The '[attribute] Selector' is used to select the elements, that matches a particular attribute.
Say, for example, <p>, <div>, <h1> e.t.c. are called elements in HTML.
And the <p> or <div> element can have a 'class' or 'id'.
<p class = "para1"> First Paragraph </p>
These 'class' or 'id' are called as attribute in HTML.
Let us learn more with the below example.
<html>
<head>
<title> My First Programme </title>
</head>
<body>
<h1> JQuery </h1>
<p class = "para1"> First Paragraph </p>
<p class = "newPara"> Next Paragraph </p>
<p id = "nextPara"> New Next Paragraph </p>
<button> Click me </button>
<script src = "https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"> </script>
<script>
$('button').click( function() {
$('[class]').text("The contents of the elements with class attribute got changed")
});
</script>
</body>
</html>
So, if you see the above code. We can see that there are three <p> elements, where the first two <p> elements has a 'class' attribute.
<p class = "para1"> First Paragraph </p> <p class = "newPara"> Next Paragraph </p>
And the third <p> element has an 'id' attribute in it.
<p id = "nextPara"> New Next Paragraph </p>
And we only want to change the contents of the elements that has a 'class' attribute in it.
And this happened with the '[class]' element selector.
$('button').click( function() {
$('[class]').text("The contents of the elements with class attribute got changed")
});The moment the button is clicked, JQuery statement gets triggered.
$('[class]').text("The contents of the elements with class attribute got changed")And the JQuery code locates the elements with class attribute and changes its content.