Eval always bad? (v2)

Revision 2 of this benchmark created by Malte Ubl on

Preparation HTML

<script>
  var FN_STR = 'for (var i = 0; i < 10000000; i++) {' +
    'sum += i;'+
  '}';
  var sum = 0;
  eval('function evalsum() {'+FN_STR+'}');
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
no-eval
var sum = 0;
(function() {
for (var i = 0; i < 10000000; i++) {
  sum += i;
}
})();
ready
eval
eval('var sum = 0;');
(function() {
for (var i = 0; i < 10000000; i++) {
  sum += i;
}
})();
ready
eval-empty
eval('');
var sum = 0;
(function() {
for (var i = 0; i < 10000000; i++) {
  sum += i;
}
})();
ready
Hidden-eval
(function() {eval('');})();
var sum = 0;
(function() {
for (var i = 0; i < 10000000; i++) {
  sum += i;
}
})();
ready
just-eval
var doSum
(function() {eval('var sum = 0;');
doSum = function() {
  for (var i = 0; i < 10000000; i++) {
    sum += i;
  }
}
})();
doSum();
ready
eval-fn
var sum = 0;
eval(FN_STR);
ready
fn-from-eval
evalsum()
ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

  • Revision 1: published by Malte Ubl on
  • Revision 2: published by Malte Ubl on