Run results for: Get props

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

Browser: Chrome 63

Operating system: Windows

Device Platform: Other

Date tested: 2025 years ago

Test name	Executions per second
get1	1173239.0 Ops/sec
get2	929651.6 Ops/sec
get3	2300980.0 Ops/sec

Script Preparation code:

var obj = {
  a: { b: { c: 'CCC' } }
};

function get1(obj, path) {
  var parts = path.split('.');
  var property = Object.assign({}, obj);

  for (var i = 0; i < parts.length; i++ ) {
    property = property[parts[i]];

    if (!property) {
      property = undefined;
      break;
    }
  }

  return property;
}

function get2(obj) {
  var res;

  Object.keys(obj).forEach((key1) => {
    switch(key1) {
      case 'a':
        Object.keys(obj[key1]).forEach((key2) => {
          switch(key2) {
            case 'b':
              Object.keys(obj[key1][key2]).forEach((key3) => {
                switch(key3) {
                  case 'c':
                  res = obj[key1][key2][key3];
                  break;
                }
              });
            break;
          }
        });
      break;
    }
  });

  return res;
}

function get3(obj, path) {
  var parts = path.split('.');

  return parts.reduce((xs, x) => (xs && xs[x]) ? xs[x] : null, obj)
}

Tests:

get1
get1(obj, 'a.b.c')
get2
get2(obj)
get3
get3(obj, 'a.b.c')

Get nested props from object

get1

get2

get3