import "ViewController.h"

typedef void(^finished)(NSString *html);

@interface ViewController ()
@property (nonatomic, copy) finished block;

@property (nonatomic, copy) void(^block2)(NSString *html);

@end

@implementation ViewController

-(void)load:(void(^)(NSString *html))finished{

finished(@"第一种用法");
self.block(@"第二种用法");
self.block2(@"第三种用法");

}