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SuiteScript 1.0 nlapiGetLineItemCount

I'm trying to use the nlapiGetLineItemCount('purchaseorder');command to get the number of lines of a Purchase Order. But it just return '-1' .
Is there something wrong with my code?
Thank you!
EDIT: I've also tried nlapiGetLineItemCount('item'); and it's have the same behavior if there is something inexistent. Like this: nlapiGetLineItemCount('trying_lines');
EDIT 2 : I'm trying to use it directly on CONSOLE.

If you tried in browser console you should be in "Edit Mode" (hit the record edit button or add &e=T to record url).
nlapiGetLineItemCount('item');
ClientScript 2.0
require(['N/currentRecord'], function (currentRecord) {
console.log('getLineCount', currentRecord.get().getLineCount({sublistId: 'item'})
});
UserEvent 2.0 (in before load function)
function beforeLoad(context){
log.debug('getLineCount', context.newRecord.getLineCount({sublistId: 'item'}))
}

Use nlapiGetLineItemCount('item'); to get the number of line items in a purchase order.

This call will only work in the context of: User Event, Client, or Workflow Action scripts. What script type are you trying to run it in?
In order to run this in the console and get a sensible result you'd have to be in the console opened on Purchase Order edit window.

Trying to limit a tampermonkey script to page section

first of, I'm a total, utter newbie. I have to work with this, because nobody in my office is even halfway computer literate. The person who wrote the initial script left the company and we can't get ahold of him anymore.
Now, the problem at hand:
I have a script that's a "look for words and highlight them in garish colour" affair. Now I tried to modify it so that it only runs in a
This is the code:
function Find(node){
if(!node)
node=document.getElementsByTagName('div class="listing__top-info"')[0];
this.rootNode=node;
this.hits=0;
this.selected=0;
this.selection=[];
this.build();
Yet when I run this code, I get this in the log:
"TypeError: document.getElementsByClassName(...)[1] is undefined" (I also don't understand why the [0] gets changed to a [1] here.)
The script is already set to run at document-idle.
The version of the script that works, is set to look for "body", and then marks/highlights as intended.
What am I missing?

Try using querySelector instead:
node = document.querySelector('div.listing__top-info');

How to display inputs in Jamsine SpecRunner?

I started using Jasmine to test javascript code and its working fine. But I would like to display inputs to the test suite in specrunner.html.
I tried HtmlReporter() and TrivialReporter() but no luck.
SPEC CODE:
checkAddition("TEST_SUITE","Test INPUTS1",getResult(2,3),5);
checkAddition("TEST_SUITE","Test INPUTS2",getResult(3,8),11);
function checkAddition(suite_name,testcase,result,equalto){
describe(suite_name, function() {
it(testcase, function() {
expect(result).toEqual(equalto);
});
});
}
JavaScript CODE:
function getResult(input1,input2){
return input1+input2;
}
OUTPUT :
EXPECTED OUTPUT :
I need to display inputs that looks like expected output (I edited code in browser using firebug to share expected output).
Please help me. Help would be appreciated :)

The built reporters won't do this. You either need to need to hack the innards of those built in reporters to do this (you're on your own with this route), or create your own reports from scratch (see here for some examples).
But I find this to be a strange request. Perhaps there is a cleaner way to achieve your goal, whatever that may be. Maybe a test suite isn't what you want if you want this info.

"Stack overflow in line 0" on Internet Explorer

I realise this is not the ideal place to ask about this in terms of searchability, but I've got a page whose JavaScript code throws "Stack overflow in line 0" errors when I look at it in Internet Explorer.
The problem is quite clearly not in line 0, but somewhere in the list of stuff that I'm writing to the document. Everything works fine in Firefox, so I don't have the delights of Firebug and friends to assist in troubleshooting.
Are there any standard causes for this? I'm guessing this is probably an Internet Explorer 7 bug or something quite obscure, and my Google-fu is bringing me little joy currently. I can find lots of people who have run into this before, but I can't seem to find how they solved it.

I ran into this problem recently and wrote up a post about the particular case in our code that was causing this problem.
http://cappuccino.org/discuss/2010/03/01/internet-explorer-global-variables-and-stack-overflows/
The quick summary is: recursion that passes through the host global object is limited to a stack depth of 13. In other words, if the reference your function call is using (not necessarily the function itself) was defined with some form window.foo = function, then recursing through foo is limited to a depth of 13.

Aha!
I had an OnError() event in some code that was setting the image source to a default image path if it wasn't found. Of course, if the default image path wasn't found it would trigger the error handler...
For people who have a similar problem but not the same, I guess the cause of this is most likely to be either an unterminated loop, an event handler that triggers itself or something similar that throws the JavaScript engine into a spin.

You can turn off the "Disable Script Debugging" option inside of Internet Explorer and start debugging with Visual Studio if you happen to have that around.
I've found that it is one of few ways to diagnose some of those IE specific issues.

I had this problem, and I solved it. There was an attribute in the <%# Page tag named MaintainScrollPositionOnPostback and after removing it, the error disapeared.
I added it before to prevent scrolling after each postback.

If you came here because you had the problem inside your selenium tests:
IE doesn't like By.id("xyz"). Use By.name, xpath, or whatever instead.

Also having smartNavigation="true" causes this"

I set up a default project and found out the following:
The problem is the combination of smartNavigation and maintainScrollPositionOnPostBack. The error only occurs when both are set to true.
In my case, the error was produced by:
<pages smartNavigation="true" maintainScrollPositionOnPostBack="true" />
Any other combination works fine.
Can anybody confirm this?

Internet Options
Tools
Internet options
Advanced
Navigation section
Click > Disable script debugging
display a notification about every script error
sign in
You will smile !

My was "at line 1" instead but...
I got this problem when using jQuery's .clone method. I replaced these by using making jQuery objects from the html string: $($(selector).html()).

I have reproduced the same error on IE8. One of the text boxes has some event handlers to replace not valid data.
$('.numbersonly').on("keyup input propertychange", function () {
//code
});
The error message was shown on entering data to this text box. We removed event "propertychange" from the code above and now it works correctly.
P.S. maybe it will help somebody

I don't know what to tell you, but the same problem occured with jQuery table sorting and SEARCH.
When there is nothing left in the table, where you are searching a string for example, you get this error too. Even in Google Analytics this error occurs often.

In my case I had two functions a() and b(). First was calling second and second was calling first one:
var i = 0;
function a() { b(); }
function b() {
i++;
if (i < 30) {
a();
}
}
a();
I resolved this using setTimeout:
var i = 0;
function a() { b(); }
function b() {
i++;
if (i < 30) {
setTimeout( function() {
a();
}, 0);
}
}
a();

This is problem with Java and Flash Player. Install the latest Java and Flash Player, and the problem will be resolved. If not, then install Mozilla Firefox, it will auto install the updates required.

Javascript error

I'm getting a JS error on displaying a page: Nothing concrete is specified but the line where it seems to be thrown. When looking into the source code of the page, I see the error is thrown inside the following script, but I can't understand why! It's only about loading images!
<SCRIPT language=JavaScript>
<!--
function newImage(arg) {
var rslt = new Image();
rslt.src = arg;
return rslt;
}
function changeImages(a, b) {
a.src = b;
}
newImage("\/_layouts\/images\/icon1.gif");
newImage("\/_layouts\/images\/icon2.gif");
// -->
</SCRIPT>
The error I am getting is when clicking on a drop down context menu on a page, for this line:
newImage("\/_layouts\/images\/icon1.gif");
The object doesn't accept this property or method
Code: 0
I really don't see what could happen... Any tips on what may be happening here?

Have you tried loading your scripts into a JS debugger such as Aptana or Firefox plugin like Firebug?

Why are you escaping the forward slashes. That's not necessary. The two lines should be:
newImage("/_layouts/images/icon1.gif");
newImage("/_layouts/images/icon2.gif");

It is hard to answer your question with the limited information provided:
You are not showing the complete script
You never said what the exact error message is, or even what browser is giving the error.
Which line number is the error supposedly coming from?
I'd recommend using Firebug in firefox for debugging javascript if you aren't already. IE tends to give bogus line numbers.
And as others have already said, the language attribute for script tags is deprecated.

Write proper xml with the " around attributes.
<script type="text/javascript">
function newImage(arg) {
var rslt = new Image();
rslt.src = arg;
return rslt;
}
function changeImages(a, b) {
a.src = b;
}
newImage("/_layouts/images/icon1.gif");
newImage("/_layouts/images/icon2.gif");
</script>

should your script block not be:
<script type="text/javascript">
?

For starters, start your script block with
<script type="text/javascript">
Not
<script language=JavaScript>
That's probably not the root of your problem, but since we can't see your script, that's about all we can offer.

You probably need to enlist the help of a Javascript debugger. I've never figured out how to make the various debuggers for IE work, so I can't help you if you're using IE.
If you're using Firefox or you CAN use Firefox, make sure you have a Tools / Javascript Debugger command. (If you don't, reinstall it and be sure to enable that option.) Next, open up the debugger, rerun the problem page, and see what comes up.

How are you calling changeImages? It looks as though you are not saving a reference to the images returned by newImage. You probably want to save the results of newImage and pass that to the changeImages routine. Then changeImages should look like this:
function changeImages(a, b) {
a.src = b.src;
}
You also may want to ensure that the images have finished loading before calling changeImages.
You've posted the routine that throws the error, without posting the error or showing us how you are calling it. If none of the answers posted fix your problem then please post some detail about how you are calling the method, which specific line the error is on, and what the error message is.

You firebug to debug.
http://www.mozilla.com/en-US/products/download.html?product=firefox-3.0.10&os=win&lang=en-US
https://addons.mozilla.org/en-US/firefox/addon/1843
JSLint is also a nice resource.
http://www.jslint.com/
Using CDATA instead of the <!-- // -->
http://www.w3schools.com/XML/xml_cdata.asp
<script type="text/javascript">
<![CDATA[
]]>
</script>