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Replace the substring after the last occurrence of a specified search string.

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stdlib-js/string-base-replace-after-last

 
 

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About stdlib...

We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.

The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.

When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.

To join us in bringing numerical computing to the web, get started by checking us out onGitHub, and please considerfinancially supporting stdlib. We greatly appreciate your continued support!

replaceAfterLast

NPM versionBuild StatusCoverage Status

Replace the substring after the last occurrence of a specified search string.

Usage

importreplaceAfterLastfrom'https://cdn.jsdelivr.net/gh/stdlib-js/string-base-replace-after-last@deno/mod.js';

replaceAfterLast( str, search, replacement, fromIndex )

Replaces the substring after the last occurrence of a specified search string.

varstr='beep boop';varout=replaceAfterLast(str,' ','loop',str.length);// returns 'beep loop'out=replaceAfterLast(str,'o','bar',str.length);// returns 'beep boobar'

To begin searching from a specific index, provide a correspondingfromIndex argument.

varout=replaceAfterLast('beep boop beep',' ','loop',6);// returns 'beep loop'

IffromIndex is less than zero, the starting index is resolved relative to the last string character, with the last string character corresponding tofromIndex = -1.

varout=replaceAfterLast('beep boop beep',' ','loop',-1);// returns 'beep boop loop'

Notes

  • If a search string is not present in a provided string, the function returns the provided string unchanged.
  • If a search string is an empty string, the function returns the provided string unchanged.
  • IffromIndex resolves to an index which is less than0, the function returns the provided string unchanged.

Examples

importreplaceAfterLastfrom'https://cdn.jsdelivr.net/gh/stdlib-js/string-base-replace-after-last@deno/mod.js';varstr='beep boop';varout=replaceAfterLast(str,'p','see',str.length);// returns 'beep boopsee'str='Hello World!';out=replaceAfterLast(str,'xyz','foo',str.length);// returns 'Hello World!'str='Hello World!';out=replaceAfterLast(str,'','foo',str.length);// returns 'Hello World!'str='';out=replaceAfterLast(str,'xyz','foo',str.length);// returns ''str='beep boop beep baz';out=replaceAfterLast(str,'beep','foo',5);// return 'beepfoo'

See Also

Notice

This package is part ofstdlib, a standard library 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 developstdlib, see the main projectrepository.

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