JSFiddle - React, Tailwind, and code Playground

HTML

<body>
<textarea id="text"></textarea>
<input type="checkbox" name="check" id="blinkchk" value="Blink" />Blink
</body>

CSS

#text{
    transition:all 0.5s;
    -moz-transition:all 0.5s;
    -webkit-transition:all 0.5s;
    -o-transition:all 0.5s;
    -ms-transition:all 0.5s;
}

JavaScript

$(function(){
$("#blinkchk").click(function(){
    setInterval(function(){
        $('#text').css('color','transparent');
        setTimeout(function(){
            $('#text').css('color','black');
        },500);
    },1000);
});
    });