How to get Efficient Support

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=Support Channel=
If you are a ZK customer and your package comes with remote consulting hours, you can contact mailto:support@potix.com to request technical support. Please include your Invoice Number or License Certificate number when you submit your question so that we can associate you with the right company.

If you do not have remote consulting hours or if you are not sure, please read [https://www.zkoss.org/wiki/Customers/FAQ#What_is_my_current_ZK_Package.3F Customer FAQ] or contact us at info@zkoss.org.

= [http://tracker.zkoss.org/ Issue Tracker]=
If you think you encounter a bug,  you can search for the bug in [http://tracker.zkoss.org/ our tracker]. If it's a known bug, there is sometimes a workaround mentioned in the tracker. You can apply the workaround before you get the official release.

=Getting prompt and efficient support from ZK=
When you run into an issue in ZK, following this document can help you to provide the support team with sufficient data, thus speeding up the investigation and get prompt and efficient feedback. Here is a sample screenshot of an error. However, with only a screenshot, it is difficult for us to find enough clues and provide timely support. Instead of providing a screenshot, please follow the tips and instructions below when submitting your issue.

[[File:ZK_MeetRpoblem01.png]]
==Provide Sufficient information ==

Providing sufficient information helps us support you more efficiently.

=== The Sufficient Information Includes: ===
# the complete server-side error or the client-side error if any (read [[#Check JavaScript Error]])
# complete exception stack trace (if any)
# A reproducible sample (please read [[#Tips for creating a reproducible sample]]
# Precise and clear steps to reproduce the issue
# ZK version and edition 
#: e.g. ZK 9.0.1 PE
# Browser and its version
#: e.g. Firefox 60
# If it is hard to create a sample, you can provide an URL so that the support team can access it. When providing this URL, remember to [https://www.zkoss.org/wiki/ZK%20Configuration%20Reference/zk.xml/The%20client-config%20Element/The%20debug-js%20Element  turn on the js debug] in your zk.xml.
# Application servers (e.g. JBoss 6, if it's necessary).
# If your case happens only in your specific environment, it is recommended to request an online meeting or provide a virtual machine as a copy of your actual environment
# anything else that can help us understand your issue better

=== Tips for creating a reproducible sample ===
You can:

# Use [http://zkfiddle.org zkfiddle]
# Zip your maven project with pom.xml and include necessary source code
# Provide zul and its related Java source
# Provide a public URL that we can visit

Steps:
1. Clone the original zul with the issue, remove irrelevant components.
2. Replace your database data with static sample data in order to run without a database.

=== Check JavaScript Error ===
You can check if there is any JavaScript error by opening the developer tool.
For example, press F12 to open the chrome developer tool/ Console tab:

[[File:chrome-js-error.png | center]]

You can extract the error message by:
* select and copy the whole text or 
* right-click, select "Save as..."

==If you cannot provide a reproducible sample==
Then you can choose the following alternatives:

=== Provide a Public URL of Your Web Application===
Provide an URL so that the support team can access it. When providing this URL, remember to turn on the js debug in your zk.xml.

=== Provide ZK AU Request/Response Details ===
# open developer tool before start to reproduce your issue
# do the steps to reproduce your bug
# Send request details as HAR to us
#: * [https://developers.google.com/web/tools/chrome-devtools/network/reference#save-as-har Save all network requests to a HAR file in Chrome]
#: * Save request details as HAR in Firefox [[File:save-har-firefox.png| center]]
#: * [https://docs.microsoft.com/en-us/microsoft-edge/devtools-guide/network Save request details as HAR in Edge]

If your browser doesn't support to save as HAR, or just 1 request is related, you can also send us the screenshot of AU request like:

[[File:au-request.png | center]]

=== Provide Related Source ===
By checking your zul and Java source, we can try to simulate your case. This is better than inferring what you describe in natural language.

= How to Include a JavaScript file = 
When you need to apply a js patch or include a 3rd-party js library, you have to include the js file in your application. This section describes how you can include the js file for different scopes.

== Page-Scope==
* Use the script directive [[ZUML%20Reference/ZUML/Processing%20Instructions/script | <?script?>]]
* Use the script component [[ZK%20Component%20Reference/Essential%20Components/Script | <script>]]

== Application-Scope == 
If you need to include a javascript file on every zul, there are 2 ways:

=== Use language addon===

1. Put a javascript file under ZK classpath web resource path
2. Create a <code>lang-addon.xml</code>  according to [[ZK_Client-side_Reference/Language_Definition#Language_Addon | ZK Client-side Reference/Language Definition#Language_Addon]] and include the javascript file with <code><javascript></code>. For example:

<syntaxhighlight lang='xml' line highlight='4,5'>
<language-addon>
    <addon-name>patch-addon</addon-name><!-- give a meaningful name -->
    <language-name>xul/html</language-name>
    <javascript src="~./mypatch.js" />
    <javascript src="/zkpatch/mypatch2.js"/>
</language-addon>
</syntaxhighlight>

* Line 4: a path starting with <code>~./</code> is a [[ZK_Developer%27s_Reference/UI_Composing/ZUML/Include_a_Page#Classpath_Web_Resource_Path | classpath web resource path]] which is a special folder accessed by ZK
* Line 5: You can also link a file under your web application context root

=== Use [[ZK_Configuration_Reference/zk.xml/The_device-config_Element/The_embed_Element | <embed>]] ===

= How to Run a Sample Maven Project =
In order to narrow down the problem and eliminate differences caused by different environments, we often send you a sample maven project that tries to simulate and reproduce your issue. To run the project, you need to [http://maven.apache.org/download.cgi download maven ] and [http://maven.apache.org/guides/getting-started/maven-in-five-minutes.html setup] first.

# Run your command line interface
# switch to the sample project's root folder that has a <code>pom.xml</code>
# Start jetty server with the command below
#:  <code>mvn jetty:run</code>
# Visit the project's pages with your browser

If you don't know the zul's path or if the path is incorrect, just visit http://localhost:8080. A browser will show a link with the correct context path:
[[File:jettyRoot.png | center | 800px]]

Click the link and it will list folders then you can navigate to find the zul.
[[File:listFolder.png | center]]

= How to get Browser Performance Profile =
If you are running into a performance issue, you can first check out [https://www.zkoss.org/wiki/ZK_Developer's_Reference/Performance_Monitoring/Step_by_Step_Trouble_Shooting Step by Step Trouble Shooting] and do a first step analysis using browser's developer tools.

== [https://developers.google.com/web/tools/chrome-devtools/evaluate-performance By Chrome developer tool] ==
== [https://developer.mozilla.org/en-US/docs/Tools/Performance By Firefox developer tool] ==
== [https://docs.microsoft.com/en-us/microsoft-edge/devtools-guide/performance By Edge developer tool] ==


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