queryselector header ul code example
Example 1: queryselector function in javascript
/*The querySelector() method returns the first element that matches a specified
CSS selector(s) in the document. Note: The querySelector() method only returns
the first element that matches the specified selectors. To return all the
matches, use the querySelectorAll() method instead.*/
// for example
//for class
document.querySelector(".ClassName")
// for id
document.querySelector("#ID")
// etc.
Example 2: 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")