Day 2 Exercise Level3 : why I have two most frequent words

[Yugio-Tang]

Hellow, Thank you for the work you've done.
I don't know whether I am not sure whether I complete the task 3 in the level3 of the exercise which finding the most frequent word with given the sentence.

/*3.
Clean the following text and find the most frequent word :
(hint, use replace and regular expressions).
 */
const sentence = '%I $am@% a %tea@cher%, &and& I lo%#ve %te@a@ching%;. The@re $is no@th@ing; &as& mo@re rewarding as educa@ting &and& @emp%o@weri@ng peo@ple. ;I found tea@ching m%o@re interesting tha@n any ot#her %jo@bs. %Do@es thi%s mo@tiv#ate yo@u to be a tea@cher!? %Th#is 30#Days&OfJavaScript &is al@so $the $resu@lt of &love& of tea&ching';
// Regex of symbol
let symbolPattern = /\W/gi;
replacement = sentence.replace(/ /gi, 'SYMBOL');
replacement = replacement.replace(symbolPattern, '');
replacement = replacement.replace(/SYMBOL/gi, ' ');
console.log("task3. regex X replace: \n", replacement);
let words   = replacement.split(' ');
let frequency = {};
let maxFrequency = 0;
let mostFrequentWord = '';
console.log(words);
for (let i=0; i < words.length; i++){
    // case insensitive matching
    //let word = words[i].toLowerCase();
    let word = words[i];
    if (frequency[word]){
        frequency[word] += 1; 
    } else {
        frequency[word] = 1;
    }
    if (frequency[word] > maxFrequency) {
        mostFrequentWord = word;
        maxFrequency     = frequency[word];
    }

}
console.log(frequency)
console.log(maxFrequency,mostFrequentWord );

output :

task3. regex X replace:
 I am a teacher and I love teaching There is nothing as more rewarding as educating and empowering people I found teaching more interesting than any other jobs Does this motivate you to be a teacher This 30DaysOfJavaScript is also the result of love of teaching
[
  'I',         'am',                 'a',
  'teacher',   'and',                'I',
  'love',      'teaching',           'There',
  'is',        'nothing',            'as',
  'more',      'rewarding',          'as',
  'educating', 'and',                'empowering',
  'people',    'I',                  'found',
  'teaching',  'more',               'interesting',
  'than',      'any',                'other',
  'jobs',      'Does',               'this',
  'motivate',  'you',                'to',
  'be',        'a',                  'teacher',
  'This',      '30DaysOfJavaScript', 'is',
  'also',      'the',                'result',
  'of',        'love',               'of',
  'teaching'
]
{
  I: 3,
  am: 1,
  a: 2,
  teacher: 2,
  and: 2,
  love: 2,
  teaching: 3,
  There: 1,
  is: 2,
  nothing: 1,
  as: 2,
  more: 2,
  rewarding: 1,
  educating: 1,
  empowering: 1,
  people: 1,
  found: 1,
  interesting: 1,
  than: 1,
  any: 1,
  other: 1,
  jobs: 1,
  Does: 1,
  this: 1,
  motivate: 1,
  you: 1,
  to: 1,
  be: 1,
  This: 1,
  '30DaysOfJavaScript': 1,
  also: 1,
  the: 1,
  result: 1,
  of: 2
}
3 I

It's a bit confusing with the result :
the count of 'teaching' is also 3.

[AvinashYerra]

Yeah, but you are only updating the result whenever you find a new word with the higher frequency. If you want all the highest frequency elements iterate and find the highest value of frequency and then find the words with the highest frequency.