Webview获取H5页面js方法参数

#pragma mark UIWebViewDelegate

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
[SVProgressHUD dismissWithDelay:0.1];
JSContext *jsContext = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

jsContext[@"openLink"] =^(id obj,id obj1){

NSInteger attacmentId = 0;
NSString *attacmentType = nil;

NSRange range = [obj rangeOfString:@"link_"];
attacmentId = [[obj substringFromIndex:range.length] integerValue];

NSRange rangeType =  [obj1 rangeOfString:@"." options:NSBackwardsSearch];
attacmentType = [obj1 substringFromIndex:rangeType.location];

InvestInnovationAttacmentViewController *vc = [[InvestInnovationAttacmentViewController alloc]init];

NSString *strUrl = [[MSCoreManager sharedManager]getAttachmetURL:@(attacmentId)];
vc.urlLink = strUrl;
vc.type = attacmentType;
[self.navigationController pushViewController:vc animated:YES];

};

jsContext.exceptionHandler = ^(JSContext *context, JSValue *exceptionValue) {
context.exception = exceptionValue;
//比如把js中的方法名改掉，OC找不到相应方法，这里就会打印异常信息
MSLog(@"异常信息：%@", exceptionValue);
};

}//