@stdlib/string-substring-after-last NPM

substringAfterLast

Return the part of a string after the last occurrence of a specified substring.

Installation

npm install @stdlib/string-substring-after-last

Usage

var substringAfterLast = require( '@stdlib/string-substring-after-last' );

substringAfterLast( str, search[, fromIndex] )

Returns the part of a string after the last occurrence of a specified substring.

var str = 'beep boop';
var out = substringAfterLast( str, 'b' );
// returns 'oop'

out = substringAfterLast( str, 'o' );
// returns 'p'

By default, the search starts at the end of the string and proceeds backwards to the beginning. To start the search at a specified index, specify an integer for the fromIndex argument.

var str = 'beep boop';
var out = substringAfterLast( str, 'b', 3 );
// returns 'eep boop'

Notes

If a substring is not present in a provided string, the function returns an empty string.
If provided an empty substring, the function returns an empty string.

Examples

var substringAfterLast = require( '@stdlib/string-substring-after-last' );

var str = 'To be, or not to be, that is the question.';
var out = substringAfterLast( str, ', ' );
// returns 'that is the question.'

out = substringAfterLast( str, 'to be' );
// returns ', that is the question.'

out = substringAfterLast( str, 'question.' );
// returns ''

out = substringAfterLast( str, 'xyz' );
// returns ''

out = substringAfterLast( str, '' );
// returns ''

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.