JustHTML/Tools/PercentageCalculator.html at main · X-starRelight/JustHTML · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>百分比计算器 - JustHTML 只需网页</title>
  <script>
/**
 * 动态加载（强制去除缓存） CSS 的函数
 * @param {string} src - 要加载的 CSS 的 src 链接
 * @returns {Promise} 返回一个 Promise 对象，用于处理异步加载
 */
function loadStyle(src) {
  return new Promise((resolve, reject) => {
    const link = document.createElement('link');
    link.rel = 'stylesheet';
    link.href = src + '?v=' + new Date().getTime(); // 使用时间戳避免缓存
    link.async = true;
    link.onload = resolve;
    link.onerror = reject;
    document.head.appendChild(link);
  });
}

/**
 * 动态加载（强制去除缓存） JS 的函数
 * @param {string} src - 要加载的 JS 的 src 链接
 * @returns {Promise} 返回一个 Promise 对象，用于处理异步加载
 */
function loadScript(src) {
  return new Promise((resolve, reject) => {
    const script = document.createElement('script');
    script.src = src + '?v=' + new Date().getTime(); // 使用时间戳避免缓存
    script.async = true;
    script.onload = resolve;
    script.onerror = reject;
    document.head.appendChild(script);
  });
}
</script>

  <script>
    loadStyle('../assets/style.css')
    let scriptArray = [
      "../assets/AddHeader_Tools.js",
      "../assets/AddFooter.js",
      "../assets/AddIco.js",
      "../assets/AutoRun.js",
    ]

    scriptArray.forEach(script => {
      loadScript(script);
    });
  </script>

  <script src="../package/Vue/code/vue.global.prod.js"></script>
  <script type="module" src="../package/Sober/code/main.js"></script>

  <style>
    .calculator-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin: 20px 0;
    }

    .calculator-section {
      display: flex;
      flex-direction: column;
    }

    .calculator-section input, .calculator-section select {
      padding: 8px;
      margin-top: 5px;
    }

    .controls {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 15px 0;
    }

    .info-box {
      background-color: var(--bg-tertiary);
      padding: 10px;
      border-radius: var(--border-radius);
      margin: 10px 0;
    }

    .calculation-result {
      margin-top: 20px;
      padding: 15px;
      background-color: var(--bg-tertiary);
      border-radius: var(--border-radius);
      font-size: 1.2em;
      font-weight: bold;
    }

    .examples {
      margin-top: 20px;
      padding: 15px;
      background-color: var(--bg-tertiary);
      border-radius: var(--border-radius);
    }

    .example-item {
      margin: 8px 0;
      padding: 5px;
      background-color: var(--bg-secondary);
      border-radius: 4px;
    }

    @media (max-width: 768px) {
      .calculator-container {
        grid-template-columns: 1fr;
      }
    }
  </style>
</head>
<body>
  <div id="app">
    <div class="container">
      <a href="../index.html" class="back-link">← 返回首页</a>

      <div class="tool-section">
        <h2>百分比计算器</h2>
        <p>计算百分比及相关运算</p>

        <div class="info-box">
          <p><strong>功能说明：</strong></p>
          <p>• 计算一个数是另一个数的百分之几</p>
          <p>• 计算一个数的百分之几是多少</p>
          <p>• 计算两数之间的百分比变化</p>
          <p>• 计算增加或减少百分之几后的数值</p>
        </div>

        <div>
          <div class="calculator-container">
            <div class="calculator-section">
              <label for="calculationType">计算类型</label>
              <select id="calculationType" v-model="calculationType">
                <option value="percentageOf">计算 X 的 Y% 是多少</option>
                <option value="whatPercent">计算 X 是 Y 的百分之几</option>
                <option value="percentChange">计算从 X 到 Y 的百分比变化</option>
                <option value="percentIncrease">计算 X 增加 Y% 后的值</option>
                <option value="percentDecrease">计算 X 减少 Y% 后的值</option>
              </select>

              <div v-if="calculationType === 'percentageOf'">
                <label for="number1">数值 (X)</label>
                <input
                  type="number"
                  id="number1"
                  v-model.number="number1"
                  placeholder="输入数值"
                >

                <label for="percentage">百分比 (Y%)</label>
                <input
                  type="number"
                  id="percentage"
                  v-model.number="percentage"
                  placeholder="输入百分比"
                >
              </div>

              <div v-else-if="calculationType === 'whatPercent'">
                <label for="number1">部分值 (X)</label>
                <input
                  type="number"
                  id="number1"
                  v-model.number="number1"
                  placeholder="输入部分值"
                >

                <label for="number2">总数值 (Y)</label>
                <input
                  type="number"
                  id="number2"
                  v-model.number="number2"
                  placeholder="输入总数值"
                >
              </div>

              <div v-else-if="calculationType === 'percentChange'">
                <label for="number1">初始值 (X)</label>
                <input
                  type="number"
                  id="number1"
                  v-model.number="number1"
                  placeholder="输入初始值"
                >

                <label for="number2">新值 (Y)</label>
                <input
                  type="number"
                  id="number2"
                  v-model.number="number2"
                  placeholder="输入新值"
                >
              </div>

              <div v-else-if="calculationType === 'percentIncrease'">
                <label for="number1">初始值 (X)</label>
                <input
                  type="number"
                  id="number1"
                  v-model.number="number1"
                  placeholder="输入初始值"
                >

                <label for="percentage">增加百分比 (Y%)</label>
                <input
                  type="number"
                  id="percentage"
                  v-model.number="percentage"
                  placeholder="输入增加百分比"
                >
              </div>

              <div v-else-if="calculationType === 'percentDecrease'">
                <label for="number1">初始值 (X)</label>
                <input
                  type="number"
                  id="number1"
                  v-model.number="number1"
                  placeholder="输入初始值"
                >

                <label for="percentage">减少百分比 (Y%)</label>
                <input
                  type="number"
                  id="percentage"
                  v-model.number="percentage"
                  placeholder="输入减少百分比"
                >
              </div>
            </div>

            <div class="calculator-section">
              <label>计算公式</label>
              <div class="result" style="padding: 10px; margin-top: 5px;">
                <p>{{ formula }}</p>
              </div>

              <label>计算结果</label>
              <div class="result" style="padding: 10px; margin-top: 5px;">
                <p>{{ result }}</p>
              </div>
            </div>
          </div>

          <div class="controls">
            <button @click="calculate">计算</button>
            <button @click="clearAll">清空</button>
          </div>

          <div class="calculation-result" v-if="result">
            <p>{{ calculationDescription }}</p>
          </div>

          <div class="examples">
            <h3>计算示例</h3>
            <div class="example-item">200的25%是50 (200 × 0.25 = 50)</div>
            <div class="example-item">50是200的25% (50 ÷ 200 × 100 = 25%)</div>
            <div class="example-item">从100到150的变化是50%增长 ((150-100) ÷ 100 × 100 = 50%)</div>
            <div class="example-item">100增加20%后是120 (100 × (1 + 0.20) = 120)</div>
            <div class="example-item">100减少20%后是80 (100 × (1 - 0.20) = 80)</div>
          </div>
        </div>
      </div>
    </div>
  </div>

  <script>
    const { createApp, ref, computed } = Vue;

    createApp({
      setup() {
        const calculationType = ref('percentageOf');
        const number1 = ref(100);
        const number2 = ref(200);
        const percentage = ref(25);
        const result = ref('');

        // 根据计算类型显示相应公式
        const formula = computed(() => {
          switch(calculationType.value) {
            case 'percentageOf':
              return `${number1.value || 'X'} × ${percentage.value || 'Y%'} = ?`;
            case 'whatPercent':
              return `(${number1.value || 'X'} ÷ ${number2.value || 'Y'}) × 100 = ?%`;
            case 'percentChange':
              return `((${number2.value || 'Y'} - ${number1.value || 'X'}) ÷ ${number1.value || 'X'}) × 100 = ?%`;
            case 'percentIncrease':
              return `${number1.value || 'X'} × (1 + ${percentage.value || 'Y%'}) = ?`;
            case 'percentDecrease':
              return `${number1.value || 'X'} × (1 - ${percentage.value || 'Y%'}) = ?`;
            default:
              return '请选择计算类型';
          }
        });

        // 计算描述
        const calculationDescription = computed(() => {
          switch(calculationType.value) {
            case 'percentageOf':
              return `${number1.value || '?'} 的 ${percentage.value || '?'}% 是 ${result.value}`;
            case 'whatPercent':
              return `${number1.value || '?'} 是 ${number2.value || '?'} 的 ${result.value}`;
            case 'percentChange':
              const changeValue = parseFloat(result.value);
              const changeType = changeValue >= 0 ? '增长' : '减少';
              return `从 ${number1.value || '?'} 到 ${number2.value || '?'} ${changeType}了 ${Math.abs(changeValue)}%`;
            case 'percentIncrease':
              return `${number1.value || '?'} 增加 ${percentage.value || '?'}% 后是 ${result.value}`;
            case 'percentDecrease':
              return `${number1.value || '?'} 减少 ${percentage.value || '?'}% 后是 ${result.value}`;
            default:
              return '计算结果';
          }
        });

        // 执行计算
        const calculate = () => {
          if (isNaN(number1.value) || number1.value === '') {
            result.value = '请输入有效的数值';
            return;
          }

          switch(calculationType.value) {
            case 'percentageOf':
              if (isNaN(percentage.value) || percentage.value === '') {
                result.value = '请输入有效的百分比';
                return;
              }
              result.value = (number1.value * (percentage.value / 100)).toFixed(6);
              break;

            case 'whatPercent':
              if (isNaN(number2.value) || number2.value === '') {
                result.value = '请输入有效的总数值';
                return;
              }
              if (number2.value === 0) {
                result.value = '总数值不能为0';
                return;
              }
              result.value = ((number1.value / number2.value) * 100).toFixed(6) + '%';
              break;

            case 'percentChange':
              if (isNaN(number2.value) || number2.value === '') {
                result.value = '请输入有效的新值';
                return;
              }
              if (number1.value === 0) {
                result.value = '初始值不能为0';
                return;
              }
              const change = ((number2.value - number1.value) / number1.value) * 100;
              result.value = change.toFixed(6) + '%';
              break;

            case 'percentIncrease':
              if (isNaN(percentage.value) || percentage.value === '') {
                result.value = '请输入有效的百分比';
                return;
              }
              result.value = (number1.value * (1 + percentage.value / 100)).toFixed(6);
              break;

            case 'percentDecrease':
              if (isNaN(percentage.value) || percentage.value === '') {
                result.value = '请输入有效的百分比';
                return;
              }
              result.value = (number1.value * (1 - percentage.value / 100)).toFixed(6);
              break;

            default:
              result.value = '请选择计算类型';
          }
        };

        // 清空所有
        const clearAll = () => {
          number1.value = '';
          number2.value = '';
          percentage.value = '';
          result.value = '';
        };

        return {
          calculationType,
          number1,
          number2,
          percentage,
          result,
          formula,
          calculationDescription,
          calculate,
          clearAll
        };
      }
    }).mount('#app');
  </script>
</body>
</html>