I am trying to split an expression on some specific chars. I know we can use String.split() with regex, so this was my first guess:
function expressionSplit([input]) {
let regex = /([ (),;.]+)/g;
let arr = input.split(regex);
arr.forEach(item => console.log('item: ' + item));
}
expressionSplit(['let sum = 1 + 2;if(sum > 2){\tconsole.log(sum);}']);Now this is nowhere near what I expected, so I did some more reading and found that people, unlike me, use split() with regex without problems. Puzzled, I tried this:
function expressionSplit([input]) {
let regex = /([ (),;.]+)/g;
let arr = input.replace(regex, '|').split('|');
arr.forEach(item => console.log('item: ' + item));
}
expressionSplit(['let sum = 1 + 2;if(sum > 2){\tconsole.log(sum);}']);And contrary to my expectations - it worked, mostly. Why does this happen? I expect it's some sort of JS-typical oddness, because it simply makes no sense to me, plus, as I said - other people seem to use split() with regex without problem. Also How can I split by '\t' (tab). Adding '\t' to regex seems to do nothing and '\\t' only matches 't'. Thanks.
