ds-algo-study/DS-n-Algos/ALGO/UNSORTED/Search and Replace.js

Just experimenting with publishing a package

function replaceWords(str,before,after){
    if(/^[A-Z]/.test(before)){
after = after[0].toUpperCase() + after.substring(1)
    }
    else{
        after = after[0].toLowerCase()+ after.substring(1)
    }
    return str.replace(before,after)
}
console.log(replaceWords("Let us go to the store", "store", "mall"))//"Let us go to the mall"
console.log(replaceWords("He is Sleeping on the couch", "Sleeping", "sitting")) //"He is Sitting on the couch"
console.log(replaceWords("His name is Tom", "Tom", "john"))
//"His name is John"