And obviously :
var chr1 = "a159";
var chr2 = "1a59";
var chr3 = "15a9";
var chr3 = "159a";
Object.isNumber(+chr1 ) --> FALSE // Note that : +'a159' = NaN and
parseInt('a159', 10) = NaN;
Object.isNumber(+chr2 ) --> FALSE // Note that : +'1a59' = NaN but
parseInt('1a59', 10) = 1;
Object.isNumber(+chr3 ) --> FALSE // Note that : +'15a9' = NaN but
parseInt('15a9', 10) = 15;
Object.isNumber(+chr4 ) --> FALSE // Note that : +'159a' = NaN but
parseInt('159a', 10) = 159;
Sorry for double post...
A_r_e_s
On Sep 5, 1:07 pm, EMoreth <[EMAIL PROTECTED]> wrote:
> Thats why im asking if NaN should not be a number...
>
> Because this way we can test things like he said:
>
> var nmb1 = new String("159");
> var nmb2 = "159";
> var nmb3 = 159;
>
> Object.isNumber(+nmb1) --> TRUE
> Object.isNumber(+nmb2) --> TRUE
> Object.isNumber(+nmb3) --> TRUE
>
> Object.isNumber(nmb1) --> FALSE
> Object.isNumber(nmb2) --> FALSE
> Object.isNumber(nmb3) --> TRUE
>
> I think that this should be the right behavior huh ??
>
> EMoreth
>
> On Sep 4, 8:34 am, kangax <[EMAIL PROTECTED]> wrote:
>
>
>
> > On Sep 4, 5:18 am, Станислав Анисимов <[EMAIL PROTECTED]>
> > wrote:
>
> > > Is't this a rigth way to define types:
> > > 111 is Integer and Number
> > > '111' is Number and String
> > > 'a111' is String
>
> > Only `111` is a number primitive. The rest two are plain strings. To
> > find out if a value can be type-converted into a number (as you seem
> > to want to do), you might try something like:
>
> > function canConvertToNumber(n) {
> > return !isNaN(+n);
>
> > };
>
> > --
> > kangax- Hide quoted text -
>
> - Show quoted text -
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