console.countReset

Resets the counter. This function takes an optional argument label.

If label is supplied, this function resets the count associated with that particular label.

If label is omitted, the function resets the default counter.

Syntax

console.countReset([label]);

Parameters

label

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

Return value

If a label parameter was supplied:

 counter-name: 0

If no label was supplied:

default: 0

Exceptions

If label is supplied and does not exist, countReset returns the warning:

Counter "counter-name" doesn’t exist.

If label is not supplied and count() has not been callsed, countReset returns the warning:

Counter "default" doesn’t exist.

Examples

For example, given code like this:

var user = "";

function greet() {
  console.count();
  return "hi " + user;
}

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

Console output will look something like this:

"default: 1"
"default: 2"
"default: 3"
"default: 1"
"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 to the first invocation of count(), and the string "alice" to the second:

var user = "";

function greet() {
  console.count(user);
  return "hi " + user;
}

user = "bob";
greet();
user = "alice";
greet();
greet();
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.

Specifications

Browser compatibilityUpdate compatibility data on GitHub