找到要取出内容方法:

浏览器设置 -> 更多工具 -> 开发者工具 -> 手机模式(左下角 手机按钮)点击手机图标左边那个搜索框 -> 然后点击你要隐藏的控件选择到你要选择到的控件 -> 然后左下角代码就被选中了.其中右下角中是这个控件对应的css代码,在其中添加一行display:none,这时这个选中的控件就被隐藏起来了.但是我们主要通过javascript去操作这个控件

最后代码如下:

////  MainViewController.m//  webview////  Created by ??? on 15/11/24.//  Copyright © 2015年 ???. All rights reserved.//#import "MainViewController.h"@interface MainViewController ()
    
     @property (nonatomic,strong)UIWebView *webView;@end@implementation MainViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view.    [self webView];}- (UIWebView *)webView{    if (!_webView) {        NSString *urlStr = @"http://group.haodou.com/topic-327282.html";                self.webView = [[UIWebView alloc] initWithFrame:self.view.bounds];        self.webView.delegate = self;        self.webView.backgroundColor = [UIColor redColor];        [self.view addSubview:_webView];                NSURL *url=[NSURL URLWithString:urlStr];        NSURLRequest *request=[[NSURLRequest alloc] initWithURL:url];        [self.webView loadRequest:request];    }    return _webView;}- (void)webViewDidFinishLoad:(UIWebView *)webView{    [webView stringByEvaluatingJavaScriptFromString:@"document.getElementsByClassName('main_mu_bar')[0].style.display = 'NONE'"];}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}/*#pragma mark - Navigation// In a storyboard-based application, you will often want to do a little preparation before navigation- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {    // Get the new view controller using [segue destinationViewController].    // Pass the selected object to the new view controller.}*/@end