Question

Below is what I have in Javascript

var x=["1","2","3","4","5","6"];
c = (b = x[1])[0] ;
alert("B=" + b);
alert("C=" + c);

When I run this in Firefox 9.0.1, I get below output.

B=2
C=2

When I run same in IE7, I get below output.

B=2
C=undefined

Can I know why IE is displaying as undefined??

Thanks in advance!!!

Answer 1

That’s because IE7 doesn’t support accessing strings by index.

This works in all browsers:

c = (b = x[1]).charAt(0);