Aufruf einer Funktion von einer Eingabeaufforderungs-Box

Question

Ich habe eine Eingabeaufforderungsbox, und eine Bedingung gegeben, möchte ich die checkNumbers Funktion aufrufen, wenn der Eingabeaufforderungswert zurückgegeben wird, aber ich bin mir nicht sicher, wie der Wert übergeben wird.

function getNumbersMakeProblem() { 

    // a, b are declared up here usually 
    userAnswer = prompt("State the value of the unknown variable in the \ 
    following problem below. If your answer is not an integer, round to the \ 
    nearest hundredth. " + a + "x - " + b + " = " + 3*a); 

    return userAnswer() 
} 

function checkAnswer(a, b, userAnswer) { 

    var numAndDenom = userAnswer.split('/'), 
     result = parseInt(numAndDenom[0], 10)/parseInt(numAndDenom[1], 10), 
     resultToHundreth = Number(result.toFixed(2)), 
     correctAnswer = ((3 * Number(b))/Number(a)); 

    if (Number(userAnswer) === correctAnswer) { 
    alert("CORRECT!!!"); 
    } 
    // Further Conditions 
} 

Answer 1

<input type="text" id="input_a"> 
<input type="text" id="input_b"> 
<input type="button" value="Run" onclick="getNumbersMakeProblem();"> 

//script tag here 
function getNumbersMakeProblem(){ 
    var a = document.getElementById("input_a").value, 
    a = a.toLowerCase(); 

    var b = document.getElementById("input_b").value; 

//variables a and b are the users input for their birth month and day respectively 

if (a === "january") { 
    a = 1; 
} 

// leaving other months out to save space 

if (a === "december") { 
    a = 12; 
} 
var userAnswer = prompt("State the value of the unknown variable in the \ 
following problem below. If your answer is not an integer, round to the \ 
nearest hundredth. " + a + "x - " + b + " = " + 3*a); 


checkAnswer(a,b,userAnswer); // Single change here 
} 



// IDK how to incorporate this second piece after the first prompt 

function checkAnswer(a, b, userAnswer) { 

    var numAndDenom = userAnswer.split('/') 
    var result = parseInt(numAndDenom[0], 10)/parseInt(numAndDenom[1], 10); 
    var resultToHundreth = Number(result.toFixed(2)); 
    var correctAnswer = ((3*Number(a) + Number(b))/Number(a)); 

    if (Number(userAnswer) === correctAnswer) { 
    alert("CORRECT!!!"); 
    } 
    else if (userAnswer === correctAnswer.toFixed(2)) { 
    alert("AWESOME!!!"); 
    } 
    else if(userAnswer === correctAnswer.toFixed(1)) { 
    alert("You were supposed to round to the nearest HUNDRETH.") 
    } 
    else if (Number(result) === correctAnswer) { 
    alert("Now convert your answer to a decimal.") 
    } 
    else { 
    alert("TRY AGAIN..."); } 

    } 
// closing script tag here