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JS Bin anagram checker and reduce example // source http://jsbin.com/felila

<!DOCTYPE html>
<html>
<head>
<meta name="description" content="anagram checker and reduce example">
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

<script id="jsbin-javascript">
var names = ['Alice', 'Bob', 'Tiff', 'Bruce', 'Alice'];

var countedNames = names.reduce(function (allNames, name) { 
  if (name in allNames) {
    allNames[name]++;
  }
  else {
    allNames[name] = 1;
  }
  return allNames;
}, {});
console.clear();
console.log(countedNames);

// countedNames is:
// { 'Alice': 2, 'Bob': 1, 'Tiff': 1, 'Bruce': 1 }

var word1 = "aba";
var word2 = "aa";
// convert strings to LC for case insensitivity
// split strings into arrays
// sort the arrays (spaces will sort first and be trimmed later)
// join the arrays back into strings
// we're only concerned about the printable characters in the anagram so,
// trim() to remove any spaces and then compare the resulting strings
var str1 = this.word1.toLowerCase().split('').sort().join('').trim();
var str2 = this.word2.toLowerCase().split('').sort().join('').trim();
 
if (str1 === str2) { console.log("true");
    this.isAnagram = true;
} else { console.log("fff");
    this.isAnagram = false;
}
</script>

<script id="jsbin-source-javascript" type="text/javascript">
 
var names = ['Alice', 'Bob', 'Tiff', 'Bruce', 'Alice'];

var countedNames = names.reduce(function (allNames, name) { 
  if (name in allNames) {
    allNames[name]++;
  }
  else {
    allNames[name] = 1;
  }
  return allNames;
}, {});
console.clear();
console.log(countedNames);

// countedNames is:
// { 'Alice': 2, 'Bob': 1, 'Tiff': 1, 'Bruce': 1 }

var word1 = "aba";
var word2 = "aa";
// convert strings to LC for case insensitivity
// split strings into arrays
// sort the arrays (spaces will sort first and be trimmed later)
// join the arrays back into strings
// we're only concerned about the printable characters in the anagram so,
// trim() to remove any spaces and then compare the resulting strings
var str1 = this.word1.toLowerCase().split('').sort().join('').trim();
var str2 = this.word2.toLowerCase().split('').sort().join('').trim();
 
if (str1 === str2) { console.log("true");
    this.isAnagram = true;
} else { console.log("fff");
    this.isAnagram = false;
}</script></body>
</html>