Preparation code

<script>
  var str = '';
  for (i = 0; i < 1000; i++) {
    str += "i:" + i + " ";
  }
</script>

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var newstr = str.split(' ').join('_');

var newstr = str.replace(/ /g, '_');

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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 by Inez on 9th June 2011
• Revision 3: published on 6th August 2011
• Revision 4: published on 30th January 2012
• Revision 5: published on 4th December 2012

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