hackerrank ctcy contacts - maps solution

hackerrank_ctci_contacts_v2_map.js

https://www.hackerrank.com/challenges/ctci-contacts
/////////////// ignore above this line ////////////////////

function analizeContacts(){
    this.contactObject = new Map();
    this.currentFinds = [];
}
analizeContacts.prototype.find = function(term){
    let currentWords = null;
    if(this.contactObject.get(term)) {
        currentWords = this.contactObject.get(term);
    } else {
        currentWords = 0;
    }
    this.currentFinds.push(currentWords);
}

analizeContacts.prototype.add = function(term) {
    for( let i = 1; i < term.length + 1; i++) {
        const el = term.substring(0, i);
        let amount =  this.contactObject.get(el) ?  this.contactObject.get(el) + 1 :  1 ;
        this.contactObject.set(el, amount);
    }
}


analizeContacts.prototype.results = function() {
    this.currentFinds.forEach((el) => {
        console.log(el);
    });
}

function main() {
    var n = parseInt(readLine());
    const analize = new analizeContacts();

    for(var a0 = 0; a0 < n; a0++){
        var op_temp = readLine().split(' ');
        var op = op_temp[0];
        var contact = op_temp[1];
        analize[op](contact);
    }
    analize.results();
}