JustHTML/Tools/ImageToBase64.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>图片转Base64 - 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>
    .image-preview {
      max-width: 100%;
      max-height: 300px;
      margin: 10px 0;
      border: 1px solid var(--bg-tertiary);
      border-radius: var(--border-radius);
    }

    .controls {
      margin: 15px 0;
    }

    .controls button {
      margin-right: 10px;
      margin-bottom: 10px;
    }
  </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>图片转Base64</h2>
        <p>将本地图片文件转换为Base64编码，方便在网页中直接使用</p>

        <div>
          <input
            type="file"
            accept="image/*"
            @change="handleFileSelect"
            id="imageInput"
          >

          <div class="controls" v-if="imageSrc">
            <button @click="copyBase64">复制Base64编码</button>
            <button @click="downloadAsFile">下载为文本文件</button>
            <button @click="clearImage">清除</button>
          </div>

          <img
            v-if="imageSrc"
            :src="imageSrc"
            alt="预览图片"
            class="image-preview"
          >

          <div class="result" v-if="base64Result">
            <p><strong>Base64编码 (点击复制):</strong></p>
            <textarea
              :value="base64Result"
              readonly
              @click="selectText"
              rows="6"
            ></textarea>
          </div>

          <div class="result" v-if="error" style="color: #ff6b6b;">
            <p><strong>错误:</strong></p>
            <p>{{ error }}</p>
          </div>
        </div>
      </div>
    </div>
  </div>

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

    createApp({
      setup() {
        const imageSrc = ref('');
        const base64Result = ref('');
        const error = ref('');

        const handleFileSelect = (event) => {
          error.value = '';
          const file = event.target.files[0];

          if (!file) {
            return;
          }

          // 检查是否为图片文件
          if (!file.type.match('image.*')) {
            error.value = '请选择有效的图片文件 (JPEG, PNG, GIF等)';
            return;
          }

          // 检查文件大小（限制为5MB）
          if (file.size > 5 * 1024 * 1024) {
            error.value = '文件过大，请选择小于5MB的图片';
            return;
          }

          const reader = new FileReader();

          reader.onload = (e) => {
            imageSrc.value = e.target.result;
            // 移除"data:image/xxx;base64,"前缀部分，只保留Base64编码
            base64Result.value = e.target.result.split(',')[1];
          };

          reader.onerror = () => {
            error.value = '读取文件时出错';
          };

          reader.readAsDataURL(file);
        };

        const copyBase64 = () => {
          if (base64Result.value) {
            navigator.clipboard.writeText(base64Result.value)
              .then(() => {
                alert('Base64编码已复制到剪贴板！');
              })
              .catch(err => {
                console.error('复制失败: ', err);
                error.value = '复制失败，请手动复制';
              });
          } else {
            error.value = '没有可复制的Base64编码';
          }
        };

        const downloadAsFile = () => {
          if (!base64Result.value) {
            error.value = '没有可下载的内容';
            return;
          }

          const blob = new Blob([base64Result.value], { type: 'text/plain' });
          const url = URL.createObjectURL(blob);
          const a = document.createElement('a');
          a.href = url;
          a.download = 'image-base64.txt';
          document.body.appendChild(a);
          a.click();
          document.body.removeChild(a);
          URL.revokeObjectURL(url);
        };

        const clearImage = () => {
          imageSrc.value = '';
          base64Result.value = '';
          error.value = '';
          document.getElementById('imageInput').value = '';
        };

        const selectText = (event) => {
          event.target.select();
        };

        return {
          imageSrc,
          base64Result,
          error,
          handleFileSelect,
          copyBase64,
          downloadAsFile,
          clearImage,
          selectText
        };
      }
    }).mount('#app');
  </script>
</body>
</html>