event on page load jquery code example

Example 1: document ready

$( document ).ready(function() {
    console.log( "ready!" );
});

Example 2: call a function on load jquery

$(document).ready(function () {
  // Function code here.
});

Example 3: jquery document ready

The .ready() method is typically used with an anonymous function:
$( document ).ready(function() {
  // Handler for .ready() called.
});

Which is equivalent to the recommended way of calling:
$(function() {
  // Handler for .ready() called.
});