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https://issues.apache.org/jira/browse/CB-13092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16107039#comment-16107039
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Dawid commented on CB-13092:
----------------------------

you are right. When calling it from the deviceready function it works like a 
charm. Reading and understanding the documentation, although it is a pain 
sometimes, is the way to go. Thank you for your help.

Do I have to call all the code from inside the device ready function or is 
there a way to make sure that the deviceready event fired for sure before going 
on? 
I had code below the deviceready function and the listener and assumed that the 
code below the function wouldn't be executed before the event went through, but 
obviously I was wrong. 

> Plugin addition fails | Uncaught TypeError: undefined is not a function
> -----------------------------------------------------------------------
>
>                 Key: CB-13092
>                 URL: https://issues.apache.org/jira/browse/CB-13092
>             Project: Apache Cordova
>          Issue Type: Bug
>          Components: AllPlugins
>    Affects Versions: 7.0.1
>         Environment: Windows 8 64 bit Enterprise 
> Android Studio 2.3.3
> {code:java}
> $ cordova -v
> You have been opted out of telemetry. To change this, run: cordova telemetry 
> on.
> 7.0.1
> $ npm --version
> 3.10.10
> $ git --version
> git version 2.13.2.windows.1
> $ grunt --version
> grunt-cli v1.2.0
> $ bower --version
> 1.8.0
> {code}
>            Reporter: Dawid
>            Priority: Minor
>
> Hey guys, 
> For a few days now, I am trying to add a plugin myself based on the 
> documentation on the cordova homepage. 
> [https://cordova.apache.org/docs/en/latest/guide/hybrid/plugins/index.html]
> I started with the German version (because I am from Germany) and was 
> disappointed. It is written terribly. Just the quality of the text itself is 
> bad. I didn't go far enough to evaluate the content.
> I switched to the English version which is good, and I think I followed every 
> step and have everything set up as it should be, but when I try to run my 
> project (or a blank project for that matter) with the plugin added, I get the 
> following error: 
> {code:java}
> 07-24 03:51:15.036 29983-29983/? D/CordovaWebViewImpl: 
> onPageDidNavigate(file:///android_asset/www/index.html)
> 07-24 03:51:15.247 29983-29983/io.cordova.hellocordova D/JsMessageQueue: Set 
> native->JS mode to EvalBridgeMode
> 07-24 03:51:15.286 29983-29983/io.cordova.hellocordova 
> D/SystemWebChromeClient: 
> file:///android_asset/www/plugins/cordova-plugin-echo-js/www/echo.js: Line 28 
> : Uncaught TypeError: undefined is not a function
> 07-24 03:51:15.286 29983-29983/io.cordova.hellocordova I/chromium: 
> [INFO:CONSOLE(28)] "Uncaught TypeError: undefined is not a function", source: 
> file:///android_asset/www/plugins/cordova-plugin-echo-js/www/echo.js (28)
> 07-24 03:51:15.290 29983-29983/io.cordova.hellocordova D/CordovaWebViewImpl: 
> onPageFinished(file:///android_asset/www/index.html)
> 07-24 03:51:15.384 29983-29983/io.cordova.hellocordova 
> D/SystemWebChromeClient: file:///android_asset/www/js/index.js: Line 36 : 
> Uncaught TypeError: Cannot read property 'querySelector' of null
> 07-24 03:51:15.384 29983-29983/io.cordova.hellocordova I/chromium: 
> [INFO:CONSOLE(36)] "Uncaught TypeError: Cannot read property 'querySelector' 
> of null", source: file:///android_asset/www/js/index.js (36)
> {code}
> line 28 is the first line from following code: 
> {code:java}
>                       window.echo("echome", function(echoValue){
>                               alert(echoValue == "echome");
>                       });
> {code}
> I googled a bit of course and tried various "solutions". Removing the 
> plugins, removing the platforms adding them back up. Starting a project from 
> scratch. Adding the plugins in different ways and other stuff that I am 
> missing now for sure. 
> I appreciate any kind of help. This problem is really annoying me. 
> Best regards
> Dawid



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