In this lesson, we will analyze the
search
method, which searches
a string using a regular expression.
It receives the following parameters:
string.search(regex)
The method returns the position of the
first found substring, and if it is not
found, then -1
.
In the following example, we find a
position of the substring 'aaa'
in our string:
let str = 'a aa aaa aaaa aaaa';
let res = str.search(/aaa/);
As a result, the following will be written to the variable:
5
Given a string:
let str = '1 23 456 789';
Find a position of the first number that has three digits.