javascript - 使用 .filter 比较两个数组并返回不匹配的值

Question

我在比较两个数组的元素和过滤掉匹配值时遇到了一些问题。我只想返回未包含在 wordsToRemove 中的数组元素。

var fullWordList = ['1','2','3','4','5'];
var wordsToRemove = ['1','2','3'];

var filteredKeywords = fullWordList.forEach(function(fullWordListValue) {
    wordsToRemove.filter(function(wordsToRemoveValue) {
        return fullWordListValue !== wordsToRemoveValue
    })
});

console.log(filteredKeywords);

Answer 1

您可以使用 filter和 includes实现这一目标:

var fullWordList = ['1','2','3','4','5'];
var wordsToRemove = ['1','2','3'];

var filteredKeywords = fullWordList.filter((word) => !wordsToRemove.includes(word));

console.log(filteredKeywords);