如何根据特定条件搜索句子并替换？

Question

我的意思是指针：_# _，有针对性的句子：_# some dynamic words _。

我想找一个sentence。

1. if (sentence contained pointer) 然后remove pointer。

const stringVal = "being _#kind_, I am a _#kind_ _#man_, I love _#kind_ people, _#kind_ people is very great";
const searchSentence = "a kind man";

提示： a kind man 包含two pointer，所以我必须remove 它，因为pointers 都存在于searchSentence 中，但其他pointers 会活着，因为它们不在searchSentence。

所以结果是：

stringVal = "being _#kind_, I am a kind man, I love _#kind_ people, _#kind_ people is very great";

我尝试了以下方法：

searchSentence.trim().split(/\b\s+/).forEach(item => {
    stringVal = stringVal.replace(`_#${item}_`, item);
});

我的解决方案只删除存在于stringVal 中的first pointer。

注意：stringVal是动态的，可以改变，所以只考虑条件，searchSentence可能包含one or more pointers，所以都应该去掉。

重要：searchSentence 变量的值，应该在stringVal 值中找到它的精确匹配，然后如果其中存在任何指针，则应将其删除。

Answer 1

不错，我觉得应该可以。

var searchSentence = "kind people is"
var stringVal = "I am a _#kind_ _#man_, I love _#kind_ people, _#kind_ people is very great"
var indeces = []
var stringArray = stringVal.replace(/,/g, ' ,')
 .replace(/_#[a-z]*_/ig, m => m.substr(2, m.length - 3))
 .split(' ')
 .forEach((item, index, all) => { 
    var found = true
    var tmpIndeces = []
    searchSentence.split(' ').forEach((searchItem, index2) => {
      found = found && all[index + index2] === searchItem
      tmpIndeces.push(index + index2)
    })
    if (found) indeces = [...indeces, ...tmpIndeces]
  })

var result = stringVal.replace(/,/g, ' ,').split(' ').map((item, index) => 
  indeces.includes(index) ? item.replace(new RegExp(searchSentence.trim().split(/\b\s+/).map(s => `_#${s}_`).join('|'), 'g'), m => m.substr(2, m.length - 3)) : item)
  .join(' ').replace(/ ,/g, ',')

console.log(result)

Answer 2

您可以尝试以下解决方案。注意 kind sample man 发生的变化。（我认为这是你的要求）

//var searchSentence = "a kind sample man";
//var stringVal = "I am a _#kind_ _#sample_ _#man_, I love _#kind_ people, _#kind_ people is very great. I am also a _#kind_ _#sample_ _#man_.";
 var searchSentence = "kind people is";
 var stringVal = "being _#kind_, I am a _#kind_ _#man_, I love _#kind_ people, _#kind_ people is very great";
searchSentence.trim().split(/\b\s+/).forEach((item, index) => {
    let splitSearch = searchSentence.split(" ")[index + 1];
    stringVal = stringVal.replace(new RegExp(`_?#?${item}_? (?=_?#?${splitSearch}_?)`,'g'), item + " ")
stringVal = stringVal.replace(new RegExp(`(?<=${item} )_?#?${splitSearch}_?`, 'g'), splitSearch);
});
console.log(stringVal)