how to select the first div in jQuery


<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>first demo</title>
<style>
td {
color: blue;
font-weight: bold;
}
</style>
<script src="https://code.jquery.com/jquery-3.5.0.js"></script>
</head>
<body>

<table>
<tr><td>Row 1</td></tr>
<tr><td>Row 2</td></tr>
<tr><td>Row 3</td></tr>
</table>

<script>
$( "tr:third" ).css( "font-style", "italic" );
</script>

</body>
</html>

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how to select multiple jquery element at once


// To select multiple html element at once using jquery, follow the syntax below
$("tagName1, tagName2, tageName3")
// The above code will select "tagName1", "tagName2", tagName3


// To select multiple element using "class name" follow the syntax below
$(".className1, .className2, .className3, .className4")

// To select multiple element using "id name" follow the syntax below
$("#idName1, #idName2")

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