I want to display script errors in a popup alert instead of showing them in the browser console.
window.onerror = function() {
var message = /* get error messages and put them here */;
alert(message);
return true;
};
3 Answers
Yes, that is the correct way.
See the reference here:
http://www.javascriptkit.com/javatutors/error2.shtml
And explanation of how to see more details of the error here:
http://www.javascriptkit.com/javatutors/error3.shtml
Their example:
window.onerror = function(msg, url, linenumber) {
alert('Error message: '+msg+'\nURL: '+url+'\nLine Number: '+linenumber);
return true;
}
If you wish to display a LIST of errors in a single pop-up, it's trickier.
Since the errors occue 1 by 1, you need to do the following:
- have
window.onerrorhandler store error details in some array Check that array periodically - either via a timer, or on every N'th call of
window.onerrorhandler, or both.When the check happens, process entire array, display contents as desired, and empty out an array
1 Comment
powerboy
Thx! So the answer is: window.onerror = function(message) { alert(message); return true; }; Just tested!
Just in case someone would like to use it with jQuery:
$(window).on("error", function(evt) {
console.log("jQuery error event:", evt);
var e = evt.originalEvent; // get the javascript event
console.log("original event:", e);
if (e.message) {
alert("Error:\n\t" + e.message + "\nLine:\n\t" + e.lineno + "\nFile:\n\t" + e.filename);
} else {
alert("Error:\n\t" + e.type + "\nElement:\n\t" + (e.srcElement || e.target));
}
});
Comments
Check this out: http://www.javascriptkit.com/javatutors/error3.shtml. Looks like signature is function(message, url, linenumber).
1 Comment
Pang
Link in answer is outdated - "domain has expired".
onerrorevent is only supported by IE and Mozilla.