JSFiddle - React, Tailwind, and code Playground

by jun68ykt

HTML

<p class="hi">こんにちは。お元気ですか？</p>

JavaScript

var changeColor = function(className, color) {
    var elems = document.getElementsByClassName(className);

    //文字色変える
    elems[0].style.color =  color;
}

changeColor("hi", "red");