correct parseflow syntax?

[Underlord]

Hi

I´m just writing a simple dynamic counter.

Form:
<form name="eqform">
<input name="ButtonLectureplus" value="+1" type="button" onclick="lectureplus(0.75)">
<input name="TextLecture" type="text" size="30" maxlength="30" readonly>
</form>

1). Function:
function lectureplus(number)
{document.eqform.TextLecture.value++;}

This works in a way that "number" isn´t used and 1 is added repeatedly.

2). Function:
function lectureplus(number)
{document.eqform.TextLecture.value = document.eqform.TextLecture.value + number;}

This doesn´t work because he shows me "0,750,750,75 .... " (and also "+=0.75" shows the same result)

alert (typeof document.eqform.TextLecture.value + number); show me "string0.75"

I tried to use parsefloat() to force "document.eqform.TextLecture.value" be a number but can not find the right syntax to make it work.

"parsefloat(document.eqform.TextLecture.value)" doesn´t work

Does someone know the right syntax?

Thank Underlord

[Kor]

parseFloat(value, 10). Or you may use Number(value)

[Underlord]

parseFloat(value, 10). Or you may use Number(value)

Works partly thanks

alert (typeof parseFloat(document.eqform.TextLecture.value) shows number

alert (parseFloat(document.eqform.TextLecture.value) + (parseFloat(number)));
shows NaN0.75

consequently
parseFloat(document.eqform.TextLecture.value) = parseFloat(document.eqform.TextLecture.value) + (parseFloat(number));
doesn´t work either - any ideas for that?

I´m now trying to make an if statement because the first time I use the function parseFloat(document.eqform.TextLecture.value) = NULL and not 0.
We´ll see how that goes.

[Kor]

Use Number() instead of parseFloat(). It will return 0 if the value is an empty string. Parsing methods are, in fact, methods to parse a number from another base to decimal.

[Underlord]

Use Number() instead of parseFloat(). It will return 0 if the value is an empty string. Parsing methods are, in fact, methods to parse a number from another base to decimal.

Yes that did it. Thanks a lot!!!

document.eqform.TextLecture.value = Number(document.eqform.TextLecture.value) + Number(number);