browser-new-error-stack-output-examples.md

Javascript new Error().stack; output examples

<script>
  let stack = new Error().stack;
  console.log(stack);
</script>

All browsers return a string delimited by a \n. Assuming the file full path is http://localhost/yalog/experiments.html and code in the file is similar to:

function first() {
    second();//line 17
}

function second() {
    const stack = new Error().stack;//line 21
    console.log(stack);
}

first();//line 28

Chrome/Opera returns e.g. this:

Error at second (http://localhost/yalog/experiments.html:21:31) at first (http://localhost/yalog/experiments.html:17:17) at http://localhost/yalog/experiments.html:28:9

Firefox:

second@http://localhost/yalog/experiments.html:21:31 first@http://localhost/yalog/experiments.html:17:17 @http://localhost/yalog/experiments.html:28:13