Question

How to remove the last occurrence of a word from a string in JavaScript

Answer 1

function removeLastOccurrenceOfAWordFromAString(str, word) {
    // Find the position of the last occurrence of word in str
    const pos = str.lastIndexOf(word);

    if (pos !== -1) {
        str = str.substring(0, pos) + str.substring(pos + word.length);
    }

    return str;
}

const str = "javascript c python javascript c++ javascript php rust";
const word = "javascript";

const result = removeLastOccurrenceOfAWordFromAString(str, word);

console.log(result);



/*
run:

javascript c python javascript c++  php rust

*/

 

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Answer 2

function removeLastOccurrenceOfAWordFromAString(str, word) {
    // Find the position of the last occurrence of word in str
    const pos = str.lastIndexOf(word);

    if (pos !== -1) {
        str = str.slice(0, pos) + str.slice(pos + word.length); 
    }

    return str;
}

const str = "javascript c python javascript c++ javascript php rust";
const word = "javascript";

const result = removeLastOccurrenceOfAWordFromAString(str, word);

console.log(result);



/*
run:

javascript c python javascript c++  php rust

*/

 

70+ SQL courses for beginners and professionals