MeasureThat.net

Run results for: isArray vs length (with alpha)

Array.isArray vs array.length > 0

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36
Chrome 127
Windows
Desktop
9 months ago
Test name Executions per second
Array.isArray 29614852.0 Ops/sec
Check object.length 29346898.0 Ops/sec
Script Preparation code:
​x
 
function myIsArray(obj){
  return obj.length > 0;
}
​
var isArray = Array.isArray
Tests:

  • Array.isArray

     
    isArray(["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"])

  • Check object.length

     
    myIsArray(["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"])