How to debug code when js encounters code problems

This article introduces the debugging method if you encounter problems when writing JavaScript code. I hope it will be helpful to all students learning JavaScript!

How to debug code when js encounters code problems

Single-step tracking debugging debugger;

The console watch function checks the current value of the variable

Enters the function operation

As it continues Click to continue looping, and the value of the specified variable is also changing

Add a breakpoint

Jump in Jump out of the function

throw new Error() actively throws an exception

The following code will no longer run

The code will jump Go to the try statement closest to this sentence

Use

try{
}catch(e){
}

Receive exception

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