Help with Javascript

[bcap]

I am trying to use 3 text fields to add up and the total compiles on a
forth.

For example:

Field 1: $5
Field 2: $5
Field 3: $10
Field 4: $20 (Field 1 + 2 + 3)

Also, is it posible to have field 4 update on the fly once field 1,2,
or 3 are clicked off?

Any thoughts/advise would be greatly appreciated!!!!


THANK YOU!

 

[Joost Diepenmaat]

I am trying to use 3 text fields to add up and the total compiles on a
forth.

For example:

Field 1: $5
Field 2: $5
Field 3: $10
Field 4: $20 (Field 1 + 2 + 3)

Also, is it posible to have field 4 update on the fly once field 1,2,
or 3 are clicked off?
Yes.

Any thoughts/advise would be greatly appreciated!!!!

See onblur, the value property and basic math.

I keep thinking you want to ask a question.

Joost.

 

[William James]

I am trying to use 3 text fields to add up and the total compiles on a
forth.

For example:

Field 1: $5
Field 2: $5
Field 3: $10
Field 4: $20 (Field 1 + 2 + 3)

C:\bin\jslibs\examples>js miniInteractiveConsole.js
Type "exit" to exit
js> [5,5,10].reduce( function(a,b) a+b)
20
js> eval( [5,5,10].join('+') )
20

 

[David Mark]

I am trying to use 3 text fields to add up and the total compiles on a
forth.

For example:

Field 1: $5
Field 2: $5
Field 3: $10
Field 4: $20 (Field 1 + 2 + 3)

C:\bin\jslibs\examples>js miniInteractiveConsole.js
Type "exit" to exit
js> [5,5,10].reduce( function(a,b) a+b)
20
js> eval( [5,5,10].join('+') )
20

Nice console dump, proving beyond a shadow of a doubt that 5 + 5 + 10
== 20.

 

[Thomas 'PointedEars' Lahn]

C:\bin\jslibs\examples>js miniInteractiveConsole.js
Type "exit" to exit
js> [5,5,10].reduce( function(a,b) a+b) ^^^^^^^^^^^^^^^^^
20
js> eval( [5,5,10].join('+') )
20

Nice console dump, proving beyond a shadow of a doubt that 5 + 5 + 10
== 20.

...and that William is using a magic interpreter that won't throw a
syntax error for the first line.

That would have to be Mozilla.org SpiderMonkey 1.8 or later. The marked
part is an expression closure; the local version of the ECMAScript Support
Matrix already has it.


PointedEars