Chaining

Chaining are used to run multiple jQuery methods (on the same element) within a single statement.

Syntax

css("propertyname");

Example of css()

<!DOCTYPE html>
<html>
<head>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
$(document).ready(function(){
  $("button").click(function(){
    $("#para").css("color", "blue").slideUp(2500).slideDown(2500);
    });
});
</script>
</head>
<body>

<p id="para">Hello JQuery !!.</p>

<button>Click me</button>

</body>
</html>

Output

Hello JQuery !!
Note: you can format above code like you want, including line breaks. JQuery is not very strict on the syntax.