Javascript variable as function name in chain

Question

I am trying to pull a variable that is captured from a form element in to a function chain. The variable value needs to act as a function name. Example:

<form name="myform">
  <input type="radio" id="DayOfWeek" name="DayOfWeek" value="monday" />Monday
  <input type="radio" id="DayOfWeek" name="DayOfWeek" value="tuesday" />Tuesday
  <input type="radio" id="DayOfWeek" name="DayOfWeek" value="wednesday" />Wednesday
  <input type="radio" id="DayOfWeek" name="DayOfWeek" value="thursday" />Thursday
  <input type="radio" id="DayOfWeek" name="DayOfWeek" value="friday" />Friday
</form>

script:

var **monthday**=$("input[name='DayOfWeek']:checked").val();
NewDate = Date.parse(NewDate).add(1).month().**monthday**();

My problem has been getting the variable 'monthday' value to act as the function name in that chain. Am I having a 'duh' moment or is this not possible?

remember, in js objects are "Dictionaries", and everything is object — Guillaume86
– Guillaume86, Commented Feb 10, 2011 at 17:17

Rafał Dowgird · Accepted Answer · 2011-02-10 17:15:10Z

2

How about this:Date.parse(NewDate).add(1).month()[monthday]();?

answered Feb 10, 2011 at 17:15

Rafał Dowgird

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1 Comment

RandyRRR Over a year ago

perfect, thanks. Was trying to string a couple together and that's where I had my problem. Should have taken out the dot that was separating the bracketed values.

Andy E · Accepted Answer · 2011-02-10 17:15:17Z

2

Use bracket notation:

var monthday = $("input[name='DayOfWeek']:checked").val();
NewDate = Date.parse(NewDate).add(1).month()[monthday]();

answered Feb 10, 2011 at 17:15

Andy E

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1 Comment

RandyRRR Over a year ago

you guys rock! kind-f a duh moment there. I was stringing together two captured variables and was doing: NewDate = Date.parse(NewDate).add(1).month()[monthday]().[monthrate](); needed to take out that second dot. Thanks for the quick responses!

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