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How to find the last occurrence of a substring in JavaScript

Standard Objects: Array

How to find the last occurrence of a substring in JavaScript

Standard Objects: Arrayjs string, lastIndexOf, search, string

JavaScript’s lastIndexOf method works for fixed strings but not regex patterns. To find the last regex match, use global regex with exec or matchAll to iterate all matches and capture the last one. Backward searches can be simulated by slicing strings before applying regex.

How to find a substring in a string using indexOf in JavaScript

Standard Objects: String

How to find a substring in a string using indexOf in JavaScript

Standard Objects: StringindexOf, js string, search, string

Handling substring searches with indexOf requires trimming whitespace, managing special characters using regular expressions, and considering performance with data structures like tries. Attention to UTF-16 encoding and string modifications ensures accurate and efficient search results in JavaScript applications.