<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-4bw+/aepP/YC94hEpVNVgiZdgIC5+VKNBQNGCHeKRQN+PtmoHDEXuppvnDJzQIu9" crossorigin="anonymous">
<link rel="stylesheet" href="style.css">
<title>Document</title>
</head>
<body>
<form class="container my-5 form-group">
<p>상품선택</p>
<select name="" id="" class="form-select mt-2">
<option value="0">선택하세요</option>
<option value="1">모자</option>
<option value="2">셔츠</option>
</select>
<select name="" id="" class="form-select mt-2 select_product form-hide">
<option value="">선택하세요</option>
<option value="">free-size</option>
</select>
<select name="" id="" class="form-select mt-2 select_product form-hide">
<option value="">선택하세요</option>
<option value="">95</option>
<option value="">100</option>
<option value="">105</option>
</select>
</form>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.1/dist/js/bootstrap.bundle.min.js" integrity="sha384-HwwvtgBNo3bZJJLYd8oVXjrBZt8cqVSpeBNS5n7C8IVInixGAoxmnlMuBnhbgrkm" crossorigin="anonymous"></script>
<script src="main.js"></script>
</body>
</html>
const main_products = document.querySelector(".form-select");
const select_products = document.querySelectorAll(".form-select");
main_products.addEventListener("change", function () {
const value = this.value;
for (let i = 1; i < select_products.length; i++) {
if (value == 0) {
document.querySelectorAll(".select_product").forEach((products) => {
products.classList.add("form-hide");
});
} else if (value == i) {
document.querySelectorAll(".select_product").forEach((products) => {
products.classList.add("form-hide");
});
select_products[i].classList.remove("form-hide");
}
}
});
선생님 저는 우선 저는 자바스크립트로만 하는걸 연습중인데 저렇게 코드를 작성해도 괜찮을까요??
