Exception performance

JavaScript performance comparison

Revision 3 of this test case created by Luke Page

Info

Testing exception .vs. normal flows in try-catch blocks

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Testing in unknown unknown
Test Ops/sec
Normal flow
try {
 new Error('foo'); // Not thrown
} catch (e) {}
pending…
Exception flow
try {
 throw new Error('foo'); // Thrown
} catch (e) {}
pending…
Empty block
try {
 'foo'
} catch (e) {}
pending…
Throw constant
try {
 throw 'foo'
} catch (e) {}
pending…
Undefined Exception
try {
 undefined["doesn't exist"]; // Thrown
} catch (e) {}
pending…

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1 comment

ngryman commented :

empty block does not seem relevant here as modern js vm will probably optimize it to nothing ...

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