動態改變javascript中if語句的條件

Question

這段代碼是動態地改變條件的，但是這個語句被chrome識別並且interperted，而不是fx，怎麼解決這個問題？感謝

if a % 2 == 0 
    var condition = b == c || b == d; 
else 
    var condition = b == e || b == f ; 

if (condition) 
    ...... 

Answer 1

var condition = (a % 2 == 0) ? (b == c || b == d) : (b == e || b == f); 

Answer 2

寫這樣的：

var condition; 
if (a % 2 == 0) 
    condition = b == c || b == d; 
else 
    condition = b == e || b == f ; 

if (condition) 
    ......