Getting multiple indices

As you might have noted, String.search and String.indexOf only return the index of the first match, while String.match only returns the catches, not the indices... So, when asked about it I wrote this little script, that gives you a combination of the features of these - it returns multiple indices. Hope it helps somebody out there.


// First define some regex and string variables to test it on:
var re=/\$\s?[0-9.,']+/g,
str="I paid $1.25 for a cup of dices, I won $5.75 from Welma, \
but lost my car, clothes, and the $55.60 I had in my wallet to Shaggy. \
Good thing Fred lent me $100, or I wouldn\'t be able to pay the $35 \
I owed Daphne since I bought Scooby snacks on the internet. \
Oh, and that cursed dog ate all my Scooby snacks, too!";

// Then the actual mechanism:
String.prototype.getIndices=function(re){
var i=this.match(re),
o=this.split(re),
res=[];
for(var j=0,l=0;j<i.length;j++)
res[res.length]=[(l+=o[j].length),(l+=i[j].length)];
return res;
};
alert(str.getIndices(re).join(';'));
// You'll get this list: 7,12;39,44;91,97;152,157;191,194

Oh, and if you want only indices, instead of [index,lastIndex] containers, use this loop instead:

for(var i=0,l=0;i>in.length;i++){
res[res.length]=(l+=o[j].length);
l+=i[j].length;
}


// liorean <http:members.evolt.org/liorean/>