Run results for: children vs find < in jQuery

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:132.0) Gecko/20100101 Firefox/132.0

Browser: Firefox 132

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

parent.find("> *")

69.9M/s

parent.find("> .child")

69.7M/s

parent.find("> span")

69.2M/s

parent.find("> [data-attr=value]")

69.1M/s

parent.children()

16.7M/s

parent.children(".child")

6.3M/s

parent.children("span")

6.3M/s

parent.children("[data-attr=value]")

5.0M/s

View exact numbers

Test name	Executions per second
✓ parent.find("> *")	69,894,824 Ops/sec
parent.find("> .child")	69,726,312 Ops/sec
parent.find("> span")	69,163,272 Ops/sec
parent.find("> [data-attr=value]")	69,077,400 Ops/sec
parent.children()	16,696,999 Ops/sec
parent.children(".child")	6,301,780 Ops/sec
parent.children("span")	6,250,174 Ops/sec
parent.children("[data-attr=value]")	4,956,736 Ops/sec

HTML Preparation code:

<div id="#parent">
  <div class="child">Child Class 1</div>
  <div class="child">Child Class 2</div>
  <span>Child element 3</span>
  <span>Child element 4</span>
  <label data-attr="value">Child Attribute value 5</label>
  <label data-attr="value">Child Attribute value 6</label>
  <p>
     <span class="child" data-attr="value">Grandchild 7 (must not be matched)</div>
  </p>
</div><script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>

Script Preparation code:

Benchmark.prototype.setup = function() {

          
  var parent = $("#parent")

        
  };

Tests:

parent.children()
var results = parent.children();
parent.find("> *")
var results = parent.find("> *");
parent.children(".child")
var results = parent.children(".child");
parent.find("> .child")
var results = parent.find("> .child");
parent.children("span")
var results = parent.children("span");
parent.find("> span")
var results = parent.find("> span");
parent.children("[data-attr=value]")
var results = parent.children("[data-attr=value]");
parent.find("> [data-attr=value]")
var results = parent.find("> [data-attr=value]");