// toLocalLowerCase(): method used to convert the string into uppercase letter and doesn't change the original string let srt1="the thing you never seen before"; let srt2=srt1.toUpperCase(); let srt3=srt1.toLocaleUpperCase(); console.log(srt1); console.log(srt2);//toUpperCase() console.log(srt3);//toLocaleUpperCase()