/Javascript/Node.js/Error handling in node js

Error handling in node js

Node js throw error

FactoryController.prototype.create = function (callback) {
    //The throw is working, and the exception is returned.
    throw new Error('An error occurred'); //outside callback 
    try {
        this.check(function (check_result) {
            callback(check_result);
        });
    } catch (ex) {
        throw new Error(ex.toString());
    }
}

FactoryController.prototype.create = function (callback) {
    try {
        this.check(function (check_result) {
            //The throw is not working on this case to return the exception to the caller(parent)
            throw new Error('An error occurred'); //inside callback 
        });
    } catch (ex) {
        throw new Error(ex.toString());
    }
}

Source: stackoverflow.com

Error handling in node.js

app.use(( err, req, res, next ) => {
  res.locals.error = err;
  if (err.status >= 100 && err.status < 600)
    res.status(err.status);
  else
    res.status(500);
  res.render('error');
});

Error handling in node js

app.get('/', function (req, res, next) {
  Promise.resolve().then(function () {
    throw new Error('BROKEN')
  }).catch(next) // Errors will be passed to Express.
})

Source: expressjs.com

Similar codes

0 vote149 views1 answer
Node path relative
Javascript Node.js
0 vote153 views1 answer
How to manage logging using winston for production and development in node js "github"
Javascript Node.js
2 votes146 views1 answer
Axios node js set user agent
Javascript Node.js
0 vote111 views1 answer
How to remove an element from an array using index in javascript
Javascript Node.js
19 votes157 views2 answers
Node fetch response body
Javascript Node.js
0 vote189 views1 answer
Node express app.listen at specific port & host
Javascript Node.js
0 vote156 views1 answer
Reached heap limit Allocation failed - JavaScript heap out of memory nodejs
Javascript Node.js
0 vote162 views2 answers
Nodejs redirect to url
Javascript Node.js
7 votes143 views2 answers
Declare an array nodejs
Javascript Node.js
0 vote153 views1 answer
Node blank string
Javascript Node.js