我们需要编写一个JavaScript函数,该函数接受一个字符串并构造一个新字符串,其中所有大写字符都转换为小写,所有小写字符都转换为大写。
让我们为该函数编写代码-
以下是代码-
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));
输出结果
控制台中的输出:-
tHE cASE of ThIS sTRINg wILL bE flIpPED