RegExp Character Sets

Character Sets
- [abc] : defines specific selection
- [^abc] : defines other than specific selection
- [a-c] : defines range selection
- [^a-c] : defines other than range selection

It matches any character specified in the square brackets.

like [abc] : match any 'a' or 'b' or 'c'

For example :

var str="have a good day";
var pattern=/[agty]/g;
alert(str.match(pattern));
// Output: a,a,g,a,y

Matches: have a good day

It matches any character other then in the square brackets. Just add '^' at the beginning
like [^abc] : match any, other then a,b,c

For example :

var str="great day";
var pattern=/[^agty]/g;
alert(str.match(pattern));
// Output: r,e, ,d

Matches: great day

It matches any character within the range specified in the square brackets.

[abc] same as [a-c] in short
[0123456789] same as [0-9] in short

For example :

var str="great work";
var pattern=/[e-k]/g;
alert(str.match(pattern));
// Output: g,e,k

Matches: great work

It matches any character other then, within the range in the square brackets.

[^abc] same as [^a-c] in short
[^0123456789] same as [^0-9] in short

For example :

var str="great work";
var pattern=/[^e-k]/g;
alert(str.match(pattern));
// Output: r,a,t, ,w,o,r

Matches: great work

/[abc]/g

abcaxzAXab09a-zA-Zb-k0-90-zA-zZ-aa-zA-ZaA\-Z

^abc^axzAX^ab09^a-z^A-Z^b-k^0-9^a-zA-Z^aA\^Z

Remember ! Inside square bracket [],every character act as individual, except ^ - \ (only when used at proper place)

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