I Try Do

js table拖动排序

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  1. table添加类.draggable-items
  2. 将可拖动的tr写到tbody中
  3. 添加下面js
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    var cloneEl = null
    var currentDragEl = null
    var parentNode = document.querySelector('.draggable-items tbody')
    var trs = parentNode.querySelectorAll('tr')
    trs.forEach(function (el, index) {
      el.setAttribute('draggable', true)
      el.orSeq = index
      el.index = index

      el.onmousedown = function (event) {
        cloneEl = el.cloneNode(true)
        parentNode.insertBefore(cloneEl, el)
        cloneEl.index = el.index
        el.style.display = 'none'
        currentDragEl = el

        cloneEl.onmouseup = currentDragEl.onmouseup = function (event) {
          currentDragEl.index = cloneEl.index
          parentNode.removeChild(currentDragEl)
          parentNode.insertBefore(currentDragEl, cloneEl)
          parentNode.removeChild(cloneEl)
          currentDragEl.style.display = 'table-row'
        }
      }

      el.ondragover = function (event) {
        var nowElIndex = el.index
        if (el.index > cloneEl.index) {
          parentNode.removeChild(cloneEl)
          for (let i = cloneEl.index + 1; i <= el.index; i++) {
            el.index = el.index - 1
          }
          if (parentNode.lastChild === el) {
            parentNode.appendChild(cloneEl)
          } else {
            parentNode.insertBefore(cloneEl, el.nextSibling)
          }
          cloneEl.index = nowElIndex
        } else if (el.index < cloneEl.index) {
          for (let i = el.index; i < cloneEl.index; i++) {
            el.index = el.index + 1
          }
          parentNode.removeChild(cloneEl)
          parentNode.insertBefore(cloneEl, el)
          cloneEl.index = nowElIndex
        }
      }
    })