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Replacing upperCase and LowerCase in a string - JavaScript
We are required to write a JavaScript function that takes in a string and constructs a new string with all the uppercase characters converted to lowercase and all the lowercase characters converted to uppercase.
Let’s write the code for this function −
Example
Following is the code −
const str = 'The Case OF tHis StrinG Will Be FLiPped'; const isUpperCase = char => char.charCodeAt(0) >= 65 && char.charCodeAt(0) <= 90; const isLowerCase = char => char.charCodeAt(0) >= 97 && char.charCodeAt(0) <= 122; const flipCase = str => { let newStr = ''; const margin = 32; for(let i = 0; i < str.length; i++){ const curr = str[i]; if(isLowerCase(curr)){ newStr += String.fromCharCode(curr.charCodeAt(0) - margin); }else if(isUpperCase(curr)){ newStr += String.fromCharCode(curr.charCodeAt(0) + margin); }else{ newStr += curr; }; }; return newStr; }; console.log(flipCase(str));
Output
The output in the console: −
tHE cASE of ThIS sTRINg wILL bE flIpPED
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