Ways to eliminate a group of words from a string using JavaScript

Question

Ways to eliminate a group of words from a string using JavaScript

I have developed a unique function that efficiently deletes specified words from a given string. Here is the function:

 var removeFromString = function(wordList, fullStr) { 
  if (Array.isArray(wordList)) {
    wordList.forEach(word => {
      fullStr = fullStr.split(word).join('');
    });
  } else {
    fullStr = fullStr.split(wordList).join(''); 
  }
  return fullStr;
};

To use this function, you can follow these examples:

 console.log( removeFromString("Hello", "Hello World") ); // World
 console.log( removeFromString("Hello", "Hello-World") ); // -World

However, a common issue arises with scenarios like:

 var str = "Remove one, two, not three and four";

In this case, we need to delete "one", "two", and "four". To achieve this, you can do the following:

var c = removeFromString(["one, two," , "and four"], str); // Remove not three
 console.log(c); // Remove not three

As you can see, this updated function enables you to remove multiple words at once by passing an array of words. This enhances the functionality of the removeFromString function. Feel free to give it a try!

javascript arrays

Answer 1

Answer №1

You can utilize the join method to dynamically build a regex from an array and then replace the matching values in a string

function removeFromString(array, string){
  let regex = new RegExp("\\b"+array.join('|')+"\\b","gi")
  return string.replace(regex, '')
}

console.log(removeFromString(["one, two," , "and four"],"Remove one, two, not three and four" ));
console.log(removeFromString(["one" , "and four"],"Remove one, two, not three and four" ));
console.log(removeFromString(["Hello"], "Hello World") )

If your word to match can contain meta-characters, you can enhance the previous function like this

function escape(s) {
    return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
};

function removeFromString(array, string) {
  let escapedArray = array.map(val=> escape(val))
  let regex = new RegExp("(?:^|\\s)"+escapedArray.join('|') + "(?!\\S)", "gi")
  return string.replace(regex, '')
}

console.log(removeFromString(["one, two,", "and four"], "Remove one, two, not three and four"));
console.log(removeFromString(["one", "and four"], "Remove one, two, not three and four"));
console.log(removeFromString(["Hello"], "Hello World"))
console.log(removeFromString(["He*llo"], "He*llo World"))
console.log(removeFromString(["Hello*"], "Hello* World"))

Answer 2

You can utilize the join method to dynamically build a regex from an array and then replace the matching values in a string

function removeFromString(array, string){
  let regex = new RegExp("\\b"+array.join('|')+"\\b","gi")
  return string.replace(regex, '')
}

console.log(removeFromString(["one, two," , "and four"],"Remove one, two, not three and four" ));
console.log(removeFromString(["one" , "and four"],"Remove one, two, not three and four" ));
console.log(removeFromString(["Hello"], "Hello World") )

If your word to match can contain meta-characters, you can enhance the previous function like this

function escape(s) {
    return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
};

function removeFromString(array, string) {
  let escapedArray = array.map(val=> escape(val))
  let regex = new RegExp("(?:^|\\s)"+escapedArray.join('|') + "(?!\\S)", "gi")
  return string.replace(regex, '')
}

console.log(removeFromString(["one, two,", "and four"], "Remove one, two, not three and four"));
console.log(removeFromString(["one", "and four"], "Remove one, two, not three and four"));
console.log(removeFromString(["Hello"], "Hello World"))
console.log(removeFromString(["He*llo"], "He*llo World"))
console.log(removeFromString(["Hello*"], "Hello* World"))

Answer 3

Answer №2

Here is an alternative method that utilizes the reduce function:

function removeWordsFromString(words, str) {
  return words.reduce((result, word) => result.replace(word, ''), str)
}

const str = "Remove one, two, not three and four"
const result  = removeWordsFromString(["one, two, " , "and four"], str)

console.log(result)

Answer 4

Here is an alternative method that utilizes the reduce function:

function removeWordsFromString(words, str) {
  return words.reduce((result, word) => result.replace(word, ''), str)
}

const str = "Remove one, two, not three and four"
const result  = removeWordsFromString(["one, two, " , "and four"], str)

console.log(result)

Answer 5

Answer №3

Check out this solution:

function removeWordsFromArray(array, string){
    array.forEach(word => string = string.replace(word, ''));
    return string;
}

Answer 6

Check out this solution:

function removeWordsFromArray(array, string){
    array.forEach(word => string = string.replace(word, ''));
    return string;
}

Answer 7

Answer №4

Iterating through an array of words using forEach, each word is removed from the sentence by replacing it with an empty string.

Answer 8

Iterating through an array of words using forEach, each word is removed from the sentence by replacing it with an empty string.

Answer 9

Answer №5

Here is an example of what you should use:

function removeWordsFromArray(arrayOfWords, sentence){

    for(var i=0; i<arrayOfWords.length; i++){

        sentence = removeWordFromString(arrayOfWords[i], sentence);

    }
    return sentence;
}

This function iterates through the words in the array and removes them individually.

Answer 10

Here is an example of what you should use:

function removeWordsFromArray(arrayOfWords, sentence){

    for(var i=0; i<arrayOfWords.length; i++){

        sentence = removeWordFromString(arrayOfWords[i], sentence);

    }
    return sentence;
}

This function iterates through the words in the array and removes them individually.

Answer 11

Answer №6

give this a go

function updateText(text,list)
  {
    $.each(list,function(i,item){
    text=text.replace('Hello', item);
    });   
  }
  
  /*Try out this function like this */
updateText(yourtext,arrayOfWords);
or updateText(yourText,{"word1","word2"});

Answer 12

give this a go

function updateText(text,list)
  {
    $.each(list,function(i,item){
    text=text.replace('Hello', item);
    });   
  }
  
  /*Try out this function like this */
updateText(yourtext,arrayOfWords);
or updateText(yourText,{"word1","word2"});

Ways to eliminate a group of words from a string using JavaScript

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

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