一、首先想要獲取UIWebView中的URL 的JavaScript程式碼 ：

• (void)webViewDidFinishLoad:(UIWebView *)webView{
  NSString *jsToGetHTMLSource = @”document.getElementsByTagName(‘html’)[0].innerHTML”;

  NSString *HTMLSource = [self.webView stringByEvaluatingJavaScriptFromString:jsToGetHTMLSource];
  NSLog(@”－－－－－－－－－JavaScript原始碼：%@－－－－－－－”,HTMLSource);
  }

二、在新增UIWebView的頁面的viewDidLoad方法中 設定監聽鍵盤的彈出和隱藏，來達到監聽UIWebView中的input 控制元件的輸入值，設定監聽後 實現監聽方法即可。

• (void)viewDidLoad {
  [super viewDidLoad];
  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
  }

三、在需要獲取UIWebView中的輸入框 或其它控制元件的值的地方 使用以下程式碼即可，UIWebVIew的控制元件程式碼如：

• (void)keyboardWillHide:(NSNotification *)notification
  {
  NSString *string = [self.webView stringByEvaluatingJavaScriptFromString:@”document.getElementById(‘input’).value;” ];
  NSLog(@”~~監控的控制元件的值：~~~~:%@”, string);
  }

四、最後不要忘記在頁面要消失的時候移除監聽哦

-(void)resignForKeyboardNotifications
{
[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIKeyboardWillShowNotification
object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIKeyboardDidShowNotification
object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIKeyboardWillHideNotification
object:nil];
}