How to observe the calls and parameters of specific functions in JavaScript

This article will explain in detail how to observe the calls and parameters of specific functions in JavaScript. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

Observe the calls and parameters of a specific function

In the Chrome console, you can observe specific functions. Each time the function is called, the passed-in parameters are printed.

Var func1 = function (x, y, z) {/ /.... }

Output:

This is a good way to look at the parameters passed in to the function. However, it would be better if the console prompted us for the number of parameters. In the above example, func1 expects three parameters, but only two parameters are passed in. If you don't handle this parameter in your code, you're likely to make an error.

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