Add readme and examples

README.md

@@ -0,0 +1,61 @@
+go-dom
+------
+
+**This package is a work in progress**
+
+The `go-dom` package exposes the [Web API Spec](https://spec.whatwg.org/) as a Go package.
+
+This package is mostly just wrappers around calls to [syscall/js](https://tip.golang.org/pkg/syscall/js/)
+to expose the browser Web API in a Go friendly manner.
+
+This package's code is generated from [WebIDL](https://heycam.github.io/webidl/) definitions for the various Web API Specs.
+
+## Examples
+
+These examples can be compiled and run using `GOARCH=wasm GOOS=js` as described at https://github.com/golang/go/wiki/WebAssembly
+
+Find all `div` elements and print them to the console
+
+```go
+package main
+
+import (
+    "github.com/brettlangdon/go-dom/console"
+    "github.com/brettlangdon/go-dom/document"
+)
+
+func main() {
+    nodes := document.QuerySelectorAll("div")
+    for i := 0; i < nodes.GetLength(); i++ {
+        console.Dir(nodes.Item(0))
+    }
+}
+```
+
+Add a `click` handler to `document** which prints the event information.
+
+```go
+package main
+
+import (
+    dom "github.com/brettlangdon/go-dom"
+    "github.com/brettlangdon/go-dom/console"
+    "github.com/brettlangdon/go-dom/document"
+)
+
+func main() {
+    loop := dom.NewLoop()
+
+    document.AddEventListener("click", dom.NewEventHandler(func(evt dom.Event) {
+        console.Dir(evt)
+    }))
+
+    loop.Loop()
+}
+```
+
+This last example uses a `dom.Loop` which is used to keep the program running instead of exiting.
+
+If the Go program exits then the callback handlers will no longer execute.
+
+Calling `loop.Stop()` will cause the Go program to exit.

example/eventhandler/main.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	dom "github.com/brettlangdon/go-dom"
+	"github.com/brettlangdon/go-dom/console"
+	"github.com/brettlangdon/go-dom/document"
+)
+
+func main() {
+	loop := dom.NewLoop()
+
+	document.AddEventListener("click", dom.NewEventHandler(func(evt dom.Event) {
+		console.Dir(evt)
+	}))
+
+	loop.Loop()
+}

example/simple/main.go

@@ -3,15 +3,11 @@ package main
 import (
 	"github.com/brettlangdon/go-dom/console"
 	"github.com/brettlangdon/go-dom/document"
-	"github.com/brettlangdon/go-dom/window"
 )
 
 func main() {
-	loc := window.GetLocation()
-	console.Dir(loc)
-
 	nodes := document.QuerySelectorAll("div")
 	for i := 0; i < nodes.GetLength(); i++ {
-		console.Dir(nodes.Item(i))
+		console.Dir(nodes.Item(0))
 	}
 }