makeCaseRev0.js

//FUNCTION CAMEL
const camelCase = function(input) {
  const newArray =[];

  //convert the string into array
  for (let i = 0; i < input.length; i++){
    newArray.push(input[i]);
  }

  //replace the first character of the word with the uppercase
  for (let i = 0; i < newArray.length; i++){
    if (newArray[i] === " "){
      newArray[i+1]  = newArray[i+1].toUpperCase();
    }
  }

  //remove all spaces in between
  for (let i = 0; i < newArray.length; i++){
    if (newArray[i] === " "){
      newArray.splice(i, 1); 
    }
  }
  //return back each values of the array as tring
  return (newArray.join(""));
};

//FUNCTION PASCAL
const pascalCase = function(input) {
  const newArray =[];

  //convert the string into array
  for (let i = 0; i < input.length; i++){
    newArray.push(input[i]);
  }

  //replace the first character of the word with the uppercase
  for (let i = 0; i < newArray.length; i++){
    newArray[0]  = newArray[0].toUpperCase(); //also the first letter of the string
    if (newArray[i] === " "){
      newArray[i+1]  = newArray[i+1].toUpperCase();
    }
  }

  //remove all spaces in between
  for (let i = 0; i < newArray.length; i++){
    if (newArray[i] === " "){
      newArray.splice(i, 1); 
    }
  }
  //return back each values of the array as tring
  return (newArray.join(""));
};

//FUNCTION SNAKE
const snakeCase = function(input) {
  const newArray =[];

  //convert the string into array
  for (let i = 0; i < input.length; i++){
    newArray.push(input[i]);
  }

  //replace the space between words with the underscore
  for (let i = 0; i < newArray.length; i++){
    if (newArray[i] === " "){
      //newArray[i+1]  = newArray[i+1].toUpperCase();
      newArray[i] = "_";
    }
  }

  //remove all spaces in between
  for (let i = 0; i < newArray.length; i++){
    if (newArray[i] === " "){
      newArray.splice(i, 1); 
    }
  }
  //return back each values of the array as tring
  return (newArray.join(""));
};


//FUNCTION KEBAB
const kebabCase = function(input) {
  const newArray =[];

  //convert the string into array
  for (let i = 0; i < input.length; i++){
    newArray.push(input[i]);
  }

  //replace the space between words with the hyphen
  for (let i = 0; i < newArray.length; i++){
    if (newArray[i] === " "){
      //newArray[i+1]  = newArray[i+1].toUpperCase();
      newArray[i] = "-";
    }
  }

  //remove all spaces in between
  for (let i = 0; i < newArray.length; i++){
    if (newArray[i] === " "){
      newArray.splice(i, 1); 
    }
  }
  //return back each values of the array as tring
  return (newArray.join(""));
};


//FUNCTION TITLE
const titleCase = function(input) {
  const newArray =[];

  //convert the string into array
  for (let i = 0; i < input.length; i++){
    newArray.push(input[i]);
  }

  //replace the first character of the word with the uppercase
  for (let i = 0; i < newArray.length; i++){
    newArray[0]  = newArray[0].toUpperCase(); //also the first letter of the string
    if (newArray[i] === " "){
      newArray[i+1]  = newArray[i+1].toUpperCase();
    }
  }

  //return back each values of the array as tring
  return (newArray.join(""));
};


//FUNCTION VOWEL
const vowelCase = function(input) {
  const newArray =[];

  //convert the string into array
  for (let i = 0; i < input.length; i++){
    newArray.push(input[i]);
  }

  //replace all small vowel in the string with uppercase
  for (let i = 0; i < newArray.length; i++){
    if ((newArray[i] === "a")||(newArray[i] === "e")||(newArray[i] === "i")||(newArray[i] === "o")||(newArray[i] === "u")){
      newArray[i]  = newArray[i].toUpperCase();
      //if some capital consonant make them small
    } else {
      newArray[i]  = newArray[i].toLowerCase();
    }
  }

  //return back each values of the array as tring
  return (newArray.join(""));
};


//FUNCTION CONSONANT
const consonantCase = function(input) {
  const newArray =[];

  //convert the string into array
  for (let i = 0; i < input.length; i++){
    newArray.push(input[i]);
  }

  //replace all small consonant in the string with uppercase
  for (let i = 0; i < newArray.length; i++){
    if (!((newArray[i] === "A")||(newArray[i] === "E")||(newArray[i] === "I")||(newArray[i] === "O")||(newArray[i] === "U"))){
      if (!((newArray[i] === "a")||(newArray[i] === "a")||(newArray[i] === "i")||(newArray[i] === "o")||(newArray[i] === "u"))){
      newArray[i]  = newArray[i].toUpperCase();
      //if some capital vowel make them small
      } 
    } else {
      newArray[i]  = newArray[i].toLowerCase();
    }
      
  }

  //return back each values of the array as tring
  return (newArray.join(""));
};

//FUNCTION UPPER
const upperCase = function(input) {
  const newArray =[];

  //convert the string into array
  for (let i = 0; i < input.length; i++){
    newArray.push(input[i]);
  }

  //replace all characters of the word with the uppercase
  for (let i = 0; i < newArray.length; i++){
    newArray[i]  = newArray[i].toUpperCase();
  }
  //return back each values of the array as tring
  return (newArray.join(""));
};

//FUNCTION LOWER
const loverCase = function(input) {
  const newArray =[];

  //convert the string into array
  for (let i = 0; i < input.length; i++){
    newArray.push(input[i]);
  }

  //replace all characters of the word with the lowercase
  for (let i = 0; i < newArray.length; i++){
    newArray[i]  = newArray[i].toLowerCase();
  }
  //return back each values of the array as tring
  return (newArray.join(""));
};


//////MAIN
const makeCase = function(input, caseStr) {

    //declare a array of casestyle sting
    let caseArray = [camelCase, pascalCase, snakeCase, kebabCase, titleCase, vowelCase, consonantCase, upperCase, loverCase];
    let caseArrayMenu = ["camel", "pascal", "snake", "kebab", "title", "vowel", "consonant", "upper", "lower"];
    let str = input;
    let caseStrOrdered = [];

      
    //check if the caseStr is a string or a array of strings
    if (typeof(caseStr) === "string"){
      for (let inner = 0; inner < caseArray.length; inner++){  //if a string check its match and execute it
        if (caseArrayMenu[inner] === caseStr){
          //console.log(caseArrayMenu[inner]);
          //console.log(caseStr);
          str = caseArray[inner](str);
        }
      }
    } else { //if not a string means an array execute all of them one by one
      for (let i = 0; i < caseStr.length; i++){  
        for (let inner = 0; inner < caseArray.length; inner++){
          if (caseArrayMenu[inner] === caseStr[i]){
            //console.log(caseArrayMenu[inner]);
            //console.log(caseStr);
            str = caseArray[inner](str);
          }
        }
      }
    }
  

  //console.log(str);
  return str;
}

//For test
//console.log(makeCase("this is a string", "camel"));
//console.log(makeCase("this is a string", "pascal"));
//console.log(makeCase("this is a string", "snake"));
//console.log(makeCase("this is a string", "kebab"));
//console.log(makeCase("this is a string", "title"));
//console.log(makeCase("this is a string", "vowel"));
//console.log(makeCase("this is a string", "consonant"));
//console.log(makeCase("this is a string", ["upper", "snake"]));