With Java-Script problems

Hi, the problem is that a2 yelds : 5e-7 (try alert(a2+'');) and if you write M2=5e-7 then you have what is displayed : 5 exp(1)-7

A workaround for the moment : use .substring(4) that delete the 4 first characters : <a><2><space><=> from a2 = 0.0000005

a1=ggbApplet.getValueString('a1').substring(4);

a2=ggbApplet.getValueString('a2').substring(4);

a3=ggbApplet.getValueString('a3').substring(4);

ggbApplet.evalCommand('M1='+a1);

ggbApplet.evalCommand('M2='+a2 );

ggbApplet.evalCommand('M3='+a3 );

Cheers. Michel

@ Michel

Thank you for your prompt reply .Now I understand the origin of the numbers.

In the representation of numbers,

Can you, please, explain the meaning of the substring(4) (e g why not substring(5) ? or 6 ...) (a2=15*10^(-12 ))

...that delete the 4 first characters : from this number? or from name: <a> <2> <space> =

If the number (e.g. a=12* 10-7) is calculated in the Jscript -how it can be displayed? (With  alert(...+'') is OK!)

Thanks for your help. Roman Chijner

var a="01234567"

a.substring(4) yelds : "4567" ,

this command let us keep the part of the string from the index 4 to the end (knowing that the first index is 0).

Hi,

@ Michel thanks again

I have a little the same problem

Let in the j-script (as a result of the calculations) is the number abs(r2)<10^(-6).

How can it be added to a GGB file?

Roman Chijner

r1=1.000000001234567812345

r2=0.000000001234567812345




alert('r1=1.000000001234567812345→'+r1+'\n'+'r2=0.000000001234567812345→'+r2)




ggbApplet.evalCommand('r1='+r1);

ggbApplet.evalCommand('r2='+r2);

This should be more robust:

as 5E-7 is correct in GeoGebra, JavaScript gives 5e-7 (by default, but understands 5E-7 too)

@Michael Borcherds

Thank you very much. Works !!!

Pity that “e“ and „E“ are not synchronized

I think it will be convenient to use the function

function noo(a) {

return (a+'').replace('e','E');

}

r1=1.000000001234567812345

r2=0.000000001234567812345

ggbApplet.evalCommand('r1='+noo(r1));

ggbApplet.evalCommand('r2='+noo(r2));