HTML

  <div>
    <h1 style="text-align: center">課程表</h1>
    <div class="container">
      <div class="left" data-drop="move">
        <!-- draggable="true"實(shí)現(xiàn)可拖拽 -->
        <div data-effect="copy" draggable="true" class="color1 item">語文</div>
        <div data-effect="copy" draggable="true" class="color2 item">數(shù)學(xué)</div>
        <div data-effect="copy" draggable="true" class="color3 item">英語</div>
        <div data-effect="copy" draggable="true" class="color4 item">政治</div>
        <div data-effect="copy" draggable="true" class="color5 item">歷史</div>
        <div data-effect="copy" draggable="true" class="color6 item">地理</div>
        <div data-effect="copy" draggable="true" class="color7 item">物理</div>
      </div>
      <div class="right">
        <table>
          <tr>
            <th>周一</th>
            <th>周二</th>
            <th>周三</th>
            <th>周四</th>
            <th>周五</th>
            <th>周六</th>
            <th>周日</th>
          </tr>
          <tr>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
          </tr>
          <tr>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
          </tr>
          <tr>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
          </tr>
          <tr>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
          </tr>
          <tr>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
          </tr>
          <tr>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
            <td data-drop="copy"></td>
          </tr>
        </table>
      </div>
    </div>
  </div>

CSS

    .color1 {
      background-color: pink;
    }

    .color2 {
      background-color: greenyellow;
    }

    .color3 {
      background-color: burlywood;
    }

    .color4 {
      background-color: orangered;
    }

    .color5 {
      background-color: orange;
    }

    .color6 {
      background-color: purple;
    }

    .color7 {
      background-color: peru;
    }

    .container {
      display: flex;
      margin: 50px;
    }

    .left {
      background-color: rgba(223, 223, 216, 0.867);
      padding: 30px 5px;
    }

    .item {
      width: 60px;
      height: 40px;
      text-align: center;
      line-height: 40px;
      border: 1px solid #000;
      margin: 5px 0;
    }

    .right {
      margin-left: 50px;
      box-sizing: border-box;
      background-color: rgba(192, 192, 186, 0.867);
    }

    table {
      border: 1px solid black;
    }

    th {
      width: 60px;
      height: 40px;
      padding: 10px;
      margin: 2px;
      line-height: 40px;
      border-radius: 2px;
    }

    td {
      width: 60px;
      height: 40px;
      padding: 10px;
      margin: 2px;
      border-radius: 2px;
      background-color: #fff;
    }

    .drop-over {
      background-color: rgba(192, 192, 186, 0.867);
    }

JS文章來源地址http://www.zghlxwxcb.cn/news/detail-724675.html

// 父級事件委托
const container = document.querySelector('.container')

// // 開始拖拽(只觸發(fā)一次)
// // e.target拖拽元素
// container.ondragstart = (e) => {
//   console.log('start', e.target)
// }

// // 拖拽到了哪個元素上(頻繁觸發(fā)-350ms)
// // e.target拖拽到了哪個元素之上
// container.ondragover = (e) => {
//   // console.log('over', e.target)
// }

// // 拖拽到了哪個元素上(拖拽到對應(yīng)元素只觸發(fā)一次)
// // e.target拖拽到了哪個元素之上
// container.ondragenter = (e) => {
//   console.log('enter', e.target)
// }

// // 松開鼠標(biāo)時拖拽到哪個元素上
// // e.target拖拽到了哪個元素之上
// container.ondrop = (e) => {
//   console.log('drop', e.target)
// }
// // 直接使用無法觸發(fā)該事件 因?yàn)闉g覽器默認(rèn)行為不支持拖拽到元素上
// // 因此要阻止默認(rèn)行為
// container.ondragover = (e) => {
//   e.preventDefault()
// }

let source
// 功能實(shí)現(xiàn)
container.ondragstart = (e) => {
  // 設(shè)置拖拽時鼠標(biāo)狀態(tài)，取自定義屬性
  e.dataTransfer.effectAllowed = e.target.dataset.effect

  source = e.target
}

container.ondragover = (e) => {
  e.preventDefault()
}

function clearDropStyle() {
  document.querySelectorAll('.drop-over').forEach((node) => {
    node.classList.remove('drop-over')
  })
}

// 之前的代碼在實(shí)現(xiàn)的時候，只考慮了該元素拖拽到空白元素的場景
// 但是拖拽到同級元素，也要找到父元素進(jìn)行替換，直到找到存在drop
function getDropNode(node) {
  while (node && !node.dataset?.drop) {
    node = node.parentNode
  }
  return node
}

container.ondragenter = (e) => {
  // 清除之前的樣式
  clearDropStyle()
  const dropNode = getDropNode(e.target)
  // 當(dāng)目標(biāo)元素的自定義屬性drop等于目前拖動元素屬性時，代表該節(jié)點(diǎn)接受拖拽
  if (dropNode && dropNode.dataset.drop === e.dataTransfer.effectAllowed) {
    // 當(dāng)拖拽元素移入時，添加陰影
    dropNode.classList.add('drop-over')
  }
}

container.ondrop = (e) => {
  clearDropStyle()
  const dropNode = getDropNode(e.target)
  if (dropNode && dropNode.dataset.drop === e.dataTransfer.effectAllowed) {
    if (dropNode.dataset.drop === 'copy') {
      dropNode.innerHTML = ''
      const cloned = source.cloneNode(true)
      // 復(fù)制過后的節(jié)點(diǎn)改為move屬性
      cloned.dataset.effect = 'move'
      dropNode.appendChild(cloned)
    } else {
      // 拖回去刪除該節(jié)點(diǎn)
      source.remove()
    }
  }
}

到了這里，關(guān)于前端drag api課程表demo的文章就介紹完了。如果您還想了解更多內(nèi)容，請?jiān)谟疑辖撬阉鱐OY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！