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/* Scala.js example code
* Public domain
* @author Sébastien Doeraene
*/
package helloworld
import scala.scalajs.js
import js.annotation.JSName
object HelloWorld extends js.JSApp {
def main() {
if (!(!js.Dynamic.global.document) &&
!(!js.Dynamic.global.document.getElementById("playground"))) {
sayHelloFromDOM()
sayHelloFromTypedDOM()
sayHelloFromJQuery()
sayHelloFromTypedJQuery()
} else {
println("Hello world!")
}
}
def sayHelloFromDOM() {
val document = js.Dynamic.global.document
val playground = document.getElementById("playground")
val newP = document.createElement("p")
newP.innerHTML = "Hello world! <i>-- DOM</i>"
playground.appendChild(newP)
}
def sayHelloFromTypedDOM() {
val document = window.document
val playground = document.getElementById("playground")
val newP = document.createElement("p")
newP.innerHTML = "Hello world! <i>-- typed DOM</i>"
playground.appendChild(newP)
}
def sayHelloFromJQuery() {
// val $ is fine too, but not very recommended in Scala code
val jQuery = js.Dynamic.global.jQuery
val newP = jQuery("<p>").html("Hello world! <i>-- jQuery</i>")
newP.appendTo(jQuery("#playground"))
}
def sayHelloFromTypedJQuery() {
val jQuery = helloworld.JQuery
val newP = jQuery("<p>").html("Hello world! <i>-- typed jQuery</i>")
newP.appendTo(jQuery("#playground"))
}
}
object window extends js.GlobalScope {
val document: DOMDocument = js.native
def alert(msg: String): Unit = js.native
}
trait DOMDocument extends js.Object {
def getElementById(id: String): DOMElement = js.native
def createElement(tag: String): DOMElement = js.native
}
trait DOMElement extends js.Object {
var innerHTML: String = js.native
def appendChild(child: DOMElement): Unit = js.native
}
@JSName("jQuery")
object JQuery extends js.Object {
def apply(selector: String): JQuery = js.native
}
trait JQuery extends js.Object {
def text(value: String): JQuery = js.native
def text(): String = js.native
def html(value: String): JQuery = js.native
def html(): String = js.native
def appendTo(parent: JQuery): JQuery = js.native
}
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