如何使用javascript评估字符串中的字符串

Question

this works in PHP:

 $i = 4;
 $fruit4 = 'apple';
 $answer = $fruit{$i};
 echo $answer;  // apple

so i hoped this would work in javascript:

var i = 4;
var fruit4 = 'apple';
var answer = fruit{i};
print(answer);

but no luck! is there a way to do this using javascript?

NOTE: i realize this is more easily done with an array (var fruit[4] = 'apple') but that isn't an option this time due to pre-existing constraints.

thanks in advance!

Answer 1

Javascript has an function called eval, so try to use it. For example

var answer = eval("fruit"+ i);