Get the wrapping function name in Javascript [duplicate]

Question

How can I get the wrapping function name of my code? I want to implement a runtime-tracking feature in many functions of my project and don't want to replace the function name in every function by myself.

function my_function_name() {
  let t0 = performance.now();
  ....
  DEBUG_TRACK_RUNTIME(performance.now() - t0)
}

function DEBUG_TRACK_RUNTIME(runtime) {
  console.log("PROCESS RUNTIME: " + this.caller, Math.round(runtime, 0) + " ms")
}

Is there a way to get the function name "my_function_name()" as a string?

QUESTION ANSWERED. This solution worked great for me. Thanks

function abcd() {
    let t0 = performance.now();
    ...
    DEBUG_TRACK_RUNTIME(arguments.callee.name, performance.now() - t0)
}

function DEBUG_TRACK_RUNTIME(title, runtime) {
    console.log("PROCESS RUNTIME: " + title + "()", Math.round(runtime, 0) + " ms")
}

Maybe you should not build complex generic reusable features based on arguments.callee. It won't work in strict mode. In modern browsers JS code is always run in strict mode in modules and class declarations. — Teemu
– Teemu, Commented Feb 24, 2021 at 9:23

Scott Marcus · Accepted Answer · 2021-02-23 18:21:02Z

1

Use arguments.calle.name:

function my_function_name() {
  console.log(arguments.callee.name);
}

my_function_name();

answered Feb 23, 2021 at 18:21

Scott Marcus

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2 Comments

Teemu Over a year ago

Won't work in strict mode, though.

gear Over a year ago

Is there a proper way?

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