How to use Custom Error Logging Functions In Javascript
We can create custom functions to handle error logging according to the specific requirements. You can use the logging function to print the error.
Syntax:
function logError(error) {
// Custom error logging logic
console.error(error);
}
Example: The below code will explain how to create custom error logging functions in JavaScript.
function logError(errorMsg) {
console.warn("Custom Error:", errorMsg);
}
function product(a, b) {
try {
if (b === 0) {
throw new Error(
"Multiplication with zero with always be zero");
}
return a * b;
} catch (error) {
logError(error.message);
return a * b;
}
}
console.log(product(10, 2));
console.log(product(10, 0));
console.log(product(8, 4));
Output:
20
Custom Error: Multiplication with zero with always be zero
0
32
Error Monitoring and Logging Techniques in JavaScript
Error monitoring and logging techniques in JavaScript are methods used to track, identify, and handle errors that occur within JavaScript code. When a program runs into an error, whether it’s a syntax mistake, a runtime issue, or a logical error, error monitoring tools help to capture and record information about the error.
The below list contains some of the error monitoring and logging techniques available in JavaScript:
Table of Content
- Using try…catch block
- Using the console outputs
- Using Custom Error Logging Functions