JSFiddle - React, Tailwind, and code Playground

by Dineshkani

HTML

<div id="firstdiv" class="sample">
    <div>Hello World</div>
    <div class="simple">Foo</div>
    <div>Welcome</div>
    <div>Ends</div>
</div>

<input type="button" value="Check" />

CSS

.sample{
    background-color: white;
    height: 140px;
}

.foo{
    background-color: yellow;
}

JavaScript

$("input").click(function(){
    $("#firstdiv > div").each(function(){
        if ($(this).is("div")){
              $(this).addClass("foo");
        }
    });
});