cwg_crm_person_front_vu_realse/public/js/preloading.js

window.onload = function () {
  if(this.sessionStorage.getItem("preloading")) return
  let pre = document.getElementById('pre')
  if (!pre) {
    let pre = document.createElement("div")
    pre.setAttribute('id', 'pre')
    pre.setAttribute('style', 'position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 100000; ')
    let cover = document.createElement('div')
    cover.setAttribute('style', 'background-color: rgba(0, 0, 0, .8); width: 100%; height: 100%;')
    let loading = document.createElement('div')
    loading.setAttribute('style', 'position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);')
    let img = document.createElement('img')
    img.setAttribute('src', '/img/loding.jpg')
    loading.appendChild(img)
    cover.appendChild(loading)
    pre.appendChild(cover)
    document.body.appendChild(pre)
  }
  let app = document.createElement("script")
  app.setAttribute("src", "/js/app.8bf2d5f0.js") // 与生成app同步
  document.body.appendChild(app)
  let chunk = document.createElement("script")
  chunk.setAttribute("src", "/js/chunk-vendors.89f16f72.js") // 同步
  document.body.appendChild(chunk)

}