JS String Search

String Search Methods

JavaScript String Search encompasses methods such as indexOf(), lastIndexOf(), and search(), which facilitate locating substrings within strings and determining their positions.

Additional methods include:

String match()
String matchAll()
String includes()
String startsWith()
String endsWith()

JavaScript String indexOf()

The indexOf() method retrieves the index (position) of the initial occurrence of a string within another string. If the string is not found, it returns -1.

Example

let text = “Please locate where ‘locate’ occurs!”;
let index = text.indexOf(“locate”);

Note

In JavaScript, positions are counted starting from zero.

Therefore, 0 represents the first position in a string, 1 represents the second position, 2 represents the third position, and so forth.