Question

where do we start if we want to remove the affix from this sentence meangan menangkan dimenangkan

affix_list = [
'me-an',
'me-kan,
'di-kan
]

string = 'meangan menangkan dimenangkan'

so it will output

output = [
'ang',
'nang'
'menang'
]

Answer 1

You might want to use regular expressions for those replacements. Starting from your affix_list, this should work:

output = affix_list.reduce(function(str, affix) {
    var parts = affix.split("-");
    var regex = new RegExp("\\b"+parts[0]+"(\\S+)"+parts[1]+"\\b", "g");
    return str.replace(regex, "$1")
}, string).split(" ");

Your regexes will look like this:

/\bme(\S+)an\b/g
/\bme(\S+)kan\b/g
/\bdi(\S+)kan\b/g

But note that you will of course need to replace me-kan before me-an, else "menangkan" will become nangk before the me-kan expression can be applied.