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<blockquote data-quote="MayoMayn" data-source="post: 429380" data-attributes="member: 71840">So basically I'm exporting a top level object in Scala.js where the start method takes in a JS object as function argument.After some <a href="https://stackoverflow.com/questions/38891704/javascript-object-as-function-parameter?rq=1" target="_blank">research</a> I discovered that defining a trait for the object would solve the issue, but all I get is still &quot;[Object object]&quot;This is my main.scala file:[PHP]package stormengineimport scala.scalajs.js.annotation._import org.scalajs.domimport scala.scalajs.js@js.nativetrait Config extends js.Object {&nbsp; val host: js.UndefOr[String] = js.native}@JSExportTopLevel(&quot;StormEngine&quot;)object StormEngine {&nbsp; @JSExport&nbsp; def start(config: Config): Unit = {&nbsp; &nbsp; println(config)&nbsp; }}[/PHP]Then from my index.html I call the method:[PHP]&lt;!DOCTYPE html&gt;&lt;html&gt;&lt;head&gt;&nbsp; &nbsp; &lt;title&gt;Example Scala.js application&lt;/title&gt;&nbsp; &nbsp; &lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=UTF-8&quot;/&gt;&nbsp; &nbsp; &lt;script type=&quot;text/javascript&quot; src=&quot;http://localhost:12345/workbench.js&quot;&gt;&lt;/script&gt;&lt;/head&gt;&lt;body style=&quot;margin: 0px&quot;&gt;&lt;div id=&quot;game&quot; /&gt;&lt;script type=&quot;text/javascript&quot; src=&quot;../storm-engine-fastopt.js&quot;&gt;&lt;/script&gt;&lt;script&gt;&nbsp; &nbsp; StormEngine.start({&nbsp; &nbsp; &nbsp; &nbsp; host: '127.0.0.1'&nbsp; &nbsp; });&lt;/script&gt;&lt;/body&gt;&lt;/html&gt;[/PHP]Any clue how to solve this?[doublepost=1519940397,1519940040][/doublepost]My bad it actually did work.You just cant println the JS object and see the object structure, but when I logged &quot;config.host&quot; instead it did show &quot;127.0.0.1&quot;</blockquote>

[QUOTE="MayoMayn, post: 429380, member: 71840"] So basically I'm exporting a top level object in Scala.js where the [B]start[/B] method takes in a JS object as function argument. After some [URL='https://stackoverflow.com/questions/38891704/javascript-object-as-function-parameter?rq=1']research[/URL] I discovered that defining a trait for the object would solve the issue, but all I get is still "[Object object]" This is my [B]main.scala[/B] file: [PHP] package stormengine import scala.scalajs.js.annotation._ import org.scalajs.dom import scala.scalajs.js @js.native trait Config extends js.Object { val host: js.UndefOr[String] = js.native } @JSExportTopLevel("StormEngine") object StormEngine { @JSExport def start(config: Config): Unit = { println(config) } } [/PHP] Then from my [B]index.html[/B] I call the method: [PHP] <!DOCTYPE html> <html> <head> <title>Example Scala.js application</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <script type="text/javascript" src="http://localhost:12345/workbench.js"></script> </head> <body style="margin: 0px"> <div id="game" /> <script type="text/javascript" src="../storm-engine-fastopt.js"></script> <script> StormEngine.start({ host: '127.0.0.1' }); </script> </body> </html> [/PHP] Any clue how to solve this? [doublepost=1519940397,1519940040][/doublepost]My bad it actually did work. You just cant println the JS object and see the object structure, but when I logged "config.host" instead it did show "127.0.0.1" [/QUOTE]

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