Menu
I have the following two parseInt() and I am not quite sure why they gave me different results:
alert(parseInt(0.00001)) shows 0;
alert(parseInt(0.00000001)) shows 1
My guess is that since parseInt needs string parameter, it treats 0.00001 as ""+0.00001 which is "0.00001", therefore, the first alert will show 0 after parseInt. For the second statement, ""+0.00000001 will be "1e-8", whose parseInt will be 1. Am I correct?
Thanks
458
The parseFloat() function is used to accept the string and convert it into a floating-point number. If the string does not contain a numeral value or If the first character of the string is not a Number then it returns NaN i.e, not a number.
Check if the value has a type of number and is not an integer. Check if the value is not NaN . If a value is a number, is not NaN and is not an integer, then it's a float.
The parseInt function converts its first argument to a string, parses that string, then returns an integer or NaN . If not NaN , the return value will be the integer that is the first argument taken as a number in the specified radix .
parseInt() is an easy way to parse a string value and return a rounded integer. If you're working with a special use-case and require a different numerical base, modify the radix to your choosing.
I believe you are correct.
parseInt(0.00001) == parseInt(String(0.00001)) == parseInt('0.00001') ==> 0
parseInt(0.00000001) == parseInt(String(0.00000001)) == parseInt('1e-8') ==> 1
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
