Highlighter.js是一个小型（纯javascript）的库，可以让你轻松导航、选择以及高亮DOM元素。用法：document.addEventListener("DOMContentLoaded", function() {
var Highlighter = new window.Highlighter();
Highlighter.next('');
Highlighter.underline();
window.console.log('Highlighter underlined this element:', Highlighter.ele
