what is query selector code example

Example 1: javascript select element with attribute

document.querySelectorAll('[attrname="value"]');

Example 2: queryselector

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

Example 3: 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';

Example 4: javascript querySelector change input value

var element = document.getElementById('element_id');
element.value = 'random_value';

Example 5: queryselector

document.querySelector(".example");