-(void)loadView
{
    self.view = [[UIWebView alloc]init];//这样在控制器上只会有一个View
}

- (void)viewDidLoad
{
    [super viewDidLoad];   
//    3、加载网页界面
    UIWebView *webView =(UIWebView *)self.view;
    webView.delegate = self;
//    3.1获取文件的全路径
    NSString *fullPath = [[NSBundle mainBundle]pathForResource:self.helpModel.html ofType:nil];
//    3.2获取URL
    NSURL * url = [[NSURL alloc]initFileURLWithPath:fullPath];
//    3.3获取request
    NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url];
//    3.4加载
    [webView loadRequest:request]; 
}

    // 生成对应的javascript代码
    NSString *jsStr = [NSString stringWithFormat:@"window.location.href = ‘#%@‘;", self.helpModel.tagId];
    [webView stringByEvaluatingJavaScriptFromString:jsStr];