- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{    //this is a ‘new window action‘ (aka target="_blank") > open this URL externally. If we´re doing nothing here, WKWebView will also just do nothing. Maybe this will change in a later stage of the iOS 8 Beta    if (!navigationAction.targetFrame) {         NSURL *url = navigationAction.request.URL;        UIApplication *app = [UIApplication sharedApplication];        if ([app canOpenURL:url]) {            [app openURL:url];        }    }    decisionHandler(WKNavigationActionPolicyAllow);}

wkwebview a target="_blank" 打不开链接的解决方案