Refer to the string below: const str = 'Salesforce'; Which two statements result in the word 'Sales'? Choose 2 answers

The goal is to extract the substring 'Sales' from 'Salesforce'.

The substring(startIndex, endIndex) method extracts characters from startIndex up to, but not including, endIndex. str.substring(0, 5) starts at index 0 and extracts characters up to index 5, resulting in 'Sales'.

The substr(startIndex, length) method extracts a substring of a specified length starting from startIndex. str.substr(0, 5) starts at index 0 and extracts 5 characters, also resulting in 'Sales'.

Both statements correctly produce the desired output.

A. str.substr(1, 5);: This extracts 5 characters starting from index 1, which results in 'alesf'.

C. str.substring(1, 5);: This extracts characters from index 1 up to (but not including) index 5, resulting in 'ales'.

1. Mozilla Developer Network (MDN) Web Docs

String.prototype.substring(): "The substring() method returns the part of the string from the start index up to and excluding the end index...". See the "Syntax" and "Examples" sections.

2. Mozilla Developer Network (MDN) Web Docs

String.prototype.substr(): "The substr() method returns a portion of the string

starting at the specified index and extending for a given number of characters afterwards." See the "Syntax" and "Examples" sections. Note: This source also marks substr() as a legacy feature.

3. MIT OpenCourseWare

6.170 Software Studio

Spring 2013

Lecture 2: JavaScript: The lecture notes cover JavaScript fundamentals

including string manipulation. The behavior of substring(i

j) (characters from i to j-1) and substr(i

len) (len characters starting at i) is described

aligning with the correct answer. (See section on "Strings").