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Finding the 1-based index of a character in alphabets using JavaScript
Problem
We are required to write a JavaScript function that takes in a lowercase English alphabet character. Our function should return the character’s 1-based index in the alphabets.
Example
Following is the code −
const char = 'j';
const findCharIndex = (char = '') => {
const legend = ' abcdefghijklmnopqrstuvwxyz';
if(!char || !legend.includes(char) || char.length !== 1){
return -1;
};
return legend.indexOf(char);
};
console.log(findCharIndex(char));Output
10
Updated on: 21-Apr-2021
120 Views
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