Use ready() to make a function available after the document is loaded:
The ready event occurs when the DOM (document object model) has been loaded, and the page has been fully loaded (including images).
Because this event occurs after the document is ready, it is a good place to have all other jQuery events and functions. Like in the example above.
The ready() method specifies what happens when a ready event occurs.
Tip: The ready() method should not be used together with <body onload="">.
Two syntaxes can be used:
The ready() method can only be used on the current document, so no selector is required:
|function||Required. Specifies the function to run after the document is loaded|
Your message has been sent to W3Schools.