send Javascript syntax errors and console.log output to a different location

I'm experimenting with ways to redirect output from the javascript console to my own custom functions.

Here's what I've attempted:


window.console.error = window.console.debug = window.console.log
window.console.log = mylog;

function mylog(msg){
    // Sending it somewhere, just using alert as an example
    alert("log=" + msg);
}
console.log("yo");
var x = y;  // A syntax error

With the above code, I only receive the following alert: "yo"

In the console log, I get: "x is not defined"
How can I capture and redirect syntax errors?

Answer №1

If you encounter syntax errors, you can make use of the onerror function.

window.onerror = function(message, source, lineno, colno, error) {
   alert(message);
}

For more information, check out the official documentation on MDN.

Answer №2

Check out the following discussion for a clever trick on redirecting console.log() output: Capturing javascript console.log?

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