Parses the given value and returns a number.
Example
up.util.parseNumber("123.4") // result: 123.4
Supported values
The list of supported notations differs slightly from parseFloat()
and Number():
| Supported argument |
Return value |
| ✔️ Zero |
"0" |
0 |
| ✔️ Positive integer |
"123" |
123 |
| ✔️ Negative value |
"-5" |
-5 |
| ✔️ Floating point number |
"4.6" |
4.6 |
| ✔️ Numeric separators |
"1_000_000" |
1000000 |
| ✔️ Already a number |
10 |
10 |
| ✔️ Negative zero |
"-0" |
-0 |
If the argument cannot be parsed, it returns undefined.
This function never throws an error and never returns NaN.
| Unsupported argument |
Return value |
| ❌ Unparseable format |
"foo" |
undefined |
| ❌ Missing argument |
undefined |
undefined |
| ❌ Infinity |
"Infinity" |
undefined |
| ❌ Exponential notation |
"314e-2" |
undefined |
| ❌ Unparseable type |
{ foo: 3 } |
undefined |
