- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  //开始初始化引擎
  [JPEngine startEngine];
  //读取js文件
  NSString *sourcePath = [[NSBundle mainBundle] pathForResource:@"demo" ofType:@"js"];
  NSString *script = [NSString stringWithContentsOfFile:sourcePath encoding:NSUTF8StringEncoding error:nil];
  //运行js文件
  [JPEngine evaluateScript:script];
  self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
  self.window.rootViewController = [[ViewController alloc]init];
  [self.window addSubview:[self genView]];
  [self.window makeKeyAndVisible];
  return YES;
}

- (UIView *)genView
{
  UIView * view= [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 320)];
  view.backgroundColor = [UIColor redColor];
  return view;
}

 require('UIView, UIColor, UILabel')
  //要替换函数的类
  defineClass('AppDelegate', {
      //替换函数
        //要替换函数的名称
        genView: function() {
          var view = self.ORIGgenView();
          view.setBackgroundColor(UIColor.greenColor())
          var label = UILabel.alloc().initWithFrame(view.frame());
          label.setText("JSPatch");
          label.setTextAlignment(1);
          view.addSubview(label);
          return view;
      }
  });

- (void)viewDidLoad {
  [super viewDidLoad];
  // ‘\'符用于进行换行
  [JPEngine evaluateScript:@"\
   var alertView = require('UIAlertView').alloc().init();\
   alertView.setTitle('Alert');\
   alertView.setMessage('AlertView from js'); \
   alertView.addButtonWithTitle('OK');\
   alertView.show(); \
   "];
}

- (void)viewDidLoad {
  [super viewDidLoad];
  self.view.backgroundColor = [UIColor whiteColor];
  [JPEngine startEngine];
  NSString *sourcePath = [[NSBundle mainBundle] pathForResource:@"demo" ofType:@"js"];
  NSString *script = [NSString stringWithContentsOfFile:sourcePath encoding:NSUTF8StringEncoding error:nil];
  [JPEngine evaluateScript:script];
  [self performSelectorOnMainThread:@selector(creatView) withObject:nil waitUntilDone:nil];
}

 require('UIView, UIColor, UILabel')
  defineClass('ViewController', {
      // replace the -genView method
        creatView: function() {
          var view = UIView.alloc().initWithFrame({x:20, y:20, width:100, height:100});
          view.setBackgroundColor(UIColor.greenColor());
          var label = UILabel.alloc().initWithFrame({x:0, y:0, width:100, height:100});
          label.setText("JSPatch");
          label.setTextAlignment(1);
          view.addSubview(label);
        self.view().addSubview(view)
      }
  });

require('UIView')

require('UIView, UIColor, UILabel')

require('UIView').alloc().init()

UIColor.redColor()

view.addSubview(label)

label.setText("JSPatch")

/*
classDeclaration:要添加或者重写方法的类名 字符串 如果此类不存在 则会创建新的类
instanceMethods:要添加或者重写的实例方法 {}
classMethods:要添加或者重写的类方法 {}
*/
defineClass(classDeclaration, instanceMethods, classMethods)

defineClass('ViewController', {
      // replace the -genView method
        newFunc: function() {
          //编写实例方法
          self.view().setBackgroundColor(UIColor.redColor())
        }
  
      },{

        myLoad:function(){
          //编写类方法
        }

      }
      )

defineClass('ViewController', {
      // replace the -genView method
        viewDidLoad: function() {
          //编写实例方法
          self.ORIGviewDidLoad()
        }
  
      }
      )

defineClass('ViewController', {
      // replace the -genView method
        viewDidLoad: function() {
          //编写实例方法
          self.super().viewDidLoad()
        }
  
      }
      )

defineClass('ViewController', {
      // replace the -genView method
        viewDidLoad: function() {
          //编写实例方法
          self.super().viewDidLoad()
          self.setProp_forKey("JSPatch", "data")
        },
        touchesBegan_withEvent(id,touch){
          self.getProp("data")
          self.view().setBackgroundColor(UIColor.redColor())
        }
  
      }
      )

defineClass("ViewController2: UIViewController <UIAlertViewDelegate>", {
      viewDidAppear: function(animated) {
      var alertView = require('UIAlertView')
      .alloc()
      .initWithTitle_message_delegate_cancelButtonTitle_otherButtonTitles(
                                        "Alert",
                                        "content",
                                        self,
                                        "OK",
                                        null
                                        )
      alertView.show()
      },
      alertView_clickedButtonAtIndex:function(alertView, buttonIndex) {
      console.log('clicked index ' + buttonIndex)
      }
      })

  var view = require('UIView').alloc().init()
  view.setFrame({x:100,y:100,width:100,height:100})

view.setCenter({x:200,y:200})

  var size = {width:200,height:200}
  view.setFrame({x:100,y:100,width:size.width,height:size.height})

  var range = {location: 0, length: 1}

self.performSelector_withObject("func:", 1)

typedef void(^block)(NSString * str);
@interface ViewController ()
@end
@implementation ViewController
-(block)getBlock{
  block block = ^(NSString * str){NSLog(@"%@",str);};
  return block;
}
@end

defineClass("ViewController", {
      viewDidAppear: function(animated) {
       var func = self.getBlock()
        func("123")
      }
      })

@interface ViewController ()
@end
@implementation ViewController

-(void)run:(void(^)(NSString * str))block{
  block(@"123");
}
@end

defineClass("ViewController", {
      viewDidAppear: function(animated) {
      //run 方法中需要传入一个block
      self.run(block("NSString*",function(str){console.log(str)}))
      }
      })

defineClass("ViewController", {
      viewDidAppear: function(animated) {
      //run 方法中需要传入一个block
      var slf = self
      self.run(block("NSString*",
              function(str){
              console.log(str)
              slf.log(str)
              }))
      }
      })

 var slf = __weak(self)
 var stgSef = __strong(self)

//阻塞当前线程一定时间
dispatch_after(1.0, function(){ 
})
//为主线程添加异步任务
dispatch_async_main(function(){ 
})
//为主线程添加同步任务
dispatch_sync_main(function(){ 
})
//向全局队列中添加任务
dispatch_async_global_queue(function(){ 
})
JSPatch中不可以直接使用Objective-C中定义的枚举，但是可以用其枚举的真实值进行传递。例如：

//UIControlEventTouchUpInside的值是1<<6
btn.addTarget_action_forControlEvents(self, "handleBtn", 1<<6);