Traversing the DOM
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Selecting Elements with the query selector
document.querySelector('h1'); document.querySelector('.classname'); // will return the 1st item with that class name document.querySelectorAll('.classname'); // will return a array with all items with that class name document.querySelector('#idname');
Creating and Inserting Elements
var p = document.createElement('P'); p.textContent = "A new Paragraph"; p.style.fontSize = '17px'; var li= document.querySelector('li'); li.appendChild(p);
HTML
<body> <h1>Outwter</h1> <ul> <li><a href="#">Link 1</a></li> <li><a href="#">Link 2</a></li> </ul> </body>