JSFiddle - React, Tailwind, and code Playground

HTML

<p id="id1">1</p>
<p id="id2">2</p>
<p id="id3">3</p>

JavaScript

var v = {
    a: 1,
    b: 2,
    c: 3
};

var p = $('p');
console.log(p);

p.data(v).each(function () {
    var $t = $(this);
    console.log(this, $t, $t.data());
});
console.log($('#id1').data());
console.log('p.data', p.data());

p.each(function () {
    var $t = $(this);
    $t.data(v);
    console.log(this, $t, $t.data());
});
console.log($('#id1').data());
console.log('p.data', p.data());