javascript - 替换字符串中与单独数组中的单词匹配的单词

Question

我试图在字符串中与数组中的一组“过滤”单词匹配的任何单词前面添加 #。

This is what I have so far
let wordsArray = ['she', 'smile'];
let sentence = 'She has a big smile';
let sentenceArray = sentence.split(" ");
wordsArray.forEach((i, vals) => {
    sentenceArray.forEach((j, sVal) => {
        if (sVal === vals) {
            sentenceArray[j] = `#${j}`;
            console.log(sentenceArray)
        }
    })
});

这就是它在控制台中输出的内容。

app.js:17 (5) ["She", "has", "a", "big", "smile", She: "#She"]
 app.js:17 (5) ["She", "has", "a", "big", "smile", She: "#She", has:
 "#has"] app.js:23 She has a big smile

关于我哪里出错了有什么想法吗？

Answer 1

Repl Example

您可以使用Array.map遍历句子中的每个单词，如果匹配则返回带有#符号的单词。

let wordsArray = ['she', 'smile'];
let sentence = 'She has a big smile';
let sentenceArray = sentence.split(" ");
sentenceArray = sentenceArray.map((word) => {
  let matchIndex = wordsArray.indexOf(word.toLowerCase())
  return (matchIndex !== -1)
    ? '#'.concat(word)
    : word
})