let vowels = "AEIOU";
let result = vowels.substring(0, 3);
document.write(result);I'm puzzled as to why the output is AEI instead of AEIO. Is this due to the indexing starting from zero in programming languages?
let vowels = "AEIOU";
let result = vowels.substring(0, 3);
document.write(result);I'm puzzled as to why the output is AEI instead of AEIO. Is this due to the indexing starting from zero in programming languages?
String.prototype.substring function can take a start index and an optional end index as arguments. The starting index is inclusive in the substring, while the end index is exclusive. If the end index is 4, then the character at index 4 will be excluded and characters 0-3 will be displayed.
For more information, please visit https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substring
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