anagram program in javascript

1    function group_anagrams(arr) {
2      let   sortedArr = arr.map(item => item.split('').sort().join(''));
3      let setArr = new Set(sortedArr);
4      let reducedObj = {};
5      for (let setItem of setArr) {
6        let indexArr = sortedArr.reduce((acc, cur, index) => {
7          if (setItem === cur) {
8            acc.push(index);
9          }
10          return acc;
11        }, []);
12        reducedObj[setItem] = indexArr;
13      }
14      let finalArr = [];
15      for (let reduceItem in reducedObj) {
16        finalArr.push(reducedObj[reduceItem].map(item => arr[item]));
17      }
18      return finalArr;
19    }
20    group_anagrams(['car','cra','rca', 'cheese','ab','ba']);

1function anagram(name, words) {
2	var a = name.replace(/\s/g,'').toLowerCase().split('').sort().join('');
3	var b = words.join('').split('').sort().join('');
4	return a == b;
5}

1function isAnagram(stringA, stringB) {
2  // Sanitizing
3  stringA = stringA.toLowerCase().replace(/[\W_]+/g, "");
4  stringB = stringB.toLowerCase().replace(/[\W_]+/g, "");
5
6  // sorting
7  const stringASorted = stringA.split("").sort().join("");
8  const stringBSorted = stringB.split("").sort().join("");
9
10  return stringASorted === stringBSorted;
11}

1function anagram(name, words) {
2	name =  name.toLowerCase().split('').sort().join('').trim();
3  words = words.join('').toLowerCase().split('').sort().join('');
4  return name === words;
5}