Question

var sentence = 'The quick brown fox jumped over the lazy dog.';

var word = ['fox'];

console.log('The word "' + word + (sentence.includes(word)? '" is' : '" is not') + ' in the sentence');
// expected output: "The word "fox" is in the sentence"

这是Javascript文档中的String.includes()，但我想做的是这样的：

var sentence = 'The quick brown fox jumped over the lazy dog.';
var word = ['fox', 'dog'];

console.log('The word "' + word + (sentence.includes(word)? '" is' : '" is not') + ' in the sentence');

我想测试该句子的字符串数组，如果该数组中的字符串之一在句子中，则返回true。但是如您在摘要中所见，它不起作用。

Answer 1

我假设它为变量word中的每个项目打印就像

 "The word "fox" is in the sentence"
 "The word "dog" is not in the sentence"

你可以

var sentence = 'The quick brown fox jumped over the lazy dog.';
var word = ["fox", "dog"]

function test(word) {
  console.log('The word "' + word + (sentence.includes(word) ? '" is' : '" is not') + ' in the sentence');
}
word.map((item) => {
  return test(item)
})

Answer 2

请尝试使用此选项，如果var word中的一个与句子不匹配，则返回false，否则如果包含所有内容，则返回true。

var sentence = 'The quick brown fox jumped over the lazy dog.'
var word = ["fox", "the", "lol"]

var initialReturn = true

check = (word) => {
  !sentence.includes(word) ? initialReturn = false : null
}

word.map(item => {
  return check(item)
})


console.log("initialReturn", initialReturn)

Answer 3

var sentence = 'The quick brown fox jumped over the lazy dog.';
var word = ['fox', 'dog'];

console.log('The word "' + word + (sentence.split(' ').some(d => word.includes(d)) ? '" is' : '" is not') + ' in the sentence');

Answer 4

检查这段代码。我学到了使用弦乐的一件重要事情。正则表达式可以帮助您（但是很麻烦）并在您使用框架时使用扩展（函数，帮助器）。但是，如果您使用本机js indexOf会有所帮助。我更新了我的答案。

var sentence = 'The quick brown fox jumped over the lazy dog.';
var words = ['fox', 'dog'];

console.log('The words: "' + words + (sentence.split(/[ ,.]/).some(function(e) { return words.indexOf(e) >= 0 })? '" is' : '" is not') + ' in the sentence');

字符串包括：测试字符串数组中的单词

4 个答案: