id.substr(id.length - 1); //get the last character id.substr(2); //get ... 5 characters and last 1 character in a string using JavaScript: ... <看更多>

In this tutorial, you will learn how to use the JavaScript String slice() method to ... or endIndex is -1 , the slice() will treat it as str.length - 1 . ... <看更多>

CodeChallenge/javascript/FreeCodeCamps/Basic JavaScript/Use Bracket Notation ... of the last letter of the string by using firstName[firstName.length - 1] . ... <看更多>

In this tutorial, we'll take a look at the JavaScript String Length property and how you can use this to ... ... <看更多>