find the last occurrence of a character in a string javascript

Dexter answered on March 19, 2021 Popularity 10/10 Helpfulness 4/10

answer find the last occurrence of a character in a string javascript

related How to Get the Last Two Characters of a String in JavaScript

find the last occurrence of a character in a string javascript

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str.lastIndexOf(searchValue[, fromIndex])

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: developer.mozilla.org

Tags: character find javascript last-occurrence string

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Contributed on Mar 19 2021

Dexter

0 Answers Avg Quality 2/10

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How to Get the Last Two Characters of a String in JavaScript

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const str = 'Coding Beauty';

const last2 = str.slice(-2);
console.log(last2); // ty

// When we pass a negative number as an argument,
// slice() counts backward from the last string character to find the equivalent index.
// So passing -2 to slice() specifies a start index of str.length - 2.

const last2Again = str.slice(str.length - 2);
console.log(last2Again); // ty

// Note
// We can use substring() in place of slice() to get the first two characters of a string:

const str = 'Coding Beauty';
const last2 = str.substring(str.length - 2);
console.log(last2); // ty

// However, we have to manually calculate the start index ourselves with str.length - 2,
// which makes the code less readable.
// This is because unlike slice(), substring() uses 0 as the start index if a negative number is passed.

const str = 'Coding Beauty';

// -2 is negative, 0 used as start index
const notLast2 = str.substring(-2);

console.log(notLast2); // Coding Beauty

Popularity 9/10 Helpfulness 4/10 Language javascript

Source: javascript.plainenglish.io

Tags: get

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Contributed on Jun 29 2022

OHIOLee

0 Answers Avg Quality 2/10

find the last occurrence of a character in a string javascript

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find the last occurrence of a character in a string javascript

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How to Get the Last Two Characters of a String in JavaScript

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