Question 171793 in Javascript Question posted in
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How can JS differentiate input words by phrase/keyword?

I am trying to convert/differentiate the input, but it is not working.

this is input – "on time" "flight" and I need to create an output like this – ""ON TIME"FLIGHT"

The Algo is whenever you find a phrase in double quotes you must convert that as ""phrase
and single word should be "word".

code :

const _searchKeyword = req.body.fullTextKeyword;
 const keywords = _searchKeyword.split(' ');

 
const formattedKeywords = keywords.map(keyword => {
  if (keyword.startsWith('"') && keyword.endsWith('"')) {
    // Phrase within double quotes
    const phrase = keyword.slice(1, -1);
    return `\"${phrase}\"`;
  } else {
    // Single word
    return keyword;
  }
});

// Join the escaped words with a space.
let concatenatedKeywords = formattedKeywords.join(" ");

but the above code gave me output like this – ""on time" "flight""

How Will I create output like this, any help is much appreciated!!!

Tags:

2

Answers


  1. 0 
    const _searchKeyword = 'on time "flight"';
const keywords = _searchKeyword.split(' ');

const formattedKeywords = keywords.map(keyword => {
  if (keyword.startsWith('"') && keyword.endsWith('"')) {
    // Phrase within double quotes
    const phrase = keyword.slice(1, -1);
    return `""${phrase}"`;
  } else {
    // Single word
    return `"${keyword}"`;
  }
});

// Join the formatted words with a space.
const concatenatedKeywords = formattedKeywords.join(' ');

console.log(concatenatedKeywords); // ""on time" "flight""
    1. For phrases within double quotes, I used "" instead of " to
      enclose the phrase.
    2. For single words, I added quotes " around the keyword.
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  2. 0

    Usually you should make/use some string parser here. A simple parser would be in the most cases a finite-state machine:
    https://en.wikipedia.org/wiki/Finite-state_machine
    In our case we could operate in 2 modes: word or phrase (inside quotes):

    const myStr = '    "hello guys", some     words with "quotes inside"" some spaces inside " please keep quoted words as one "phrase / word" end-of-line ';

// has a non closed quote
const myWrongStr = '"hello guys", some words" with "quotes inside" please keep quoted words as one "phrase / word" ';

console.log(myStr+ ':');
console.log(splitToWordsWithQuotes(myStr));
console.log('n'+myWrongStr+':');
console.log(splitToWordsWithQuotes(myWrongStr));

function splitToWordsWithQuotes(str) {

    let mode;
    const words = [];
    let word = '';

    const completeWord = () => (word && words.push(word)) + (word = '');

    for (let i = 0; i < str.length; i++) {

        const c = str[i];

        if (!mode) {
            if (c === ' ') {
                continue;
            }
            if (c === '"') {
                mode = 'phrase';
            } else {
                word += c;
                mode = 'word';
            }
            continue;
        }

        if (c === '"') {
            completeWord();
            mode = mode === 'word' ? 'phrase' : 'word';
            continue;
        }

        if (c === ' ') {
            if (mode === 'phrase') {
                word += ' ';
                continue;
            }
            completeWord();
            continue;
        }

        word += c;

    }

    completeWord();

    return words;

}
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