Nope, it is not possible. Someone can always turn off JavaScript, modify it, run their own JS-code, etc, etc. JavaScript should never ever be used for security reasons.
However, for AJAX-requests you could implement a minimum interval server-side (like on Stack Overflow).
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不，这是不可能的。有人总是可以关闭 JavaScript、修改它、运行自己的 JS 代码等等。出于安全原因，永远不应该使用 JavaScript。
但是，对于 AJAX 请求，您可以在服务器端实现最小间隔（如 Stack Overflow）。
Nope, it is not possible. Someone can always turn off JavaScript, modify it, run their own JS-code, etc, etc. JavaScript should never ever be used for security reasons.
However, for AJAX-requests you could implement a minimum interval server-side (like on Stack Overflow).