1，导入
#import <WebKit/WebKit.h>
2,实现代理
<WKUIDelegate,WKNavigationDelegate,WKScriptMessageHandler>
3,

 WKWebViewConfiguration *config = [[WKWebViewConfiguration alloc]init];
    config.preferences = [[WKPreferences alloc]init];
//        config.preferences.minimumFontSize = 10;
    config.preferences.javaScriptEnabled = YES;
    config.preferences.javaScriptCanOpenWindowsAutomatically = YES;
    config.userContentController = [[WKUserContentController alloc]init];
    config.processPool = [[WKProcessPool alloc]init];
    _wkweb1 = [[WKWebView alloc]initWithFrame:CGRectMake(0, NavHeight, SCREEN_WIDTH, 250) configuration:config];
    _wkweb1.UIDelegate = self;
    _wkweb1.navigationDelegate = self;
    [self.view addSubview:_wkweb1];
    NSString *path = [[NSBundle mainBundle] pathForResource:@"home.html" ofType:nil];
    [_wkweb1 loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:path]]];
    //注册JS协议方法，也就是OC通知JS给这个名字叫GetNo传值操作
    [config.userContentController addScriptMessageHandler:self name:@"GetNo"];

4,实现代理方法

#pragma mark - WKNavigationDelegate
// 页面开始加载时调用
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation{
}
// 当内容开始返回时调用
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation{
}
// 页面加载完成之后调用
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{
     if (webView == self.wkweb1) {
    NSString *str = [self GetJSONStr];
    NSString * jsStr=[NSString stringWithFormat:@"myFun('%@')",str];
    NSLog(@"jsStr==%@",jsStr);
    [self.wkweb1 evaluateJavaScript:jsStr completionHandler:^(id _Nullable result, NSError * _Nullable error) {
//        NSLog(@"HOme：%@==Home：%@",result,error);
    }];
     }
}
#pragma mark - WKScriptMessageHandler
- (void)userContentController:(WKUserContentController *)userContentController
didReceiveScriptMessage:(WKScriptMessage *)message {
    
    NSLog(@"message.name=%@==message.body=%@",message.name,message.body);
    if ([message.name isEqualToString:@"GetNo"]) {
        NSLog(@"message.name=%@==message.body=%@",message.name,message.body);
            [self AFNworing2:message.body];
    }

} 

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