java script-fr�ga

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2 total messages Started by Daniel Johansson Sun, 01 Nov 1998 00:00

#15

Author: Daniel Johansson
Date: Sun, 01 Nov 1998 00:00

22 lines
970 bytes

Tjena!

Jag har en grundl�ggande java script-fr�ga.
Jag har en funktion l�ngst upp i ett HTML-dokument som heter
AddPrice_aftele.
V�rdet p� cost-variabeln genereras med en parseInt l�ngre
ner i HTML-dokumentet. Nu till fr�gan:
Innan jag ber�knar real_cost vill jag kolla att cost verkligen
�r ett heltal s� man inte knappat in bokst�ver eller liknande.
Om cost �r NaN (not a number) ska det s�ttas till 0.
Jag vet knappt n�t om java script. Hj�lp!

Koden hittills:

function addPrice_aftele(cost,button)
{
    .....vad h�r?....
    real_cost=cost+100.
}


HJ�LP!

Re: java script-fr�ga

#16

Author: Vilhelm Bergman
Date: Sun, 01 Nov 1998 00:00

32 lines
1210 bytes

In article <71i49f$8p7$1@nyheter.chalmers.se>,
Daniel Johansson <d96j@dtek.chalmers.se> wrote:
>Innan jag ber�knar real_cost vill jag kolla att cost verkligen
>�r ett heltal s� man inte knappat in bokst�ver eller liknande.
>Om cost �r NaN (not a number) ska det s�ttas till 0.
>
>Koden hittills:
>
>function addPrice_aftele(cost,button)
>{
>    .....vad h�r?....
>    real_cost=cost+100.
>}

	apa="7"
	
	if(parseInt(apa)!=parseFloat(apa)) {
		window.alert("float " + apa)
	} else {
		if(isNaN(apa)) {
			window.alert("NaN")
		} else {
			window.alert("int "+apa)
		}
	}

Borde v{l t{cka vad du ville ha...

/v
-- 
"Should array indices start at 0 or 1? My compromise of 0.5 was rejected
 without, I thought, proper consideration." - Stan Kelly-Bootle

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