js电影票选位置

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html

css

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html

<div class="movie-container">
    <label>挑选电影</label>
    <select id="movie">
            <option value='8'>白蛇:缘起 - $8</option>
            <option value='8'>罗小黑战记 - $8</option>
            <option value='8'>送我上青云 - $8</option>
            <option value='10'>大象席地而坐 - $10</option>
        </select>
</div>

css

@import url('https://fonts.googleapis.com/css2?family=Lato&display=swap');

* {
    box-sizing: border-box;
}

body {
    background-color: #242333;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    font-family: 'Lato', sans-serif;
    margin: 0;
}

.movie-container {
    margin: 20px 0;
}

.movie-container select {
    background-color: white;
    border: 0;
    border-radius: 5px;
    font-size: 14px;
    margin-left: 10px;
    padding: 5px 15px 5px 15px;
    -moz-appearance: none;
    -webkit-appearance: none;
    appearance: none;
}

.container {
    perspective: 1000px;
    margin-bottom: 30px;
}

.seat {
    background-color: #444451;
    height: 12px;
    width: 15px;
    margin: 3px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

.seat.selected {
    background-color: #6feaf6;
}

.seat.occupied {
    background-color: #fff;
}

.seat:nth-of-type(2) {
    margin-right: 10px;
}

.seat:nth-last-of-type(2) {
    margin-left: 10px;
}

.seat:not(.occupied):hover {
    cursor: pointer;
    transform: scale(1.2);
}

.showcase .seat:not(.occupied):hover {
    cursor: pointer;
    transform: scale(1);
}

.showcase {
    background: rgba(0, 0, 0, 0.1);
    padding: 5px 10px;
    border-radius: 5px;
    color: #777;
    list-style-type: none;
    display: flex;
    justify-content: space-between;
}

.showcase li {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 10px;
}

.showcase li small {
    margin-left: 2px;
}

.row {
    display: flex;
}

.screen {
    background-color: white;
    height: 70px;
    width: 100%;
    margin: 15px 0;
    transform: rotateX(-45deg);
    box-shadow: 0 3px 10px rgba(255, 255, 255, 0.7)
}

p.text {
    margin: 5px 0;
}

p.text span {
    color: #6feaf6;
}

JavaScript

const container = document.querySelector('.container');
const seats = document.querySelectorAll('.row .seat:not(.occupied)');
const count = document.getElementById('count');
const total = document.getElementById('total');
const movieSelect = document.getElementById('movie');

populateUI();

let ticketPrice = +movieSelect.value;

//save selected movie index and price
function setMovieData(movieIndex, moviePrice){
    localStorage.setItem('selectedMovieIndex', movieIndex);
    localStorage.setItem('selectedMoviePrice', moviePrice);
}

//update total and count
function updateSelectedCount() {
    const selectedSeats = document.querySelectorAll('.row .seat.selected');

const seatsIndex = [...selectedSeats].map(seat => [...seats].indexOf(seat));

localStorage.setItem('selectedSeats', JSON.stringify(seatsIndex));

const selectedSeatsCount = selectedSeats.length;

count.innerText = selectedSeatsCount;
    total.innerText = selectedSeatsCount * ticketPrice;
}

//get data from local storage & populate UI
function populateUI() {
    const selectedSeats = JSON.parse(localStorage.getItem('selectedSeats'));

if (selectedSeats !== null && selectedSeats.length > 0) {
        seats.forEach((seat, index) => {
          if (selectedSeats.indexOf(index) > -1) {
            seat.classList.add('selected');
          }
        });
      }

const selectedMovieIndex = localStorage.getItem('selectedMovieIndex');

if (selectedMovieIndex !== null) {
        movieSelect.selectedIndex = selectedMovieIndex;
    }
}

//movie select event
movieSelect.addEventListener('change', e => {
    ticketPrice = +e.target.value;
    setMovieData(e.target.selectedIndex, e.target.value)
    updateSelectedCount();
});

//seat click event
container.addEventListener('click', e => {
 if (e.target.classList.contains('seat') && !e.target.classList.contains('occupied'))
 {
    e.target.classList.toggle('selected');
    
    updateSelectedCount();
 }
});

//initial count and total set
updateSelectedCount();

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