HTML DOM console trace() Method

Definition and Usage

console.trace() writes a stack trace to the console. The trace lists the current call and every function that called it, in order, which helps you understand how execution reached a particular line.

Syntax

console.trace()
console.trace(message, obj1, obj2, ...)

You can optionally pass a label and extra values, which are printed above the trace. It returns undefined.

Example

function first() {
  second();
}
function second() {
  third();
}
function third() {
  console.trace("Reached third()");
}

first();
// Console prints:
// Reached third()
//   third
//   second
//   first

Calling first() eventually runs third(), where console.trace prints the full call chain: third was called by second, which was called by first. This makes it easy to see the path the code took.