try {
throw new Error("Parameter is not a number!");
//throw new Error([message[, fileName[, lineNumber]]])
}
catch(err) {
alert(e.message); // This is an error
} finally { //can just have the finally if you dont want to catch error?
//do something regardless of result
}
Error has name, message and can have custom info/code
could technically throw and catch anything
Custom Errors
export class MediaError extends Error {
//without constructor will include this class in stack trace
constructor(message, user_message, err) {
super(message);
this.name = "MediaError";
this.user_message = user_message;
if (Error.captureStackTrace !== undefined) {
//Firefox problem, since its non-standard
Error.captureStackTrace(this, MediaError);
}
}
}
Common Custom Errors
Axios
err.response
HTTP
Check out http-errors Node package or HTTP Fundamentals
