-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
if ([request.mainDocumentURL.relativePath isEqualToString:@"/alert"]) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"本地代码执行" delegate:self cancelButtonTitle:@"确定" otherButtonTitles: nil];
[alert show];
return false; //执行本地代码,返回false不让网页读取网络资源
}
return true; //为yes加载内容,否则不
}