How to Detect if the Chrome Console is Open?

Discovering the Open Status of Chrome's Console

Detecting the open state of Firebug has a straightforward approach with the window.console.firebug property. However, extending this method to detect the console in Chrome has proven to be more challenging.

An initial attempt to leverage the window.console.chrome property yielded no results. As a result, it was initially believed that there was no direct method for determining whether the Chrome console was open.

Alternative Approaches

Despite the lack of a direct solution, a workaround was discovered with caveats:

• Debugger: While it may not be completely dependable, utilizing the debugger can still be effective.
• requestAnimationFrame: Muhammad Umer's approach has been successful in detecting both open and close events in Chrome 78.
• function toString: Using an empty function object instead of a regex (/./) still works, as suggested by Overcl9ck.

Code Example:

var devtools = function() {};
devtools.toString = function() {
  if (!this.opened) {
    alert("Opened");
  }
  this.opened = true;
}

console.log('%c', devtools);
// devtools.opened will become true if/when the console is opened

This approach leverages the toString method to toggle a flag (devtools.opened) when the console is opened.

Limitations of Workarounds

It's important to note that these workarounds may have limitations, such as:

• Not working when the console is undocked.
• Not working when the console is open on page load.

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