target/classes/static/ajax/libs/bootstrap-table/extensions/reorder-columns/bootstrap-table-reorder-columns.js

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/**
 * @author: Dennis Hernández
 * @webSite: http://djhvscf.github.io/Blog
 * @update: https://github.com/wenzhixin
 * @version: v1.2.0
 */

$.akottr.dragtable.prototype._restoreState = function (persistObj) {
  let i = 0

  for (const [field, value] of Object.entries(persistObj)) {
    const $th = this.originalTable.el.find(`th[data-field="${field}"]`)

    if (!$th.length) {
      i++
      continue
    }

    this.originalTable.startIndex = $th.prevAll().length + 1
    this.originalTable.endIndex = parseInt(value, 10) + 1 - i
    this._bubbleCols()
  }
}

// From MDN site, https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
const filterFn = () => {
  if (!Array.prototype.filter) {
    Array.prototype.filter = function (fun/* , thisArg*/) {
      if (this === undefined || this === null) {
        throw new TypeError()
      }

      const t = Object(this)
      const len = t.length >>> 0

      if (typeof fun !== 'function') {
        throw new TypeError()
      }

      const res = []
      const thisArg = arguments.length >= 2 ? arguments[1] : undefined

      for (let i = 0; i < len; i++) {
        if (i in t) {
          const val = t[i]

          // NOTE: Technically this should Object.defineProperty at
          //       the next index, as push can be affected by
          //       properties on Object.prototype and Array.prototype.
          //       But this method's new, and collisions should be
          //       rare, so use the more-compatible alternative.
          if (fun.call(thisArg, val, i, t)) {
            res.push(val)
          }
        }
      }

      return res
    }
  }