How to catch all errors in an application if some functions are already wrapped in try ... catch?

Question

JavaScript

What is the correct way to catch application errors in one place if some functions are already wrapped in try catch ?
Interested in both back and front.

Answer 1

There is a `catch` for this, call your function in it. Something like this:
https://jsfiddle.net/g9xwf42h/

function parseError(er) {
    console.log(er);
}


try {
    var a = "test";
    alert(a.b.c);
} catch (er) {
    parseError(er);
}



try {
    var b = "test2";
    alert(b.c.d);
} catch (er) {
    parseError(er);
}

Answer 2

Add a break point to catch (the rest is as usual).