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JavaScript validation errors/warns I cannot solve [message #484272]

Sat, 05 September 2009 04:27

Eclipse User

Hi, I'm using the setup described below (was unable to add it as an attachment via the beta forums). Activated a JavaScript support for my PyDev project, because I have some JS code there, then added Firefox Browser Support Library.

But still I'm experiencing Problems I'm unable to solve while developing a special kiosk app for single browser. I'd be happy with merely masking these errors, but I couldn't find that options as I don't want to turn off entire error classes.

I'm not very strong in JS so I'll appreciate a point to where the code is wrong.

"event cannot be resolved"
Line:

<body onmousedown="event.preventDefault()"> <!-- disables image dragging in Firefox -->

"style cannot be resolved or is not a field"
Line:

(<span style="color: blue; cursor: pointer;" onclick="var s=document.getElementById('debugQueryTable').style;s.display=s.display=='none'?'':'none';this.innerHTML=this.innerHTML=='Show'?'Hide':'Show'">Show</span>)

"options cannot be resolved or is not a field"
Line (looking for the <select> element):

var o = document.getElementById('id_publisher').options;

Thanks for any hints.

  Eclipse IDE for C/C++ Developers	1.2.0.20090615-0818	epp.package.cpp
    Eclipse Platform	3.5.0.I20090611-1540	org.eclipse.platform.ide
      Eclipse Platform	3.5.0.v20090611a-9gEeG1HFtQcmRThO4O3aR_fqSMvJR2sJ	org.eclipse.platform.feature.group
  Eclipse Web Developer Tools	3.1.0.v200905242131-7R77FShEVw2xUGpF1LiNxdVAELXy	org.eclipse.wst.web_ui.feature.feature.group
    WST Common UI	3.1.0.v200903021835-7B5FREDhdMNPm7dkmBmpUJxRlMta	org.eclipse.wst.common_ui.feature.feature.group
      WST Common Core	3.1.0.v200903021835-7B77FXTF7RZHITIwQkLs_V	org.eclipse.wst.common_core.feature.feature.group
    WST Server UI	3.1.0.v200901260254-7B3DLAtJZNyxfIUbDVOO4256	org.eclipse.wst.server_ui.feature.feature.group
      WST Server Core	3.1.0.v200901260254-30Et8s733L3E4H	org.eclipse.wst.server_core.feature.feature.group
      WST Server User Documentation	3.1.0.v200903071919-209L7w311A12343145	org.eclipse.wst.server_userdoc.feature.feature.group
    WST Web Core	3.1.0.v200901280206-7H77FD4AT7oFldDfJV4g-6iAAR_z	org.eclipse.wst.web_core.feature.feature.group
      WST Web Services Core	3.1.0.v200905132336-7L7RFTUFGtGcn6glz-kxdBF462A	org.eclipse.wst.ws_core.feature.feature.group
        WSDL 1.5 Feature	1.5.3.v200903071919-2407w311917141519	org.eclipse.wst.ws_wsdl15.feature.feature.group
      WST XML Core	3.1.0.v200901260254-7C7OFPeF7RZHIXHnTz0Jqc0	org.eclipse.wst.xml_core.feature.feature.group
    WST Web Services UI	3.1.0.v200903020650-7I6FPlEtEnGxSBtv6tT6hoOXcS3b	org.eclipse.wst.ws_ui.feature.feature.group
      WST Web Services User Documentation	3.1.0.v200903071919-44FGz9oB55U5L8OAFEK	org.eclipse.wst.ws_userdoc.feature.feature.group
    WST Web User Documentation	3.1.0.v200903071919-31DF8s733J3E4D56BB	org.eclipse.wst.web_userdoc.feature.feature.group
  JavaScript Developer Tools	1.1.1.v200906091427-77-FGBCcNBC-BeMcEeOm	org.eclipse.wst.jsdt.feature.feature.group
  PyDev for Eclipse	1.5.0.1251989166	org.python.pydev.feature.feature.group
  Web Page Editor (Optional)	2.2.0.v20090310-4339oB55W5K6F	org.eclipse.jst.webpageeditor.feature.feature.group

[Updated on: Sat, 05 September 2009 04:32] by Moderator

Re: JavaScript validation errors/warns I cannot solve [message #484693 is a reply to message #484272]

Tue, 08 September 2009 14:32

Eclipse User

Vlada Macek wrote:

> I'm not very strong in JS so I'll appreciate a point to where the code
> is wrong.
>
> "event cannot be resolved"
> Line:
> <body onmousedown="event.preventDefault()"> 
>
> "style cannot be resolved or is not a field"
> Line:
> (<span style="color: blue; cursor: pointer;" onclick="var
> s=document.getElementById('debugQueryTable').style;s.display =s.display=='none'?'':'none';this.innerHTML=this.innerHTML== 'Show'?'Hide':'Show' ">Show</span>)
>
>
> "options cannot be resolved or is not a field"
> Line:
> var o = document.getElementById('id_publisher').options;

The first error, about event being undefined, I'm not sure about.
Where's that defined?

For the last two errors, Document#getElementById() isn't properly
supported yet by the JavaScript validation inside of web pages. The
returned "type" is supposed to vary based on which kind of element
that ID was associated, but we won't have that HTML DOM integration
until WTP 3.2 at the earliest.

--
---
Nitin Dahyabhai
Eclipse WTP Source Editing
IBM Rational

Re: JavaScript validation errors/warns I cannot solve [message #484999 is a reply to message #484693]

Thu, 10 September 2009 04:30

Eclipse User

Thanks for your answer.

>> "event cannot be resolved"
>> Line:
>> <body onmousedown="event.preventDefault()"> 
> The first error, about event being undefined, I'm not sure about.
> Where's that defined?

I don't know where, but it works. I found this trick somewhere and it effectively disabled image dragging in FF, which was problematic feature on touchscreens.

>> "style cannot be resolved or is not a field"
>> "options cannot be resolved or is not a field"
> For the last two errors, Document#getElementById() isn't properly
> supported yet by the JavaScript validation inside of web pages. The
> returned "type" is supposed to vary based on which kind of element
> that ID was associated, but we won't have that HTML DOM integration
> until WTP 3.2 at the earliest.

I suspected that. So I cannot cast the getElementById() result, mask the warnings, anything to wipe them out?

Vlada

Re: JavaScript validation errors/warns I cannot solve [message #485201 is a reply to message #484999]

Thu, 10 September 2009 15:07

Eclipse User

Vlada Macek wrote:
> Thanks for your answer.
>>> "style cannot be resolved or is not a field"
>>> "options cannot be resolved or is not a field"
>> For the last two errors, Document#getElementById() isn't properly
>> supported yet by the JavaScript validation inside of web pages. The
>> returned "type" is supposed to vary based on which kind of element
>> that ID was associated, but we won't have that HTML DOM integration
>> until WTP 3.2 at the earliest.
>
> I suspected that. So I cannot cast the getElementById() result, mask the
> warnings, anything to wipe them out?

Unfortunately, no. It's a real bug/problem in that validator that
we're hoping to address in the next release.

--
---
Nitin Dahyabhai
Eclipse WTP Source Editing
IBM Rational

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