JAVASCRIPT

queryselector

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

javascript queryselector

//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';

javascript dom query selector

const elt = document.querySelector("#myId p.article > a");

queryselector javascript

var element = document.querySelector("#myid .myclass p");

dom queryselector

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

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

queryselector in javascript

// Go to html and find out what type of HTML element you want to select. 
// Is it div, p, h3 or something else? 
// When you know, select it with
document.querySelector();
// querySelector() accepts the name of the element as argument

javascript queryselector

let Element = document.querySelector(".class");

document.queryselector

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

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

  console.log('#fooar');              // "#fooar"
  console.log('#foo\bar');            // "#fooar"
  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>

The .querySelector() Method

// 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');

queryselector

document.querySelector(".example");

js queryselector

const para = document.querySelectorAll('p');

query selector js

element = document.querySelector(sélecteurs);

javascript queryselector

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

when to use getelementbyid and queryselector

The querySelector method lets you retrieve an element using a CSS selector query. The getElementById method retrieves an element by its DOM ID.

queryselector j

querySelector();