JSFiddle - React, Tailwind, and code Playground

HTML

<button class="blink" style="width:100px;height:23px;">blinking</button>

JavaScript

blink_state = 0;
$(function(){
    window.setInterval(blink,500);
});
function blink(){
    if(blink_state==0){
        $(".blink").text("blinking");
        blink_state=1;
    }
    else{
        $(".blink").text("");
        blink_state=0;
    }
}