| 5. 8. 6. parseInt() method |
|
|
The parseInt() method starts with the character in position 0 and determines if this is a valid number |
If it isn't, the method returns NaN and doesn't continue. |
If it is valid, the method goes on to the character in position 1. |
This process continues until a character isn't a valid number. |
parseInt() takes the string up to that point and converts it into a number. |
parseInt("1234AAA") returns 1234 because it stops processing one it reaches the character A. |
Any number literal contained in a string is also converted correctly. |
The string "0xA" is properly converted into the number 10. |
The string "22.5" will be converted to 22, because the decimal point is an invalid character for an integer. |
|
var iNum1 = parseInt("1234blue");
var iNum2 = parseInt("0xA");
var iNum3 = parseInt("22.5");
var iNum4 = parseInt("blue");
|
|