字符串包括：测试字符串数组中的单词

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" 

This is the String.includes() in the Javascript docs but what I want to do is something like this:

 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'); 

I want to test an array of strings to the sentence and return true if one of the strings in the array are in the sentence. But as you can see in the snippet, it does not work.

Answer 1

I assume it prints for each item in variable word So like

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

You can do

 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

try this one instead, if one of the var word does not match at the sentence, it'll return false else if everything is included then it will return 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

Check this piece of code. I learned one important thing working with strings. Regular expressions can help you (but it's hell) and use extensions (functions, helpers) in your framework is you're using it. But if you use native js indexOf will help you. I updated my answer a bit.

 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');