javascript_lab_day9.js

function fizzbuzz(fizz, buzz)
{
    if (typeof(fizz) !== "number" || typeof(buzz) !== "number"){
        console.error("one of your parameter is not a number!");
        return ;
    }
    
    
    for (var i = 1 ; i <=100; i++ ){
        if (i % fizz === 0 && i % buzz === 0){
            console.log("fizzbuzz");
        }
        
        else if (i% fizz === 0 )
        {
            console.log("fizz");
        }
        
        else if (i % buzz === 0){
            console.log("buzz");
        }
        else
        {
            console.log(i);
        }
    }
    
    return;
}

//grade
var keepLooping = true;

while (keepLooping){
var grade = prompt("please enter your grade: ");
    
    if (grade > 100){
        alert("your grade is greater than 100! try again!");
    }
    
    else if(grade < 0){
        alert("your grade can't be a negative value!! Try again!" );
    }
    
    else
    {
        keepLooping = false;
    }
}

switch(true){
    // case grade < 0:
    //     console.log("your grade can't be a negative value!!");
    //     break;
    
    // case grade > 100:
    //     console.log("how did you get a grade greater than 100??");
    //     break;
    
    case (grade >= 90 && grade <= 100):
        console.log("You got an A!");
        break;
    
    case (grade >= 80 && grade < 90):
        console.log("You got a B!");
        break;
    
    case (grade >= 70 && grade < 80):
        console.log("You got a C!");
        break;
        
    case (grade >= 60 && grade < 70):
        console.log("You got a D!");
        break;
        
    default:
        console.log("You failed..");
        break;
}


function capitalize(string){
    if (typeof(string) !== "string"){
    return null;
    }
    else{

return string[0].toUpperCase() + string.substr(1, string.length);
    }    
}

function capitalizeEven(string){
  if (typeof(string) !== "string"){
    return null;
  }
  else{

    var stringArray = string.split("");

    for (var i = 0; i < stringArray.length; i ++){
      if (i%2 !== 0 ){
        stringArray[i] = string[i].toUpperCase();
      }
      else{
        stringArray[i] = string[i];
      }
    }
    return stringArray.join("");
  }
}

function findOccurence(){
    
    for(var y = 2014; y <= 2050; y++){
        
        var date = new Date(y, 0, 1);
        
        if(date.getDay() === 0){
            return date;
        }
        
    }
    
}

function guessNumber(){
    
    var randy = Math.floor((Math.random() * 100) + 1)
    
    var correct = false;
    
    var trials = 0;
    
    alert("A random number between 1 and 100 has been drawn!");
    
    while(!correct){
        trials +=1;
        input = parseInt(prompt("please enter your guess!"));
        
        if (typeof(input) != "number"){
            alert("that's not a number");
        }
        
        else if(input === randy){
            alert("good work! you guessed in "+ trials+ " tries!");
            correct = true;
        }
        
        else if(input > randy){
            alert("Your number is too high, try again!");
        }
        
        else {
            alert("your number is too low, try again");
        }
        
    }
}