![fun main(args: Array<String>) {
println("Hello JavaScript!")
}
var ConsoleOutput = function (Kotlin) {
'use strict';
var _ = Kotlin.defineRootPackage(null, {
main_kand9s$: function (args) {
Kotlin.println('Hello JavaScript!');
}
});
Kotlin.defineModule('ConsoleOutput', _);
_.main_kand9s$([]);
return _;
}(kotlin);
transpile](https://image.slidesharecdn.com/kotlinwonderland-170830100218/85/Kotlin-wonderland-7-320.jpg)
Kotlin wonderland
- 1. Christopher Ng Kotlinian @ Editor @ blacklenspub.com Kotlin Wonderland
- 2. We love JVM
- 4. Let’s say goodbye to JVM
- 7. fun main(args: Array<String>) { println("Hello JavaScript!") } var ConsoleOutput = function (Kotlin) { 'use strict'; var _ = Kotlin.defineRootPackage(null, { main_kand9s$: function (args) { Kotlin.println('Hello JavaScript!'); } }); Kotlin.defineModule('ConsoleOutput', _); _.main_kand9s$([]); return _; }(kotlin); transpile
- 8. group 'com.babedev' version '1.0-SNAPSHOT' buildscript { ext.kotlin_version = '1.1.4' repositories { mavenCentral() } dependencies { classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" } } apply plugin: 'kotlin2js' repositories { mavenCentral() } dependencies { compile "org.jetbrains.kotlin:kotlin-stdlib-js:$kotlin_version" }
- 9. compileKotlin2Js { kotlinOptions.outputFile = "${projectDir}/web/output.js" kotlinOptions.moduleKind = "commonjs" }
- 10. build.doLast { configurations.compile.each { File file -> copy { includeEmptyDirs = false from zipTree(file.absolutePath) into "${projectDir}/web" include { fileTreeElement -> def path = fileTreeElement.path path.endsWith(".js") && (path.startsWith("META-INF/resources/") || !path.startsWith("META-INF/")) } } } }
- 11. JS Stdlib - org.w3c.dom - org.w3c.fetch - org.w3c.xhr - org.w3c.files - org.w3c.notifications - kotlin.js
- 12. org.w3c.dom // Kotlin val img = document.createElement("img") img.setAttribute("src", "https://kotlinlang.org/assets/images/open-graph/kotlin_250x250.png") val div = document.getElementById("app") div?.appendChild(img) // Javascript var img = document.createElement("img"); img.setAttribute("src", "https://kotlinlang.org/assets/images/open-graph/kotlin_250x250.png"); var div = document.getElementById("app"); div != null ? div.appendChild(img) : null;
- 13. org.w3c.fetch window.fetch("https://httpbin.org/ip") .then({ response -> response.json().then({ body -> console.log(body) }) }) .catch({ error -> console.error(error.message) })
- 14. Dynamic Type val database = js("firebase.database()")!! database.ref("/messages") .on("value") { snapshot: dynamic -> snapshot.forEach(fun (child: dynamic) { console.log(child.`val()`) }) }
- 15. External // Javascript function greet(msg) { console.log(msg) } // Kotlin external fun greet(msg: Any?): Unit greet("Hello Kotlin")
- 18. Kotlin Native
- 19. Non-JVM Targets - Embedded systems / IoT - iOS - Windows - Web Assembly
- 21. http://hadihariri.com/2017/05/28/raspberry-pi-starter-kit-and-kotlin-native/ import pigpio.* fun main(args: Array<String>) { const val port = 21 if (gpioInitialise() < 0) { println("Error initialising") } else { if (gpioSetMode(port, PI_OUTPUT) < 0) { println("Could not set mode for GPIO$port") } else { if (gpioWrite(port, 1) < 0) { println("Could not write to GPIO$port") } } } }
- 22. http://justmaku.org/2017-06-07-kotlin-on-ios Kotlin Native C++ Wrapper Objective-C Bridging Header Swift
- 25. Christopher Ng Kotlinian @ Editor @ blacklenspub.com "Thank you".repeat(infinity)