jQuery addClass example
Change class name on click in jQuery
by xDrago
HTML
<div id="banner-message">
<input type="text" id="inputVal">
<p>Hello World</p>
<p>hello world</p>
<p>Hello Duke</p>
<button id="btn">Button</button>
</div>
JavaScript
$('#btn').click( // if someone clicks the button
function () {
let input = $("#inputVal").val() //Takes the textbox textmy search text
$("p:contains('" + input + "')").css("background-color", "yellow");
});