Ternary if in Javascript with function

Question

I would like to write a ternary if statement in javascript where you call a function and if it returns a value other then 0 set the variable to that value otherwise set it to something else ex:

selectedStartDate = (GetURLParameter("StartDate")) ? 
                     GetURLParameter("StartDate") : 
                     $("#start_date").val();

Is there a way to get rid of the double function call?

Dave Newton · Accepted Answer · 2013-11-05 15:58:37Z

8

selectedStartDate = GetURLParameter("StartDate") || $("#start_date").val();

answered Nov 5, 2013 at 15:58

Dave Newton

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Adam Jenkins · Accepted Answer · 2013-11-05 15:58:49Z

5

selectedStartDate = GetURLParameter("StartDate") || $("#start_date").val();

answered Nov 5, 2013 at 15:58

Adam Jenkins

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Naftali · Accepted Answer · 2013-11-05 15:58:50Z

1

getURLParam = GetURLParameter("StartDate");    
selectedStartDate = (getURLParam ) ? getURLParam  : $("#start_date").val();

answered Nov 5, 2013 at 15:58

Naftali

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p.s.w.g · Accepted Answer · 2013-11-05 15:59:00Z

1

Why not just do something like this:

var urlParameter = GetURLParameter("StartDate");
selectedStartDate = urlParameter ? urlParameter : $("#start_date").val();

answered Nov 5, 2013 at 15:59

p.s.w.g

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