JSFiddle - React, Tailwind, and code Playground

HTML

<button id="click-button">test</button>

JavaScript

var flag = 1;
$("#click-button").click(function(){
    if(flag == 2){
        secondClick(); flag = 1;
    }else{
        firstClick(); flag = 2;
    }
});

function firstClick(){
    alert("First Click.");
}

function secondClick(){
    alert("Second Click.")
}