- (void)webViewDidFinishLoad:(UIWebView *)wb

{

//方法1

CGFloat documentWidth = [[wb stringByEvaluatingJavaScriptFromString:@"document.getElementById('content').offsetWidth"] floatValue];

CGFloat documentHeight = [[wb stringByEvaluatingJavaScriptFromString:@"document.getElementById(\"content\").offsetHeight;"] floatValue];

NSLog(@"documentSize = {%f, %f}", documentWidth, documentHeight);

//方法2

CGRect frame = wb.frame;

frame.size.width = ;

frame.size.height = ;

// wb.scrollView.scrollEnabled = NO;

wb.frame = frame;

frame.size.height = wb.scrollView.contentSize.height;

NSLog(@"frame = %@", [NSValue valueWithCGRect:frame]);

wb.frame = frame;

}