this first child jquery code example

Example 1: first child element javascript

Both these will give you the first child node:

console.log(parentElement.firstChild); // or
console.log(parentElement.childNodes[0]);

If you need the first child that is an element node then use:

console.log(parentElement.children[0]);

Example 2: jquery first child

$('div:first-child')

Example 3: jquery first child

$( "li" ).first().css( "background-color", "red" );

Example 4: select the first elemnt have class in jquery

<script>
  // jquery
$( "tr:first" ).css( "font-style", "bold" );
</script>