Question

如果cookie不存在，我试图显示一个div，当设置cookie时，我不希望div再显示（将隐藏在CSS中）

但我不能让div显示它什么时候没有饼干，有人知道我做错了吗？

import java.awt.Desktop;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URI;

public final class Router {

    private static final String DEFAULT_GATEWAY = "Default Gateway";

    private Router() {
    }

    public static void main(String[] args) {
        if (Desktop.isDesktopSupported()) {
            try {
                Process process = Runtime.getRuntime().exec("ipconfig");

                try (BufferedReader bufferedReader = new BufferedReader(
                        new InputStreamReader(process.getInputStream()))) {

                    String line;
                    while ((line = bufferedReader.readLine()) != null) {
                        if (line.trim().startsWith(DEFAULT_GATEWAY)) {
                            String ipAddress = line.substring(line.indexOf(":") + 1).trim(),
                                    routerURL = String.format("http://%s", ipAddress);

                            // opening router setup in browser
                            Desktop.getDesktop().browse(new URI(routerURL));
                        }

                        System.out.println(line);
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

https://jsfiddle.net/wqsc5hty/

Answer 1

if (document.cookie.indexOf("mycookie") == 0) {
    return false; // cookie is not set
}else{
    return true; // cookie is set
}

Javascript cookie - 检查cookie是否存在

1 个答案: