split and pop vs lastIndexOf and substr

JavaScript performance comparison

Test case created by Mark S Everitt

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Testing in unknown unknown
Test Ops/sec
lastIndexOf and substr
 
var uri = 'baseUri:and:some:colons:' + parseInt(Math.random() * 1000, 10);
var port = parseInt(uri.substr(uri.lastIndexOf(':') + 1), 10);
 pending…
split and pop
 
var uri = 'baseUri:and:some:colons:' + parseInt(Math.random() * 1000, 10);
var splitUri = uri.split(':');
var port = parseInt(splitUri[splitUri.length - 1], 10);
 pending…

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