void Operator

2 minutes
Share the link to this page
Copied
  Completed
You need to have access to the item to view this lesson.
One-time Fee
$99.99
List Price:  $139.99
You save:  $40
€95.97
List Price:  €134.37
You save:  €38.39
£79.79
List Price:  £111.71
You save:  £31.92
CA$140.31
List Price:  CA$196.44
You save:  CA$56.13
A$153.75
List Price:  A$215.26
You save:  A$61.51
S$134.64
List Price:  S$188.51
You save:  S$53.86
HK$778.36
List Price:  HK$1,089.74
You save:  HK$311.37
CHF 89.34
List Price:  CHF 125.09
You save:  CHF 35.74
NOK kr1,107.14
List Price:  NOK kr1,550.05
You save:  NOK kr442.90
DKK kr715.75
List Price:  DKK kr1,002.09
You save:  DKK kr286.33
NZ$171.37
List Price:  NZ$239.93
You save:  NZ$68.55
د.إ367.26
List Price:  د.إ514.18
You save:  د.إ146.92
৳11,945.63
List Price:  ৳16,724.36
You save:  ৳4,778.73
₹8,442.99
List Price:  ₹11,820.52
You save:  ₹3,377.53
RM446.75
List Price:  RM625.47
You save:  RM178.72
₦169,271.38
List Price:  ₦236,986.70
You save:  ₦67,715.32
₨27,777.22
List Price:  ₨38,889.22
You save:  ₨11,112
฿3,446.26
List Price:  ฿4,824.91
You save:  ฿1,378.64
₺3,454.90
List Price:  ₺4,837
You save:  ₺1,382.10
B$580.04
List Price:  B$812.08
You save:  B$232.04
R1,815.38
List Price:  R2,541.61
You save:  R726.22
Лв187.66
List Price:  Лв262.73
You save:  Лв75.07
₩140,436.95
List Price:  ₩196,617.35
You save:  ₩56,180.40
₪371.46
List Price:  ₪520.07
You save:  ₪148.60
₱5,893.31
List Price:  ₱8,250.87
You save:  ₱2,357.56
¥15,475.45
List Price:  ¥21,666.25
You save:  ¥6,190.80
MX$2,042.64
List Price:  MX$2,859.78
You save:  MX$817.14
QR364.56
List Price:  QR510.41
You save:  QR145.84
P1,367.06
List Price:  P1,913.94
You save:  P546.88
KSh12,945.58
List Price:  KSh18,124.33
You save:  KSh5,178.75
E£4,964.52
List Price:  E£6,950.52
You save:  E£1,986
ብር12,237.67
List Price:  ብር17,133.23
You save:  ብር4,895.55
Kz91,290.87
List Price:  Kz127,810.87
You save:  Kz36,520
CLP$97,782.75
List Price:  CLP$136,899.76
You save:  CLP$39,117.01
CN¥724.22
List Price:  CN¥1,013.94
You save:  CN¥289.72
RD$6,024.63
List Price:  RD$8,434.73
You save:  RD$2,410.09
DA13,426.15
List Price:  DA18,797.15
You save:  DA5,371
FJ$227.57
List Price:  FJ$318.61
You save:  FJ$91.03
Q771.64
List Price:  Q1,080.33
You save:  Q308.69
GY$20,913.50
List Price:  GY$29,279.73
You save:  GY$8,366.23
ISK kr13,962.80
List Price:  ISK kr19,548.48
You save:  ISK kr5,585.67
DH1,005.63
List Price:  DH1,407.93
You save:  DH402.29
L1,821.98
List Price:  L2,550.85
You save:  L728.86
ден5,904.20
List Price:  ден8,266.12
You save:  ден2,361.91
MOP$801.48
List Price:  MOP$1,122.11
You save:  MOP$320.62
N$1,812.81
List Price:  N$2,538.01
You save:  N$725.20
C$3,678.31
List Price:  C$5,149.78
You save:  C$1,471.47
रु13,500.25
List Price:  रु18,900.90
You save:  रु5,400.64
S/379.05
List Price:  S/530.69
You save:  S/151.63
K402.47
List Price:  K563.48
You save:  K161
SAR375.40
List Price:  SAR525.58
You save:  SAR150.17
ZK2,764.29
List Price:  ZK3,870.12
You save:  ZK1,105.82
L477.77
List Price:  L668.90
You save:  L191.12
Kč2,432.37
List Price:  Kč3,405.42
You save:  Kč973.04
Ft39,496.05
List Price:  Ft55,296.05
You save:  Ft15,800
SEK kr1,103.50
List Price:  SEK kr1,544.95
You save:  SEK kr441.44
ARS$100,363.46
List Price:  ARS$140,512.86
You save:  ARS$40,149.40
Bs690.75
List Price:  Bs967.07
You save:  Bs276.32
COP$438,931.09
List Price:  COP$614,521.09
You save:  COP$175,589.99
₡50,918.63
List Price:  ₡71,288.12
You save:  ₡20,369.49
L2,526.16
List Price:  L3,536.73
You save:  L1,010.56
₲780,388.98
List Price:  ₲1,092,575.79
You save:  ₲312,186.81
$U4,261.82
List Price:  $U5,966.72
You save:  $U1,704.90
zł416.31
List Price:  zł582.85
You save:  zł166.54
Already have an account? Log In

Transcript

Hello in this video I am going to show you the void operator so the void operator you know you attach it to some sort of function and it returns you know undefined my wondering why would you want it to return undefined sometimes you require that result if you want to you know perform some code and you need to have a return of undefined void is the great is the route to go Okay, so let's create a little two Should we do should we do? Yeah, let's just create a quick one on click. Let's say call is void. Void reserved keyword so we can call it void funk. To calculate and call it void and here will be Put, so what you do you do void function, then your function name. So it's void form, open close bracket, curly braces, just one thing because they see like an operator method yet another, that'll be closing brackets and a semicolon here.

You can put it all on one line, but this alone, nothing better like this. So let's see what happens. So for the console dot log, like so. And we do, do you know what, I'm not going to do it on click. I'm not going to do it on click at all. So I'm actually gonna remove that.

I'm going to take this will take you to this fall. And I'm actually going to manually call a functional cell phone gonna say From the console log in to say, hi. So reload says hi where it says uncaught reference error void funk is not defined. So even though void funk is actually defined here, because we put the keywords of Africa rid of that extra little bit missing, oh, there we go. So if you know, you want to be able to run some piece of code, but then you need a response that says undefined. You know, you may need that proof of error checking using some sort of try catch block, then the void operator is the way to go.

That's it for this video. If you have any questions, feel free to pop me a message and I look forward to seeing you in the next video.

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.