Run results for: is_array, is_string

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36

Browser: Chrome 76

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
is_array	4274998.0 Ops/sec
is_string	8254648.5 Ops/sec

Script Preparation code:

var array = ["H", "E", "L", "L", "O", "."];
var string = "Hello.";


function is_array(array){
  if(array.constructor === Array){
      return true;
  }
  return false;
}

function is_string(string){
  if(typeof string === "string"){
    return true;
  }
  return false;
}

Tests:

is_array
is_array(string);
is_string
is_string(string);