-----" onclick="doScroll(-1);"</td>
<td><input type="button" id="rarrow" value="----->" onclick="doScroll(1);"</td></tr>
[code]....
There is an error in the util.js file:
wrapperDivElement.style.height=newIframeHeight+�px�
Does anyone know the fix?
I'm getting error missing ) after argument list from the below code, let me know what is wrong with the below code:
View 9 Replies View RelatedI'm testing my webpage in IE8. In firefox it looks and runs greag, but in IE 8, one issue I'm having is this: I have a button that opens a popup window. Works fine in Firefox, but I get 'invalid argument' error in IE8 and the window does not open. I've enabled at a whim some scripting things in the Internet Options.
Here's the code. The "invalid argument" occurs on the window.open call.
In addition, is there any way to have that tile I've given it, "my Site..." appear in the window header? Right now it's not appearing at all in either browser.
If a function with multipe parameters has an event object as one parameter then how do we pass an event argument to that function without using inline function calling?
For example:
Code:
function key_pressed(ev,msg){
var keycode;
if (window.event){
ev = window.event;
[Code].....
the structure of my source code is like this:
<script>
C = function(){
//some initialization
}
C.prototype.start = function{
//some action
setTimeout(arguments.caller.callee, "200");
}
var obj = new C();
obj.start();
</script>
This should execute the method start every 200 milisec, but (in some cases) it gives me an error because arguments.caller is null. Is there a "direct" method to use setTimeout without this arguments? stuff?
BTW: I'm working with IE Version >= 5.0
Is there a better solution to get start work?
Due to the following script IE shoes invalid argument error
jQuery(document).ready(function(){
jQuery(".color_tag_cloud a").each(function(){
var links = jQuery(this).attr("href");
[code]....
How I use $.ajax() for passed argument to php function other file example index.php.
View 1 Replies View RelatedI have just upgraded one of our development sites to 1.3.2 and ui 1.7. I have also updated all of the plugins (forms,validate,thickbox,calculation,blockUI,autogrow) to the latest versions which should all be compatible with 1.3.2 and the site is working perfectly in Firefox 3 on OS X and XP. However on IE8rc1 and in IE7 compat mode I am getting an Invalid Argument error reported at line 12 of jquery-1.3.2.min.js. That is the usual really helpful IE error message and I have been unable to track down the source of the problem. I have noticed that some people have seen this problem with the ui.accordion and 1.7 was supposed to have fixed the issue. Does anyone know of a fix (apart from banning the use of IE - if only)? If I could get the error in FF I could at least use Firebug to debug it. I think I might need to comment out each plugin and see if I can trace the source of the error.
View 7 Replies View Related