由于iOS的WkWebview對(duì)window.open方法進(jìn)行了安全限制，即調(diào)用該方法，不會(huì)起到作用。

解放方法：當(dāng)觸發(fā)window.open方法時(shí)，會(huì)觸發(fā)代理WKUIDelegate中的createWebViewWithConfiguration

- (nullable WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures;

然后，我們就可以在這個(gè)方法中進(jìn)行處理了。需要設(shè)置這個(gè)代理 webView.UIDelegate = self;

// 當(dāng)調(diào)用window.open方法時(shí)，會(huì)掉用該代理方法
- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures{
    
    if (navigationAction.request.URL) {
        
        NSURL *url = navigationAction.request.URL;
        NSString *urlPath = url.absoluteString;
        if ([urlPath rangeOfString:@"https://"].location != NSNotFound || [urlPath rangeOfString:@"http://"].location != NSNotFound) {
            
            [[UIApplication sharedApplication] openURL:url];
        }
    }
    
    return nil;
}

參考：http://stackoverflow.com/questions/30603671/open-a-wkwebview-target-blank-link-in-safa