操作 DOM
import org.scalajs.dom
import dom.document
def appendP(target: dom.Node, text: String) = {
val pNode = document.createElement("p")
val textNode = document.createTextNode(text)
pNode.appendChild(textNode)
target.appendChild(pNode)
}
import org.scalajs.dom
import dom.document
def appendP(target: dom.Node, text: String) = {
val pNode = document.createElement("p")
val textNode = document.createTextNode(text)
pNode.appendChild(textNode)
target.appendChild(pNode)
}