“document.QuerySelector” Réponses codées

queryselector JavaScript

//Pretend there is a <p> with class "example"
const myParagraph = document.querySelector('.example');
//You can do many this with is
myParagraph.textContent = 'This is my new text';
Bad Barracuda

DOM QUERYSELLECTEUR

// TO select all the h1 from Html
document.querySelectorAll("h1")

//To select h1 from a particular class or id
document.querySelector(".className/#id h1")
Nasty Narwhal

querysecteur

var el = document.querySelector(".myclass");
Glamorous Gnat

document.QuerySelector

<div id="foo\bar"></div>
<div id="foo:bar"></div>

<script>
  console.log('#foo\bar');               // "#fooar" (\b is the backspace control character)
  document.querySelector('#foo\bar');    // Does not match anything

  console.log('#foo\\bar');              // "#foo\bar"
  console.log('#foo\\\\bar');            // "#foo\\bar"
  document.querySelector('#foo\\\\bar'); // Match the first div

  document.querySelector('#foo:bar');    // Does not match anything
  document.querySelector('#foo\\:bar');  // Match the second div
</script>
Ugliest Unicorn

queryselector JavaScript

document.querySelector('html').onclick = function() {};
Thoughtful Turtle

La méthode .Qqueryselector ()

// Select the first <div>
const firstDiv = document.querySelector('div');
 
// Select the first .button element inside .main-navigation
const navMenu = document.getElementById('main-navigation');
const firstButtonChild = navMenu.querySelector('.button');
Douglas Stemple

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