String Concatenation vs. Array.join

JavaScript performance comparison

Test case created by majman

Preparation code

<script>
  var words = ['Lorem', 'ipsum', 'dolor', 'sit', 'amet,', 'consectetur', 'adipisicing', 'elit,', 'sed', 'do', 'eiusmod', 'tempor', 'incididunt', 'ut', 'labore', 'et', 'dolore', 'magna', 'aliqua.', 'Ut', 'enim', 'ad', 'minim', 'veniam,', 'quis', 'nostrud', 'exercitation', 'ullamco', 'laboris', 'nisi', 'ut', 'aliquip', 'ex', 'ea', 'commodo', 'consequat.', 'Duis', 'aute', 'irure', 'dolor', 'in', 'reprehenderit', 'in', 'voluptate', 'velit', 'esse', 'cillum', 'dolore', 'eu', 'fugiat', 'nulla', 'pariatur.', 'Excepteur', 'sint', 'occaecat', 'cupidatat', 'non', 'proident,', 'sunt', 'in', 'culpa', 'qui', 'officia', 'deserunt', 'mollit', 'anim', 'id', 'est', 'laborum'];
</script>
    

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
String Concatenation
str = '';
for (var i = 0; i < words.length; i++) {
  str += words[i];
}
return str;
pending…
Array.join
var tmp = [];
for (var i = 0; i < words.length; i++) {
  tmp.push(words[i]);
}
str = tmp.join(' ');
return str;
pending…

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