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Convert mixed case string to lower case in JavaScript
Problem
We are required to write a JavaScript function convertToLower() that takes in a string method that converts the string it is being called upon into lowercase string and returns the new string.
For example, if the input to the function is
Input
const str = 'ABcD123';
Output
const output = 'abcd123';
Example
Following is the code −
const str = 'ABcD123';
String.prototype.convertToLower = function(){
let res = '';
for(let i = 0; i < this.length; i++){
const el = this[i];
const code = el.charCodeAt(0);
if(code >= 65 && code <= 90){
res += String.fromCharCode(code + 32);
}else{
res += el;
};
};
return res;
};
console.log(str.convertToLower());Output
abcd123
Updated on 24-Apr-2021 10:09:19
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