Studying for JavaScript test, NEED HELP!!!

hellomott0

Hello,

Well my university exams are coming up in mid May and I am starting to study JavaScript. I am reading past exam questions and online tutorials. I have a problem though, that I came across today. Here is a picture of the question. Somebody please help me. Thanks!

20130416_141148.jpg

aperture_nuig

hellomott0 wrote: »

Hello,

Well my university exams are coming up in mid May and I am starting to study JavaScript. I am reading past exam questions and online tutorials. I have a problem though, that I came across today. Here is a picture of the question. Somebody please help me. Thanks!

20130416_141148.jpg

Can you tell us where you are having the problem specifically?

hellomott0

I am mostly having problems with the code to test for letter "a" and "e".


I know that for example:

var hello = /^ [a-zA-Z] /;


..that shows what letters you can enter..that's as far as it goes.

Thanks..

MeTV

You could just loop through the string one character at a time, check what each character is and increment a variable if it's one of the letters you're looking for.

srsly78

And if you don't know how to do that -> http://www.quirksmode.org/js/strings.html#charat

DonkeyStyle \o/

var matches = myString.match(/e/gi);
alert(matches.length);

matches can be null, so you'll have to handle that.

Cork Boy

OP, do you mind if I ask what course you are doing and what year you're in? I'm self studying and would love to know what level I'm at relative to a real college...

Cheers

Evil Phil

Work out how to solve the Fizz Buzz problem and this will be plain sailing to you.