JSFiddle - React, Tailwind, and code Playground

by kushmuffin

HTML

<fieldset>
  <legend>
    輸入訂單
  </legend>
  <section>

    <input id="username" type="text" value="" placeholder=" 您的姓名" />

    <select id="genderType">
      <option value="" selected disabled>分類</option>
      <option value="male">男裝</option>
      <option value="female">女裝</option>
    </select>

    <select id="clothesType">
      <option value="" selected disabled>類型</option>
      <option value="coat">外套</option>
      <option value="jacket">上衣</option>
      <option value="Pants">下身</option>
    </select>

    <input id="clothesCount" value="" type="number" min="0" placeholder=" 訂購數量">

    <div>
      <button class="btn" onclick="order()">我想訂購</button>
      <button class="btn" onclick="aboutUs()">認識工廠</button>
    </div>

    <div class="list">
      <span>您的訂單</span>
      <br>
      <span>顧客姓名：</span><span id="user"></span>
      <br>
      <span>服裝分類：</span><span id="gender"></span>
      <br>
      <span>服裝類型：</span><span id="clothes"></span>
      <br>
      <span>訂購數量：</span><span id="count"></span>
      <br>
      <span>初步估價：</span><span id="price"></span>
    </div>
  </section>
</fieldset>

CSS

* {
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
}

fieldset {
  padding: 1em;
  width: 50%;
  border: 1px solid rgba(0, 0, 255, 0.5);
  border-radius: 0.5em;
}

section {
  display: flex;
  flex-direction: column;
  align-items: center;
}

select {
  display: block;
  margin: 0.3rem;
  padding: 3px;
  border: 1px solid gray;
  border-radius: 5px;
  width: 70%;
}

input {
  display: block;
  margin: 0.3rem;
  padding: 3px;
  border: 1px solid gray;
  border-radius: 5px;
  width: 70%;
}

.btn {
  margin: 5px;
  padding: 5px;
  border: 0.5px;
  border-radius: 10px;
}

.btn:hover {
  color: white;
  background-color: gray;
  transform: translateX(5px);
  transition: transform 0.4s linear 0s;
}

.list {
  width: 60%;
  padding: 0.5rem;
  background-color: lightgray;
  border-radius: 5px;
}

JavaScript

function order() {
	//名稱
  let name = document.getElementById('username').value;
	//服裝分類
  let gender = document.getElementById('genderType');
  let genderIndex = gender.selectedIndex;
  let genderValue = gender.options[genderIndex].value;
  let genderText = gender.options[genderIndex].text;
	//服裝類型
  let typesIndex =
    document.querySelector("#clothesType").selectedIndex;
  let typesText =
    document.querySelector("#clothesType").options[typesIndex].text;
  let typesValue =
    document.querySelector("#clothesType").options[typesIndex].value;
	//訂購數量
	let countIndex = 
    document.querySelector("#clothesCount").value;
  let clothesCount = document.getElementById('clothesCount').value;

	//判斷男女裝
	/* if(genderText == gender.option[1].value){
	    let menPrice = 600;
	  } else if(genderText == gender.option[2].value){
	    let womenPrice = 500;
	  }	 */
  
	//計算
  let price = calculation();
  	valuation = price * parseInt(countIndex)

  if (name == "") {
    alert("煩請填寫您的大名")
  } else if (gender == "" || typesIndex == "") {
    alert("請選擇分類及類型")
  } else if(countIndex < 100){
  	alert("抱歉，我們工廠的最低出貨量是 100 件")
  } else if(countIndex > 5000){
  	alert("抱歉，我們工廠的最高出貨量是 5000 件")
  } else {
    alert(name + '您好！\n謝謝您對我們的衣服有興趣！請致電 0987-654-321，會有專人提供您報價！');
    if (genderValue == "male") {
      alert('最近剛好是工廠週年慶，只要您今天來電下單，我們將贈送您帥氣領帶！')
    } else if (genderValue == "female") {
      alert('最近剛好是工廠週年慶，只要您今天來電下單，我們將贈送您美麗圍巾！')
    }
    alert('您的姓名：' + name + '\n服裝分類：' + genderText + '\n服裝類型：' + typesText + '\n訂購數量：' + countIndex + '\n初步估價：' + valuation);


		/* alert */
    document.getElementById('user').textContent = name;
    document.getElementById('gender').textContent = genderText;
    /* document.querySelector("#clothes").textContent = typesText; */
    document.getElementById('clothes').textContent = typesText;
    document.getElementById('count').textContent = countIndex;
    document.getElementById('price').textContent = valuation;
  }
}
//認識工廠
function...