accepted-answers-prompt.js

/**
 * A prompt that asks a question and only allows certain answers, case insensitive
 */
class AcceptedAnswersPrompt {
    constructor(question, acceptedAnswers) {
        this.question = question;
        this.acceptedAnswers = acceptedAnswers;
    }

    getAcceptedAnswer(potentialAnswer) {
        for(let a of this.acceptedAnswers) {
            if(a.toLowerCase() === potentialAnswer.toLowerCase()) {
                return a;
            }
        }
        return null;
    }

    prompt() {
        let answer = prompt(this.question);
        let acceptedAnswer = this.getAcceptedAnswer(answer);
        while(acceptedAnswer === null) {
            answer = prompt(this.question + "\n\nExcuse me, pick from this list: \n" + this.acceptedAnswers.join(", "))
            acceptedAnswer = this.getAcceptedAnswer(answer);
        }
        return acceptedAnswer;
    }
}

// We can use it to confirm an action

const confirmPrompt = new AcceptedAnswersPrompt("Are you sure?", ["YES", "NO", "Y", "N"])

const shouldDelete = confirmPrompt.prompt()
if(shouldDelete === "YES" || shouldDelete === "Y") {
    alert("They said yes!")
}
else {
    alert("They said no.")
}

const shouldAdd = confirmPrompt.prompt()
if(shouldAdd === "YES" || shouldAdd === "Y") {
    alert("They said yes!")
}
else {
    alert("They said no.")
}

// We can use it to ask for votes

const votePrompt = new QuestionPrompt("Which animal is the best?", ["Cat"])

const vote = votePrompt.prompt();
console.log("vote", vote);

animals.js

// We can use a class to make the objects

class Animal {
    constructor(type, name) {
        this.type = type;
        this.name = name;
        this.votes = 0;
    }

    toString() {
        return this.name + " (" + this.type + ")"
    }
}

let animals = [
    new Animal("cat", "Floof"),
    new Animal("dog", "Spot"),
    new Animal("cat", "Max"),
    new Animal("elephant", "Elle")
]

// Or we can just make the objects ourselves

animals = [
    {
        type: "cat",
        name: "Floof",
        votes: 0,
        toString: () => this.name + " (" + this.type + ")"
    },
    {
        type: "dog",
        name: "Spot",
        votes: 0,
        toString: () => this.name + " (" + this.type + ")"
    },
    {
        type: "cat",
        name: "Max",
        votes: 0,
        toString: () => this.name + " (" + this.type + ")"
    },
    {
        type: "elephant",
        name: "Elle",
        votes: 0,
        toString: () => this.name + " (" + this.type + ")"
    }
]

min-max-number-prompt.js

/**
 * A prompt that asks a question and only allows numbers within a particular range
 * 
 * WARNING: This code was not tested, it's just a quick proof of concept we made in class, 
 * there's a bit more we'd want to do if we wanted it to work correctly :)
 */
 class MinMaxNumberPrompt {
    constructor(question, min, max) {
        this.question = question;
        this.min = min;
        this.max = max;
    }

    prompt() {
        let answer = prompt(this.question);
        while(answer > this.max || answer < this.min) {
            answer = prompt(this.question + "\n\nExcuse me, pick within this range \n" + this.min + " - " + this.max)
        }
        return answer;
    }
}