The Document Object Model (DOM) is the structural representation of the HTML elements arranged in hierarchical way to display a webpage and also making it easy to access and manipulate them. The …

Listening for clicks The first thing we want to do is detect clicks on our [data-password] button. Let’s use the document.querySelector() method to get button and save it to the toggle variable.

Today the latest versions of all major browsers support native methods for element selection like document.querySelector() and document.querySelectorAll(). They allow you to use more complex …

Use querySelector to target the element. Use addEventListener with "click" event type. Create function to execute when event occurs. Use document.createElement() to create a new DOM element. Add …

document.querySelector("p").addEventListener("click", function(event) { event.target.style.color = 'green'; event.target.innerHTML = "I was clicked"; }) …

Handy Alias Functions The following four shorthand functions will be used frequently in the class (to use, make sure they are defined in the module pattern of your JS program). function id(idName) { return …

HTML file: the source text DOM: the live object tree the browser builds from that HTML (JS edits this) What JS can do: Select elements: getElementById, querySelector, querySelectorAll, etc. Change …