JSFiddle - React, Tailwind, and code Playground

by Yu Jiangshui

HTML

<button id="btn">点击这里</button>

JavaScript

var btn = document.getElementById('btn');

var fun = function(){
    alert('这个按钮只支持一次点击');
    btn.removeEventListener('click', fun, false);
};

btn.addEventListener('click', fun, false);