Top "Undefined" questions

PHP: Undefined offset

On some pages, i receive the error: PHP Notice: Undefined offset: 1 in /var/www/example.com/includes/head.php on …

php undefined offset explode notice

undefined reference to `getline' in c

I am learning to use getline in C programming and tried the codes from http://crasseux.com/books/ctutorial/getline.…

c reference undefined getline mingw32

Datatables .row() is undefined

i want to delete rows by simply clicking related Button.. data tables is works, i can use some basic function …

javascript jquery datatables undefined jquery-datatables

Base class undefined

My code below generates the error 'WorldObject': [Base class undefined (translated from german)] Why is this? Here is the code …

c++ class undefined base

What reason is there to use null instead of undefined in JavaScript?

I've been writing JavaScript for quite a long time now, and I have never had a reason to use null. …

javascript null undefined

jasmine unit testing - testing for an undefined property of an object

I have the following statement expect(A.["BAR"].name).toEqual("foo"); which due to the fact my object A has …

javascript unit-testing bdd undefined jasmine

How would you check for undefined property in ejs for node.js?

What is the best way to check for an undefined property in an ejs template? (I'm using the node.js …

javascript node.js undefined ejs

Highcharts.js will not render the chart, it says error "Cannot read property 'series' of undefined"

I think it is because my global var chart hasn't been set yet when my function requestData is called. This …

javascript highcharts undefined global series

react evironment variables .env return undefined

I am building a react app and i need to fetch data from my api, now i want to store …

reactjs undefined

How to check if a variable exists with a value without "undefined local variable or method"?

This is a common pattern: If a variable doesn't exist I get an undefined local variable or method error. The …

ruby-on-rails ruby variables undefined exists