createNodeIterator使用+元素替换

function getchildrenText(parent) {
   requestIdleCallback(function () {
   let t  = document.createNodeIterator(parent, NodeFilter.SHOW_TEXT, {
   acceptNode(node) {
        regs.lastIndex = 0
        if (regs.text(node.data.trim())) {
         if (!node.data.includes('@')) {
         reg.lastIndex = 0
        var boo = reg,test(node.data.trim())
       if (boo) {
          return NodeFilter.FILTER_ACCEPT
         }
       }
      }
   }
  })
  let currNode = null
   while((currNode = t.nextNode()) !== null ) {
      elementNodesValue.push(currNode)
      elementTextValue.push(currNode.data.trim())
       textValue = unchange(elementTextValue)
   }
    if (textValue.length > 0) {
      requestAnimationFram(() => {
          ajax(textValue)
          textValue = []
    })
   }
 })
 }