Tips for extracting a portion of a string in JavaScript:

Question

I'm dealing with a string that looks like this:

var str1="tag:youtube.com,2008:video:VrtMalb-XcQ";

I want to extract the last part of the string, which is VrtMalb-XcQ. What's the best way to do this?

Answer 1

Answer №1

To find the position of the last occurrence of a colon in a string, you can utilize the lastIndexOf method.

var str1 = "tag:youtube.com,2008:video:VrtMalb-XcQ";
var result = str1.substr(str1.lastIndexOf(':') + 1);

Adding + 1 ensures that only the characters after the last colon are included in the output.

This approach is efficient and minimizes memory usage compared to other methods.

Answer 2

To find the position of the last occurrence of a colon in a string, you can utilize the lastIndexOf method.

var str1 = "tag:youtube.com,2008:video:VrtMalb-XcQ";
var result = str1.substr(str1.lastIndexOf(':') + 1);

Adding + 1 ensures that only the characters after the last colon are included in the output.

This approach is efficient and minimizes memory usage compared to other methods.

Answer 3

Here is a method to extract the last element from a string using split and pop:

var str1="tag:youtube.com,2008:video:VrtMalb-XcQ";
str1.split(':').pop()

Answer 4

Here is a method to extract the last element from a string using split and pop:

var str1="tag:youtube.com,2008:video:VrtMalb-XcQ";
str1.split(':').pop()

Answer 5

Extracting the video ID from the YouTube link "tag:youtube.com,2008:video:VrtMalb-XcQ"

Answer 6

Extracting the video ID from the YouTube link "tag:youtube.com,2008:video:VrtMalb-XcQ"