console: countReset() static method

label Optional

A string. If supplied, countReset() resets the count for that label to 0. If omitted, countReset() resets the default counter to 0.

None (undefined).

For example, given code like this:

function greet(user) {
  console.count();
  return `hi ${user}`;
}

greet("bob");
greet("alice");
greet("alice");
console.count();
console.countReset();

Console output will look something like this:

"default: 1"
"default: 2"
"default: 3"
"default: 4"
"default: 0"

Note that the call to console.counterReset() resets the value of the default counter to zero.

If we pass the user variable as the label argument with the string "bob" to the first invocation of console.count(), and the string "alice" to the second:

function greet(user) {
  console.count(user);
  return `hi ${user}`;
}

greet("bob");
greet("alice");
greet("alice");
console.countReset("bob");
console.count("alice");

We will see output like this:

"bob: 1"
"alice: 1"
"alice: 2"
"bob: 0"
"alice: 3"

Resetting the value of the counter "bob" only changes the value of that counter. The value of "alice" is unchanged.

• Microsoft Edge's documentation for console.countReset()
• Node.js documentation for console.countReset()
• Google Chrome's documentation for console.countReset()