Method
Description
Example
first()
Selects the first element in the set of matched elements.
$("#container p").first().addClass("highlight");
last()
Selects the last element in the set of matched elements.
$("#container p").last().css("color", "blue");
q(index)
Selects the element at the specified index (0-based) in the set of matched elements.
$("#container p").eq(1).css("font-style", "italic");
filter(selector)
Reduces the set of matched elements to those that match the selector or pass the function's test.
$("#container p").filter(":contains('Third')").css("text-decoration", "underline");
not(selector)
Removes elements from the set of matched elements that match the selector.
$("#container p").not(":even").css("border", "2px dashed red");
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>jQuery Filtering Example</title>
<script src="https://code.jquery.com/jquery-3.6.4.min.js"></script>
<style>
div {
padding: 10px;
margin: 5px;
border: 1px solid #ccc;
}
.highlight {
background-color: lightyellow;
}
</style>
</head>
<body>
<div id="parentContainer">
<p>First paragraph.</p>
<p>Second paragraph.</p>
<p>Third paragraph.</p>
</div>
<script>
// Using first() to select the first element and apply styling
$("#parentContainer p").first().addClass("highlight");
// Using last() to select the last element and apply styling
$("#parentContainer p").last().css("color", "blue");
// Using eq() to select a specific index (1-based) and apply styling
$("#parentContainer p").eq(1).css("font-style", "italic");
// Using filter() to select elements based on a condition and apply styling
$("#parentContainer p").filter(":contains('Third')").css("text-decoration", "underline");
// Using not() to select elements that do not match a condition and apply styling
$("#parentContainer p").not(":even").css("border", "2px dashed red");
</script>
</body>
</html>
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