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This article mainly introduces the example analysis of time difference in JavaScript, which is very detailed and has certain reference value. Friends who are interested must finish it!

Time difference

This is a time-based anti-debugging technique borrowed from traditional anti-reverse technology. When a script is executed in a tool environment such as DevTools, it runs very slowly (for a long time), so we can determine whether the script is currently being debugged based on the run time. For example, we can measure the run time between two set points in the code, and then use this value as a reference. If the run time exceeds this value, the script is currently running in the debugger.

The demo code is as follows:

Set Interval (function () {var startTime = performance.now (), check,diff; for (check = 0; check)

{alert ("Debugger detected!");}}, 500). The above is all the content of the article "sample Analysis of time differences in JavaScript". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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