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This article mainly introduces the relevant knowledge of "how to set the breakpoint of JavaScript code". The editor shows you the operation process through the actual case. The operation method is simple, fast and practical. I hope this article "how to set the breakpoint of JavaScript code" can help you solve the problem.

In the debug window, you can set a breakpoint for your JavaScript code.

At each breakpoint, the execution of the JavaScript code is stopped so that we can check the value of the JavaScript variable.

After the check, you can re-execute the code (such as the play button).

Debugger keyword

The debugger keyword is used to stop the execution of the JavaScript and call the debug function.

This keyword has the same effect as setting a breakpoint in the debugger.

If debugging is not available, debugger statements will not work.

Turn on debugger, and the code stops execution before the third line.

Example

Varx=15*5

Debugger

Document.getElementbyId ("demo") [xss_clean] = x

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