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javascriptreactjssplitsubstring

Most efficient way to extract data from string

There are so many ways to extract data from a string whether it be substring, split, etc. This is an open ended question and may be too open ended, but is there a "right" way to do this? For example I have a URL http://myServer:8000/courses/courseName/courseID what is the right way to extract out courseID in this instance?

This is an example of what I have done:

const test2 = test.split('/courses/').slice(1).toString();
const test3 = test2.substring(0, test2.lastIndexOf('/'))
console.log(test3)
Solution

  • The following piece of code can help you get the last part of the URL in a single line using Javascript. This will work if the CourseID is always the last element of the URL. I am not sure how fast is it but definitely, it is elegant

    url.substr(url.lastIndexOf('/') + 1)