javascript - Word 段落对象的搜索方法不起作用

Question

我有一个段落对象的 paragraphsArray 。我有一些段落和关键字的索引keywordRanges。我正在尝试迭代keywordRanges 并从段落对象中获取关键字的RangeObject。

但是代码在第一次迭代后失败并出现以下错误:PropertyNotLoaded:属性“items”不可用。在读取属性值之前，请在包含对象上调用 load 方法，并在关联的请求上下文上调用“context.sync()”。

引用代码:

var myObject = {
  "2":{
    "keywords":["the","which","eye"]
  },
  "4":{
    "keywords":["lorem","ipsum"]
  },
  "9":{
    "keywords":["hellow","world","foo","bar"]
  }
},
paragraphsArray = [],
keywordRanges = []

Word.run((context) => {

  // Create a proxy object for the document body.
  var paragraphs = context.document.body.paragraphs

  // Queue a commmand to get the OOXML contents of the body.
  context.load(paragraphs, 'text, font, style');

  // Synchronize the document state by executing the queued commands,
  // and return a promise to indicate task completion.
  return context.sync()
  .then(() => {
    // push paragraph range objects to an array
    for (var i = 0; i < paragraphs.items.length; i++) {
      paragraphsArray.push(paragraphs.items[i]) 
    }

    $.each(myObject, (key, value) => {
      $.each(value.keywords, (idx, keyword) => {
        // add the paragraph range object for the corresponding keyword to an array
        var obj = {range:paragraphsArray[key], keyword:keyword}
        keywordRanges.push(obj);
      })
    })
  })
  .then(()=>{
    if(keywordRanges.length > 0){
       $.each(keywordRanges, (idx, obj) =>{

        // search keyword in the paragraph range object
        // obj.range is Paragraph Range object
        var searchKeywordResults = obj.range.search(obj.keyword, { matchWholeWord: true})
        context.load(searchKeywordResults, 'text, font')

        return context.sync().then(() => {
          for (var i = 0; i < searchKeywordResults.items.length; i++) {
            console.log(searchKeywordResults.items[i])
          }
        })
      })
    }
  })
})

Answer 1

循环中有一个 context.sync，后面跟着一个 then()，这意味着循环的每次迭代都有一个新的 Promise 链。所有的 promise 都必须在 Word.run() 结束之前得到解决。