'use strict';var tl = document.getElementById('test-list');var new_list = [];for (let i=0;i<tl.children.length;i++){    new_list.push(tl.children[i].innerHTML);}new_list.sort();tl.innerHTML = '';for (let j=0;j<new_list.length;j++){    let tmp = document.createElement('li');    tmp.style.class = 'lang';    tmp.innerHTML = new_list[j];    tl.appendChild(tmp);}