Skip to content

Instantly share code, notes, and snippets.

@samshull
Created July 18, 2011 02:13
Show Gist options
  • Save samshull/1088402 to your computer and use it in GitHub Desktop.
Save samshull/1088402 to your computer and use it in GitHub Desktop.
Cross Browser javascript stack trace
function printStackTrace() {
var callstack = [];
var isCallstackPopulated = false;
try {
i.dont.exist+=0; //doesn't exist- that's the point
} catch(e) {
if (e.stack) { //Firefox
var lines = e.stack.split('\n');
for (var i=0, len=lines.length; i<len; i++) {
if (lines[i].match(/^\s*[A-Za-z0-9\-_\$]+\(/)) {
callstack.push(lines[i]);
}
}
//Remove call to printStackTrace()
callstack.shift();
isCallstackPopulated = true;
}
else if (window.opera && e.message) { //Opera
var lines = e.message.split('\n');
for (var i=0, len=lines.length; i<len; i++) {
if (lines[i].match(/^\s*[A-Za-z0-9\-_\$]+\(/)) {
var entry = lines[i];
//Append next line also since it has the file info
if (lines[i+1]) {
entry += ' at ' + lines[i+1];
i++;
}
callstack.push(entry);
}
}
//Remove call to printStackTrace()
callstack.shift();
isCallstackPopulated = true;
}
}
if (!isCallstackPopulated) { //IE and Safari
var currentFunction = arguments.callee.caller;
while (currentFunction) {
var fn = currentFunction.toString();
var fname = fn.substring(fn.indexOf("function") + 8, fn.indexOf('')) || 'anonymous';
callstack.push(fname);
currentFunction = currentFunction.caller;
}
}
output(callstack);
}
function output(arr) {
//Optput however you want
alert(arr.join('\n\n'));
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment