Native Try/Catch vs. Custom tryCatch Function in a Loop

JavaScript performance comparison

Revision 6 of this test case created by asdf

Preparation code

<script>
var callback = null;
window.onerror = function(msg, file, line){
    var error = new Error(msg, file, line);
    if(callback){
        callback(error);
        callback = null;
    }
    return true;
};
	
function tryCatch(fn, fail){
    callback = fail;
    fn();
    callback = null;
}

function test(){
    var n = 1;	
}

function loop(){
    for(var i = 0; i < 500; i++){
        var n = 1;
    }
}

function error(){
    return null;	
}
</script>
    

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Try/Catch Block Outside Loop
try {
  for (var i = 0; i < 500; i++) {
    var n = 1;
  }
} catch (e) {}
pending…
Try/Catch Block Inside Loop
for (var i = 0; i < 500; i++) {
  try {
    var n = 1;
  } catch (e) {}
}
pending…
tryCatch Function Outside Loop
tryCatch(loop, error);
pending…
tryCatch Function Inside Loop
for (var i = 0; i < 500; i++) {
  tryCatch(test, error);
}
pending…
no try/catch
for (var i = 0; i < 500; i++) {
  var n = 1;
}
pending…

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Revisions

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