目录正文常规轮询长轮询正文 长轮询是与服务器保持持久连接的最简单的方式，它不使用任何特定的协议，例如 WebSocket 或者 Server Sent Event。
I used Term::ShellUI and almost every thing is working as expected but the issue is when I pressed Ctrl-C I want to
Hi How to create a CountDown Timer? Is开发者_运维百科 there any good tutorial about it? PHP and JQuery based. thanks.Have a look at jQuery Countdown.
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