JSFiddle - React, Tailwind, and code Playground

HTML

<button>Click to change to erase</button>

JavaScript

var erasing = false;
var i = 0
$("button").click(function () {
    if(i%2==0){
        $(this).text("Click to change to paint brush");
        erasing = true;
    }
    else{
        $(this).text("Click to change to eraser");
        erasing = false;
    };
    i += 1
  });