different assignment

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var a = 0,
        b = 1;
};
</script>

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Testing in unknown unknown
Test Ops/sec
test_1
a = a || 1;
b = b || 1;
pending…
test_2
a || (a = 1);
b || (b = 1);
pending…
test_3
! a && (a = 1);
! b && (b = 1);
pending…

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