JavaScript『DOM』

(document.getElementById('id');)

document.getElementById('id');

(document.getElementsByTagName('h1');)

document.getElementsByTagName('h1');

(document.getElementsByName('name');)

document.getElementsByName('name');

(document.getElementsByClassName('class');)

document.getElementsByClassName('class');

(document.querySelector('#id');)

document.querySelector('#id');

(document.querySelectorAll('.class');)

document.querySelectorAll('.class');

(li_all=ul.childNodes;)

li_all=ul.childNodes;

(li_0=ul.childNodes[0];)

li_0=ul.childNodes[0];

(ul=li.parentNode;)

ul=li.parentNode;

(li_0=ul.firstChild;)

li_0=ul.firstChild;

(li_last=ul.lastChild;)

li_last=ul.lastChild;

(li_first=second.previousSibling;)

li_first=second.previousSibling;

(third=second.nextSibling;)

third=second.nextSibling;

(document.createElement('ul');)

document.createElement('ul');

(ul.appendChild('li');)

ul.appendChild('li');

(document.createElement('div');)

document.createElement('div');

(const h2=document.getElementsByTagName('h2'); h2[0].innerText='';)

const h2=document.getElementsByTagName('h2'); h2[0].innerText='';

(h2[0].innerHTML='<i>MENU</i>';)

h2[0].innerHTML='<i>MENU</i>';

(h2[1].setAttribute('align','center');)

h2[1].setAttribute('align','center');

(const div1=document.getElementById('div0'); div0.insertAdjacentHTML('beforebegin','<div>div0</div>');)

const div1=document.getElementById('div0'); div0.insertAdjacentHTML('beforebegin','<div>div0</div>');