从另一个数组中的条件替换数组中的元素

Question

我正在使用 Javascript 从另一个数组中的条件替换数组中的元素。我还需要最终输出以从任何被替换的元素中删除“”。

我有一个数组 tagArray，它为给定的句子生成词性 theSentenceToCheck，它看起来像这样。

tagArray DET,ADJ,NOUN,VERB,ADP,DET,ADJ, NOUN ,ADP,DET,ADJ,NOUN

theSentenceToCheck The red book is in the brown shelf in a red house

我能够编写一些有效的东西并生成所需的输出，但它有点冗余和完全意大利面条。我查看了类似的问题并尝试了其他使用 filter、map 的方法但没有成功，特别是关于如何使用这些方法并删除替换元素的“”。

这是我的方法

var grammarPart1 = "NOUN";
var grammarPart2 = "ADJ";
var posToReplace = 0;

function assignTargetToFillIn(){
   var theSentenceToCheckArrayed = theSentenceToCheck.split(" ");
   var results = [];
     var idx = tagArray.indexOf(grammarPart1);
     var idx2 = tagArray.indexOf(grammarPart2);
   while (idx != -1 || idx2 != -1) {
      results.push(idx);
      results.push(idx2)
      idx = tagArray.indexOf(grammarPart1, idx + 1);
      idx2 = tagArray.indexOf(grammarPart2, idx2 + 1);
      posToReplace = results;
    
}
const iterator = posToReplace.values();
for (const value of iterator) {
    theSentenceToCheckArrayed[value] ="xtargetx";
  }
  var addDoubleQuotesToElements = "\"" + theSentenceToCheckArrayed.join("\",\"") + "\"";
  var addDoubleQuotesToElementsArray = addDoubleQuotesToElements.split(",");
/**This is where I remove the "" from element replaced with xtargetx*/
 const iterator2 = posToReplace.values();
  for (const value of iterator2) {
    addDoubleQuotesToElementsArray[value] ="xtargetx";
   console.log(value);
  }
  
return results;

}

这给了我想要的输出 "The",xtargetx,xtargetx,"is","in","the",xtargetx,xtargetx,"in","a",xtargetx,xtargetx

我想知道什么是更优雅的解决方案或关于其他 JS 函数的指针。

Answer 1

利用数组方法执行此操作的更惯用的正确方法可能是这样的。

Array.split(" ") 将句子拆分为单词
Array.filter(word => word.length) 删除长度为零的任何值
Array.map((word, index) => {...}) 遍历数组并允许您跟踪当前索引值
Array.includes(element) 只是测试数组是否包含值
Array.join(' ') 与 Array.split(' ')

const tagArray = ["DET", "ADJ", "NOUN", "VERB", "ADP", "DET", "ADJ", "NOUN", "ADP", "DET", "ADJ", "NOUN"];

//  Split on spaces and remove any zero-length element (produced by two spaces in a row) 
const sentanceToCheck = "The red book  is  in the brown shelf in  a  red house".split(" ").filter(word => word.length);

const replaceTokens = ["ADJ", "NOUN"];

const replacementWord = "XXX";

const maskedSentance = sentanceToCheck.map((word, index) => {
  const thisTag = tagArray[index];
  
  if ( replaceTokens.includes(thisTag) ) {
    return replacementWord;
  } else {
    return word;
  }
  
}).join(' ');

console.log( maskedSentance );

从另一个数组中的条件替换数组中的元素

Replace element in Array from condition in another array

javascript

arrays

replace