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09-dom-projects.html
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<!DOCTYPE html>
<html>
<head>
<title>DOM Projects</title>
</head>
<body>
<p>YouTube Subscribe Button</p>
<button onclick ="
subscribe()
" class="js-subscribe-button">
Subscribe </button>
<p>Amazon Shipping Calculator</p>
<!--
<p>Orders under $40 = +$10 shipping.</p>
<p>Orders over $40 = FREE shipping.</p> -->
<input placeholder="Cost of Order" class="js-cost-input" onkeydown="
handleCostKeyDown(event)
"
>
<button onclick="
calculateTotal() ;
">Caluclate</button>
<p class="js-total-cost"></p>
<script>
window
function handleCostKeyDown(event) {
if (event.key === 'Enter') {
calculateTotal();
}
}
function calculateTotal (){
const inputElement = document.querySelector('.js-cost-input');
let cost = Number(inputElement.value);
if (cost < 40) {
cost = cost + 10;
console.log( typeof cost)
}
document.querySelector('.js-total-cost')
.innerHTML = `$${cost}`;
}
function subscribe() {
const buttonElement = document.querySelector('.js-subscribe-button');
if (buttonElement.innerText === 'Subscribe'){
buttonElement.innerText = 'Subscribed'
} else {
buttonElement.innerText = 'Subscribe';
}
}
</script>
</body>
</html>