how to get error stack trace in js
<!DOCTYPE HTML>
<meta charset="UTF-8">
<title>Stack Trace Example</title>
<body>
<script>
function trace() {
try {
throw new Error('myError');
}
catch(e) {
alert(e.stack);
}
}
function b() {
trace();
}
function a() {
b(3, 4, '\n\n', undefined, {});
}
a('first call, firstarg');
</script>