The splice() method always returns an Array

JavaScript for Beginners - Arrays: Adding and Removing Elements Part II - Working with the middle of a JavaScript array
0 minutes
Share the link to this page
Copied
  Completed
You need to have access to the item to view this lesson.
One-time Fee
$69.99
List Price:  $99.99
You save:  $30
€64.94
List Price:  €92.78
You save:  €27.83
£55.57
List Price:  £79.40
You save:  £23.82
CA$95.27
List Price:  CA$136.11
You save:  CA$40.83
A$107.88
List Price:  A$154.13
You save:  A$46.24
S$94.55
List Price:  S$135.08
You save:  S$40.52
HK$547.57
List Price:  HK$782.28
You save:  HK$234.71
CHF 63.42
List Price:  CHF 90.61
You save:  CHF 27.18
NOK kr759.63
List Price:  NOK kr1,085.23
You save:  NOK kr325.60
DKK kr484.38
List Price:  DKK kr692.01
You save:  DKK kr207.62
NZ$117.46
List Price:  NZ$167.80
You save:  NZ$50.34
د.إ257.02
List Price:  د.إ367.19
You save:  د.إ110.16
৳7,682.93
List Price:  ৳10,976.08
You save:  ৳3,293.15
₹5,837.41
List Price:  ₹8,339.52
You save:  ₹2,502.10
RM331.26
List Price:  RM473.25
You save:  RM141.99
₦99,285.71
List Price:  ₦141,842.81
You save:  ₦42,557.10
₨19,466.20
List Price:  ₨27,810.04
You save:  ₨8,343.84
฿2,553.28
List Price:  ฿3,647.70
You save:  ฿1,094.41
₺2,262.39
List Price:  ₺3,232.12
You save:  ₺969.73
B$349.43
List Price:  B$499.21
You save:  B$149.77
R1,335.92
List Price:  R1,908.54
You save:  R572.62
Лв126.45
List Price:  Лв180.65
You save:  Лв54.20
₩94,634.34
List Price:  ₩135,197.71
You save:  ₩40,563.37
₪258.03
List Price:  ₪368.63
You save:  ₪110.60
₱3,943.57
List Price:  ₱5,633.91
You save:  ₱1,690.34
¥10,600.67
List Price:  ¥15,144.47
You save:  ¥4,543.79
MX$1,161.53
List Price:  MX$1,659.40
You save:  MX$497.87
QR255
List Price:  QR364.31
You save:  QR109.30
P959.59
List Price:  P1,370.91
You save:  P411.31
KSh9,203.68
List Price:  KSh13,148.68
You save:  KSh3,945
E£3,310.52
List Price:  E£4,729.52
You save:  E£1,419
ብር3,976.27
List Price:  ብር5,680.63
You save:  ብር1,704.36
Kz58,526.41
List Price:  Kz83,612.74
You save:  Kz25,086.33
CLP$68,581.80
List Price:  CLP$97,978.20
You save:  CLP$29,396.40
CN¥506.04
List Price:  CN¥722.95
You save:  CN¥216.90
RD$4,144.87
List Price:  RD$5,921.50
You save:  RD$1,776.62
DA9,443.17
List Price:  DA13,490.83
You save:  DA4,047.65
FJ$158.28
List Price:  FJ$226.12
You save:  FJ$67.84
Q545.87
List Price:  Q779.86
You save:  Q233.98
GY$14,645.83
List Price:  GY$20,923.51
You save:  GY$6,277.68
ISK kr9,762.20
List Price:  ISK kr13,946.60
You save:  ISK kr4,184.40
DH709.20
List Price:  DH1,013.19
You save:  DH303.99
L1,234.28
List Price:  L1,763.34
You save:  L529.05
ден3,991.30
List Price:  ден5,702.11
You save:  ден1,710.80
MOP$564.10
List Price:  MOP$805.89
You save:  MOP$241.79
N$1,325.35
List Price:  N$1,893.44
You save:  N$568.09
C$2,576.69
List Price:  C$3,681.15
You save:  C$1,104.45
रु9,334.54
List Price:  रु13,335.63
You save:  रु4,001.09
S/259.58
List Price:  S/370.84
You save:  S/111.26
K267.89
List Price:  K382.72
You save:  K114.82
SAR262.49
List Price:  SAR375
You save:  SAR112.51
ZK1,765.85
List Price:  ZK2,522.76
You save:  ZK756.90
L322.98
List Price:  L461.43
You save:  L138.44
Kč1,645.46
List Price:  Kč2,350.75
You save:  Kč705.29
Ft25,709.21
List Price:  Ft36,729.02
You save:  Ft11,019.81
SEK kr749.87
List Price:  SEK kr1,071.30
You save:  SEK kr321.42
ARS$60,034.20
List Price:  ARS$85,766.82
You save:  ARS$25,732.62
Bs483.70
List Price:  Bs691.04
You save:  Bs207.33
COP$271,296.95
List Price:  COP$387,583.68
You save:  COP$116,286.73
₡35,581.11
List Price:  ₡50,832.34
You save:  ₡15,251.22
L1,728.07
List Price:  L2,468.78
You save:  L740.71
₲516,441.87
List Price:  ₲737,805.73
You save:  ₲221,363.85
$U2,647.22
List Price:  $U3,781.90
You save:  $U1,134.68
zł280.50
List Price:  zł400.73
You save:  zł120.23
Already have an account? Log In

Transcript

One thing I'd like to point out very quickly is that the splice method always returns an array, regardless of what you pass to it. So for example, I've got this array here called foo with five elements. And if I call the splice method, it returns an empty array. And actually, if we inspect foo, we can say, we can see that it didn't do anything to foo. And that's because we didn't tell it what to do. So in a few seconds, we're going to start providing our the MR displace method, and it's going to start doing things to our array.

And it's going to return an array sometimes with things in it. But the main thing to keep in mind is that the splice method always returns an array. Always sometimes it's empty. Sometimes it has things in it. But that depends on what we pass to displace methods. So just it's an important thing to keep in mind because it can be confusing.

When you call splice and you tell it to remove one element, you think you're going to get that element back, but you don't you get an array with that element box. So the splice method always returns an array.

Sign Up

Share

Share with friends, get 20% off
Invite your friends to LearnDesk learning marketplace. For each purchase they make, you get 20% off (upto $10) on your next purchase.