Why does alert(0.-5) print -5?
Suppose I write 0.5 as 0.-5 in unexpected way, but it can still run, my question is , what does "0." in "0.-5" do so that it can still run and prints -5?
I also tried alert(0.-5+1) , which prints -4, does javascript ignores "0." in "0.-5"?
javascript numbers
edited 28 mins ago
Charlie H
9,03342550
asked 2 hours ago
mmmaaammmaaa
2,2231311
add a comment |
Suppose I write 0.5 as 0.-5 in unexpected way, but it can still run, my question is , what does "0." in "0.-5" do so that it can still run and prints -5?
I also tried alert(0.-5+1) , which prints -4, does javascript ignores "0." in "0.-5"?
javascript numbers
edited 28 mins ago
Charlie H
9,03342550
asked 2 hours ago
mmmaaammmaaa
2,2231311
2
0.is like0.0. Or just0.
– Ry-♦
2 hours ago
add a comment |
Suppose I write 0.5 as 0.-5 in unexpected way, but it can still run, my question is , what does "0." in "0.-5" do so that it can still run and prints -5?
I also tried alert(0.-5+1) , which prints -4, does javascript ignores "0." in "0.-5"?
javascript numbers
edited 28 mins ago
Charlie H
9,03342550
asked 2 hours ago
mmmaaammmaaa
2,2231311
Suppose I write 0.5 as 0.-5 in unexpected way, but it can still run, my question is , what does "0." in "0.-5" do so that it can still run and prints -5?
I also tried alert(0.-5+1) , which prints -4, does javascript ignores "0." in "0.-5"?
javascript numbers
javascript numbers
edited 28 mins ago
Charlie H
9,03342550
asked 2 hours ago
mmmaaammmaaa
2,2231311
edited 28 mins ago
Charlie H
9,03342550
asked 2 hours ago
mmmaaammmaaa
2,2231311
edited 28 mins ago
Charlie H
9,03342550
edited 28 mins ago
Charlie H
9,03342550
edited 28 mins ago
Charlie H
9,03342550
9,03342550
asked 2 hours ago
mmmaaammmaaa
2,2231311
asked 2 hours ago
mmmaaammmaaa
2,2231311
asked 2 hours ago
mmmaaammmaaa
2,2231311
2,2231311
2
0.is like0.0. Or just0.
– Ry-♦
2 hours ago
add a comment |
2
0.is like0.0. Or just0.
– Ry-♦
2 hours ago
2
2
0. is like 0.0. Or just 0.– Ry-♦
2 hours ago
0. is like 0.0. Or just 0.– Ry-♦
2 hours ago
add a comment |
2 Answers
2
active
oldest
votes
Trailing digits after a . are optional:
console.log(0. === 0);So
0.-5
evalutes to
0 - 5
which is just -5. Similarly,
0.-5+1
is
0 - 5 + 1
which is
-5 + 1
or -4.
answered 2 hours ago
CertainPerformanceCertainPerformance
88.8k154876
add a comment |
In JS you can express a number with optional decimal point.
x = 5.; //5
x = 5. + 6. //11
answered 1 hour ago
Charlie HCharlie H
9,03342550
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Trailing digits after a . are optional:
console.log(0. === 0);So
0.-5
evalutes to
0 - 5
which is just -5. Similarly,
0.-5+1
is
0 - 5 + 1
which is
-5 + 1
or -4.
answered 2 hours ago
CertainPerformanceCertainPerformance
88.8k154876
add a comment |
Trailing digits after a . are optional:
console.log(0. === 0);So
0.-5
evalutes to
0 - 5
which is just -5. Similarly,
0.-5+1
is
0 - 5 + 1
which is
-5 + 1
or -4.
answered 2 hours ago
CertainPerformanceCertainPerformance
88.8k154876
add a comment |
Trailing digits after a . are optional:
console.log(0. === 0);So
0.-5
evalutes to
0 - 5
which is just -5. Similarly,
0.-5+1
is
0 - 5 + 1
which is
-5 + 1
or -4.
answered 2 hours ago
CertainPerformanceCertainPerformance
88.8k154876
Trailing digits after a . are optional:
console.log(0. === 0);So
0.-5
evalutes to
0 - 5
which is just -5. Similarly,
0.-5+1
is
0 - 5 + 1
which is
-5 + 1
or -4.
console.log(0. === 0);console.log(0. === 0);answered 2 hours ago
CertainPerformanceCertainPerformance
88.8k154876
answered 2 hours ago
CertainPerformanceCertainPerformance
88.8k154876
answered 2 hours ago
CertainPerformanceCertainPerformance
88.8k154876
answered 2 hours ago
CertainPerformanceCertainPerformance
88.8k154876
88.8k154876
add a comment |
add a comment |
In JS you can express a number with optional decimal point.
x = 5.; //5
x = 5. + 6. //11
answered 1 hour ago
Charlie HCharlie H
9,03342550
add a comment |
In JS you can express a number with optional decimal point.
x = 5.; //5
x = 5. + 6. //11
answered 1 hour ago
Charlie HCharlie H
9,03342550
add a comment |
In JS you can express a number with optional decimal point.
x = 5.; //5
x = 5. + 6. //11
answered 1 hour ago
Charlie HCharlie H
9,03342550
In JS you can express a number with optional decimal point.
x = 5.; //5
x = 5. + 6. //11
answered 1 hour ago
Charlie HCharlie H
9,03342550
answered 1 hour ago
Charlie HCharlie H
9,03342550
answered 1 hour ago
Charlie HCharlie H
9,03342550
answered 1 hour ago
Charlie HCharlie H
9,03342550
9,03342550
add a comment |
add a comment |
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2
0.is like0.0. Or just0.– Ry-♦
2 hours ago