property loadDone : false
property theWebView : missing value

set aURL to "https://www.youtube.com/watch?v=WuziqYptTyE"
set aTitle to getPageTitle(aURL)
–>　　"戦場の絆ポータブル【HD】鉱山都市 オンライン対戦 2015.09.04 – YouTube"

on getPageTitle(aURL)
　　–Check If this script runs in foreground
　　if not (current application’s NSThread’s isMainThread()) as boolean then
　　　　display alert "This script must be run from the main thread (Command-Control-R in Script Editor)." buttons {"Cancel"} as critical
　　　　error number -128
　　end if
　　
　　set my loadDone to false
　　set my theWebView to missing value
　　openURL(aURL)
　　
　　set waitLoop to 1000 * 60 –60 seconds
　　
　　set hitF to false
　　repeat waitLoop times
　　　　if my loadDone = true then
　　　　　　set hitF to true
　　　　　　exit repeat
　　　　end if
　　　　current application’s NSThread’s sleepForTimeInterval:("0.001" as real) –delay 0.001
　　end repeat
　　if hitF = false then return
　　
　　set jsText to "document.title"
　　set x to ((my theWebView)’s stringByEvaluatingJavaScriptFromString:jsText) as text
　　set my theWebView to missing value
　　
　　return x
end getPageTitle

–WebViewにURLを読み込む
on openURL(aURL)
　　set noter1 to current application’s NSNotificationCenter’s defaultCenter()
　　set my theWebView to current application’s WebView’s alloc()’s init()
　　noter1’s addObserver:me selector:"webLoaded:" |name|:(current application’s WebViewProgressFinishedNotification) object:(my theWebView)
　　my (theWebView’s setMainFrameURL:aURL)
end openURL