text: //
  //  UIWebView+JKLoadInfo.h
  //  JKCategories (https://github.com/shaojiankui/JKCategories)
  //
  //  Created by Jakey on 2016/12/9.
  //  Copyright © 2016年 Jakey. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  typedef NS_ENUM(NSUInteger, JKReadyState) {
      JK_JKReadyState_uninitialized = 0, //还未开始载入
      JK_JKReadyState_loading,      //载入中
      JK_JKReadyState_interactive, //已加载，文档与用户可以开始交互
      JK_JKReadyState_complete    //载入完成
  
  };
  typedef void(^jk_webViewLoadChangeBlock)(UIWebView *webView,float progress,CGSize contentSize);
  
  @interface UIWebView (JKLoadInfo)<UIWebViewDelegate>
  @property (nonatomic, readonly) float jk_progress; // 0.0..1.0
  @property (nonatomic, readonly) CGSize jk_contentSize;
  @property (nonatomic, readonly) JKReadyState jk_readyState;
  @property (copy, nonatomic)     jk_webViewLoadChangeBlock jk_webViewLoadChangeBlock;
  
  -(void)setJk_webViewLoadChangeBlock:(jk_webViewLoadChangeBlock)jk_webViewLoadChangeBlock;
  @end
  