ExampleApp/ExampleApp.html

<!doctype html>
<html><head>
	<style type='text/css'>
		html { font-family:Helvetica; color:#222; }
		h1 { color:steelblue; font-size:24px; margin-top:24px; }
		button { margin:0 3px 10px; font-size:12px; }
		.logLine { border-bottom:1px solid #ccc; padding:4px 2px; font-family:courier; font-size:11px; }
	</style>
</head><body>
	<h1>WebViewJavascriptBridge Demo</h1>
	<script>
	window.onerror = function(err) {
		log('window.onerror: ' + err)
	}
	document.addEventListener('WebViewJavascriptBridgeReady', onBridgeReady, false)
	function onBridgeReady(event) {
		var bridge = event.bridge
		var uniqueId = 1
		function log(message, data) {
			var log = document.getElementById('log')
			var el = document.createElement('div')
			el.className = 'logLine'
			el.innerHTML = uniqueId++ + '. ' + message + (data ? ':<br/>' + JSON.stringify(data) : '')
			if (log.children.length) { log.insertBefore(el, log.children[0]) }
			else { log.appendChild(el) }
		}
		bridge.init(function(message, responseCallback) {
			log('JS got a message', message)
			var data = { 'Javascript Responds':'Wee!' }
			log('JS responding with', data)
			responseCallback(data)
		})

		bridge.registerHandler('testJavascriptHandler', function(data, responseCallback) {
			log('ObjC called testJavascriptHandler with', data)
			var responseData = { 'Javascript Says':'Right back atcha!' }
			log('JS responding with', responseData)
			responseCallback(responseData)
		})

		var button = document.getElementById('buttons').appendChild(document.createElement('button'))
		button.innerHTML = 'Send message to ObjC'
		button.ontouchstart = function(e) {
			e.preventDefault()
			var data = 'Hello from JS button'
			log('JS sending message', data)
			bridge.send(data, function(responseData) {
				log('JS got response', responseData)
			})
		}

		document.body.appendChild(document.createElement('br'))

		var callbackButton = document.getElementById('buttons').appendChild(document.createElement('button'))
		callbackButton.innerHTML = 'Fire testObjcCallback'
		callbackButton.ontouchstart = function(e) {
			e.preventDefault()
			log('JS calling handler "testObjcCallback"')
			bridge.callHandler('testObjcCallback', {'foo': 'bar'}, function(response) {
				log('JS got response', response)
			})
		}
	}
	</script>
	<div id='buttons'></div> <div id='log'></div>
</body></html>