Info

checks different string concatenation methods

Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var s, S, A, X, Y, concat = String.prototype.concat;
  };
</script>

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s = '';
s += 'aa';
s += 'bb';
s += 'cc';
s += 'dd';
s += 'ee';
s += 'ff';
s += 'gg';
s += 'hh';
s += 'ii';

S = [];
S.push('aa');
S.push('bb');
S.push('cc');
S.push('dd');
S.push('ee');
S.push('ff');
S.push('gg');
S.push('hh');
S.push('ii');
S = S.join('');

X = [
'aa',
'bb',
'cc',
'dd',
'ee',
'ff',
'gg',
'hh',
'ii'
].join('');

A = new Array(9);
A[0] = 'aa';
A[1] = 'bb';
A[2] = 'cc';
A[3] = 'dd';
A[4] = 'ee';
A[5] = 'ff';
A[6] = 'gg';
A[7] = 'hh';
A[8] = 'ii';
A = A.join('');

Y = (new Array(
'aa',
'bb',
'cc',
'dd',
'ee',
'ff',
'gg',
'hh',
'ii'
)).join('');

concat.call(
'aa',
'bb',
'cc',
'dd',
'ee',
'ff',
'gg',
'hh',
'ii');

'aa'.concat(
'bb',
'cc',
'dd',
'ee',
'ff',
'gg',
'hh',
'ii');

s = '' + 'aa' + 'bb' + 'cc' + 'dd' + 'ee' + 'ff' + 'gg' + 'hh' + 'ii';

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published on 6th December 2011
• Revision 2: published on 6th December 2011
• Revision 3: published by Jonatas Miguel on 20th December 2011
• Revision 4: published on 20th December 2011
• Revision 5: published by Jonatas Miguel on 11th January 2012
• Revision 6: published by Franz Josef Kaiser on 3rd November 2012
• Revision 7: published on 3rd November 2012

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