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Add cart.js #829

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Add cart.js #829

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72 changes: 20 additions & 52 deletions cart.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ function addItemToCart() {
const addToCart = function(name, price){
let cartItems = localStorage.getItem('cartItems');
cartItems = cartItems ? JSON.parse(cartItems) : [];
if(name==null && price==null) return;
if(name == null || price == null) return;
const existingItem = cartItems.find(item => item.name === name);
if (!existingItem) {
cartItems.push({ name, price });
Expand All @@ -17,7 +17,6 @@ const addToCart = function(name, price){

updateCartDisplay();
calculateBill();

}

const updateCartDisplay = function() {
Expand All @@ -39,63 +38,32 @@ const updateCartDisplay = function() {
});
}


// calculate total bill amount
let total = 0;
const calculateBill = ()=>{
itemPrices = document.querySelectorAll(".price");
for (p of itemPrices){
if (p!=null){
console.log(p.innerText);
total += parseFloat(p.innerText.replace('$',''));
const calculateBill = () => {
total = 0; // Reset total for each calculation
const itemPrices = document.querySelectorAll(".price");
itemPrices.forEach(p => {
if (p) {
total += parseFloat(p.innerText.replace('$', ''));
}
}
});

console.log(total);
if(total!=0 && !isNaN(total)){
document.getElementById("bill").innerText = "$" + total.toFixed(2)
if (total !== 0 && !isNaN(total)) {
document.getElementById("bill").innerText = "$" + total.toFixed(2);
}

}

document.addEventListener('DOMContentLoaded', function () {
addItemToCart();
updateCartDisplay(); // Update the display on page load
calculateBill(); // Calculate the total on page load
});

let orderBtn = document.querySelector(".butt");
orderBtn.addEventListener("click", ()=>{
if(total==0){
alert("Please add something in the cart to place the order");
}
else{

alert("Order placed!");
}
})

// Prioritizing Image Loading
<script>
// Critical images
const criticalImages = document.querySelectorAll('.critical-image');

// Lazy load other images
const lazyImages = document.querySelectorAll('img[data-src]');

// Load critical images immediately
criticalImages.forEach(image => {
image.src = image.dataset.src;
});

// Use Intersection Observer for lazy loading
const observer = new IntersectionObserver(entries => {
entries.forEach(entry => {
if (entry.isIntersecting) {
entry.target.src = entry.target.dataset.src;
observer.unobserve(entry.target);
}
});
});

lazyImages.forEach(image => observer.observe(image));
</script>

const orderBtn = document.querySelector(".butt");
orderBtn.addEventListener("click", () => {
if (total === 0) {
alert("Please add something in the cart to place the order");
} else {
alert("Order placed!");
}
});