Q&A Discussions

Why document.getElementById("validId ") return null even though the document is loaded and the id is valid.

14th Mar 2018, 5:19 PM

Jordan S Reynolds

javascript web

1 Vote

7 Answers

13th Mar 2018, 5:28 PM

josh mizzi

Why does my practice example output null?

getter help java null question setter sololearn

1 Vote

If i write null for place id

3rd Mar 2018, 4:18 PM

Jaren Dogan

insert mysql

0 Votes

document.getElementById returns null

23rd Feb 2018, 6:03 AM

Alexandr

dom html5 javascript sololearn

2 Votes

Why System.out when printed gives it's address and not null ?

19th Feb 2018, 5:11 PM

Niko Harpson

1 Vote

why am i getting a null return with this code at the bottom? You are a + year

15th Feb 2018, 5:33 PM

SDJava

help java null please

0 Votes

7 Answers

9th Feb 2018, 2:10 AM

Todd Caputo

What is the meaning of NULL

meaning null of

0 Votes

26th Jan 2018, 3:23 PM

Justin Dsouza

NULL

c++ue4 unrealengine

0 Votes

why it's showing cannot set textContent = null

20th Jan 2018, 8:27 AM

Davis Kil

error javascript textcontent

0 Votes

18th Jan 2018, 3:31 PM

ANSHIF BABU AS

Why error occurs? (null)

appendchild error javascript js null web

4 Votes

What is the output of this code? a) error. b) 12. c) null

3rd Jan 2018, 6:56 PM

Amadeus

why its not working? it says cannot set elements (innerHTML) of null

3 Votes

9 Answers

30th Dec 2017, 1:36 AM

Gustavo

html js

0 Votes

4th Dec 2017, 7:00 AM

Ashraful Ash

Exactly what is Null?

c#c++java null

5 Votes

Warning: mysqli_query() expects parameter 1 to be mysqli, null given in /storage/emulated/legacy/htdocs/new/login-process.php o

28th Nov 2017, 9:03 AM

Yaseen Akbari

php

1 Vote

11 Answers

28th Nov 2017, 3:37 AM

michael ahianyo

Hello good afternoon. How to declare Boolean data type member as a null in default constructor ?

3 Votes

how change all of null fiulds of the table to zero?

11th Nov 2017, 9:51 AM

raix832

sql

2 Votes

Null in equal method??help

9th Nov 2017, 10:45 AM

Sepehr Jafari

java null

-1 Vote

getElementById in global var returns null

1st Nov 2017, 6:49 PM

oyl

getelementbyid javascript js variables

0 Votes

i am getting bunch (null) printed

28th Oct 2017, 6:13 PM

Chris Q

arrays c c++loop null

0 Votes

Please tell me difference between NIL and NULL..

29th Sep 2017, 6:47 PM

Hridyansh Thakur

nil null

2 Votes

25th Sep 2017, 1:33 PM

Mithun Verma

Tricky null?

javascript null

0 Votes

16th Sep 2017, 2:47 PM

Siroj Samadov

about null

css html java javascript sololearn

0 Votes

What is the use of using null function.... In sql?

28th Aug 2017, 1:39 PM

Jack Fabro

sql where

0 Votes

JavaScript Daily Challenge How? ANYONE?

22nd Aug 2017, 2:22 PM

Selva Raj

how javascript null output undefined

8 Votes

12 Answers

19th Aug 2017, 12:15 AM

¤ rookie ¤

Cannot read property 'addEventListener' of null

css html javascript

0 Votes

If i make multiple null statements in c++, with no reason, does this affects in the execution time for the compiler?

11th Aug 2017, 10:30 AM

Baurzhan Kozhaev

2 Votes

What is null pointer in c++?

9th Aug 2017, 2:14 PM

Çůřîöş ßąšäñț 🇮🇳

0 Votes

How the heck do I get a null

5th Aug 2017, 2:36 AM

Prajakta Dilip Jadhav

help

0 Votes

difference between blank and null???

1st Aug 2017, 9:33 AM

John Andrew Patacsil

blank null php

0 Votes

What is the difference between null and undefined in JavaScript ?

19th Jul 2017, 7:06 AM

dixu

javascript null undefined

2 Votes

CREATE TABLE Users ( id int NOT NULL AUTO_INCREMENT, username varchar(40) NOT NULL, password varchar(10) NOT NULL, PRIMARY

17th Jul 2017, 3:22 AM

kashish

sql tables

3 Votes

6 Answers

14th Jul 2017, 2:24 PM

Ramesh

What is the difference between undefined and null

javascript

3 Votes

in case the input was null for a column NOT NULL..an error will appear or what ?

22nd Jun 2017, 11:13 AM

Da' BO$

sql tables

1 Vote

Información sobre null en PHP

17th Jun 2017, 12:29 AM

De Vinci

if-statements null php

0 Votes

what is Unable to get property 'style' of undefined or null reference error and why am i getting it often

30th May 2017, 10:48 PM

Yunen Andrei Ramos Ramírez

html javascript problem

0 Votes

What is the difference between null and a new empty object?

27th May 2017, 3:51 PM

_Retr0/-

emptyobject js null

3 Votes

how to validate Null Byte Injection in php?

27th May 2017, 4:22 AM

Astghik Saghyan

php security

0 Votes

Why did not earth end on december 12?

21st May 2017, 5:35 PM

Hein Htet

dest earth null void

0 Votes

12 Answers

19th May 2017, 6:54 AM

Code Master

I am getting null pointer while loading audit information,but audit is array

1 Vote

Is there any way to set CORS policy to null when loading images in sololearn? can javascript do it?

18th May 2017, 11:00 AM

Hari k

cors policy programming server sided web

0 Votes

Are there any reason why using NULL in pointer ? Why not 0?

16th May 2017, 7:46 PM

Miłosz Szatkowski

2 Votes

5 Answers

14th May 2017, 2:57 AM

Setiawan Next

Is null and 0 are equal

sololearn

2 Votes

Is null and 0 equal in java??

13th May 2017, 4:47 PM

Harish

0 Votes

6th May 2017, 8:00 AM

Vishnuvasan

NULL pointer

c++null pointers

1 Vote

Are null and zaro are the same in C++

3rd May 2017, 2:04 AM

Hunt Guo

What is the difference between NULL and zero ??

2 Votes

5 Answers

1st May 2017, 10:58 PM

Farina Zzz

different null values zero

9 Votes

6 Answers

28th Apr 2017, 11:25 AM

P∆WAN M∆URY∆

Are NULL and zero that same thing in C++?

c++if-statements

26 Votes

39 Answers

27th Apr 2017, 12:19 AM

Shaun

What is java null pointer exception?

java objects pointers

4 Votes