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Events.html
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Events.html
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<!DOCTYPE html>
<!--
Events
-->
<meta name="robots" content="noindex">
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
<style>
.background-color {
background: orange;
border: 1px solid black;
}
.green {
background: green;
}
</style>
<script>
document.addEventListener("DOMContentLoaded", addToLog);
window.addEventListener("load", checkImageSize);
function addToLog() {
console.log("DOM content loaded and parsed!")
const myLog = document.getElementById("log");
myLog.innerHTML += "<h1>Hiiiiii</h1>";
}
function checkImageSize() {
const myImg = document.getElementById("myImg");
console.log("Height: " + myImg.offsetHeight + " " + "width: " + myImg.offsetWidth);
myImg.style.width = "500px";
myImg.style.height = "auto";
myImg.style.borderRadius = "50%";
}
</script>
</head>
<body>
<div id="log">
<img id="myImg" src="https://i.imgur.com/8Ax4vyu.jpg" />
</div>
<div id="clicky">
Test text
<button>Click here!</button>
</div>
<div id="background">
<h2>I am size H2 header!</h2>
<ul>
<li>Item 1</li>
<li>Item 2</li>
<li>Item 3</li>
</ul>
</div>
<div id="div2">
<form id="myForm" method="post">
<input id="myInput"/><br/>
<button type="submit">Submit</button>
</form>
</div>
<div id="div3">
<p></p>
<textarea></textarea>
</div>
<script id="jsbin-javascript">
// Events
/*
- Any event that takes place in the DOM
- Can be user-generated or by an API
- Many types of events
- Event contains properties and methods
- addEventListener function takes in the event
to listen for, and a second argument to be
called whenever the described event fires.
- addEventListener("click", function(){
logic inside function
})
*/
const clickDiv = document.getElementById("clicky");
const clickableButton = clickDiv.querySelector("button");
clickableButton.addEventListener("click", logEvent);
// clickableButton.addEventListener("focus", logEvent);
function logEvent(e) {
clickableButton.innerText = e.timeStamp;
clickableButton.removeEventListener("click", logEvent);
console.log(e.type);
}
const bckgrnd = document.getElementById("background");
const listItemsUL = bckgrnd.querySelector("UL");
document.addEventListener("click", switchBackground);
listItemsUL.addEventListener("click", addGreenBackground);
function switchBackground(e) {
const hasBeenClicked = bckgrnd.contains(e.target);
if (hasBeenClicked) {
bckgrnd.classList.add("background-color");
}
else {
bckgrnd.classList.remove("background-color");
}
}
function addGreenBackground(e) {
e.stopPropagation();
const targetLI = e.target;
if (targetLI.nodeName !== "LI") {
return;
}
const green = document.querySelector(".green");
if (green) {
green.classList.remove("green");
}
targetLI.classList.add("green");
}
const div2 = document.getElementById("div2");
const myForm = document.getElementById("myForm");
myForm.addEventListener("submit", addToList);
function addToList(e) {
e.preventDefault();
const myInput = document.getElementById("myInput").value;
const newLI = document.createElement("li");
newLI.innerText = myInput;
listItemsUL.appendChild(newLI);
myForm.reset();
}
const div3 = document.getElementById("div3");
const para = div3.querySelector("p");
const textArea = div3.querySelector("textarea");
const paraText = "User is typing";
let timer;
let count = 0;
textArea.addEventListener("keydown", addText);
textArea.addEventListener("keyup", removeText);
function addText(e) {
para.innerText = paraText;
}
function removeText(e) {
clearTimeout(timer);
timer = setTimeout(() => {
para.innerText = "";
}, 1000)
}
</script>
</body>
</html>