valid-anagram solution

Author: seona926

valid-anagram/seona926.js

@@ -0,0 +1,32 @@
+/**
+ * @param {string} s
+ * @param {string} t
+ * @return {boolean}
+ */
+let isAnagram = function (s, t) {
+  let cntObj = {};
+
+  s.split("").forEach((item) => {
+    if (cntObj[item]) {
+      ++cntObj[item];
+    } else {
+      cntObj[item] = 1;
+    }
+  });
+
+  for (let item of t) {
+    if (cntObj[item] === undefined || cntObj[item] < 1) {
+      return false;
+    } else {
+      --cntObj[item];
+    }
+  }
+
+  for (let count of Object.values(cntObj)) {
+    if (count > 0) {
+      return false;
+    }
+  }
+
+  return true;
+};