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script.js
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function adp(type) {
switch (type) {
case 'solve':
var input1 = document.querySelectorAll("input")[0].value;
var input2 = document.querySelectorAll("input")[1].value;
var input3 = document.querySelectorAll("input")[2].value;
var input4 = document.querySelectorAll("input")[3].value;
if (input1 && input2 && input3 && input4) {
input1 = Number(document.querySelectorAll("input")[0].value);
input2 = Number(document.querySelectorAll("input")[1].value);
input3 = Number(document.querySelectorAll("input")[2].value);
input4 = Number(document.querySelectorAll("input")[3].value);
try {
if (isNaN(input1) && isNan(input2) && isNan(input3) && isNan(input4)) {
} else {
errorelem.innerHTML = "Done."
switch (input4) {
case (input1 + input2) + input3:
document.querySelectorAll("h3")[0].innerHTML = "+";
document.querySelectorAll("h3")[1].innerHTML = "+";
break;
case (input1 + input2) - input3:
document.querySelectorAll("h3")[0].innerHTML = "+";
document.querySelectorAll("h3")[1].innerHTML = "-";
break;
case (input1 + input2) * input3:
document.querySelectorAll("h3")[0].innerHTML = "+";
document.querySelectorAll("h3")[1].innerHTML = "*";
break;
case (input1 + input2) / input3:
document.querySelectorAll("h3")[0].innerHTML = "+";
document.querySelectorAll("h3")[1].innerHTML = "/";
break;
case (input1 - input2) + input3:
document.querySelectorAll("h3")[0].innerHTML = "-";
document.querySelectorAll("h3")[1].innerHTML = "+";
break;
case (input1 - input2) - input3:
document.querySelectorAll("h3")[0].innerHTML = "-";
document.querySelectorAll("h3")[1].innerHTML = "-";
break;
case (input1 - input2) * input3:
document.querySelectorAll("h3")[0].innerHTML = "-";
document.querySelectorAll("h3")[1].innerHTML = "*";
break;
case (input1 - input2) / input3:
document.querySelectorAll("h3")[0].innerHTML = "-";
document.querySelectorAll("h3")[1].innerHTML = "/";
break;
case (input1 * input2) + input3:
document.querySelectorAll("h3")[0].innerHTML = "*";
document.querySelectorAll("h3")[1].innerHTML = "+";
break;
case (input1 * input2) - input3:
document.querySelectorAll("h3")[0].innerHTML = "*";
document.querySelectorAll("h3")[1].innerHTML = "-";
break;
case (input1 * input2) * input3:
document.querySelectorAll("h3")[0].innerHTML = "*";
document.querySelectorAll("h3")[1].innerHTML = "*";
break;
case (input1 * input2) / input3:
document.querySelectorAll("h3")[0].innerHTML = "*";
document.querySelectorAll("h3")[1].innerHTML = "/";
break;
case (input1 / input2) + input3:
document.querySelectorAll("h3")[0].innerHTML = "/";
document.querySelectorAll("h3")[1].innerHTML = "+";
break;
case (input1 / input2) - input3:
document.querySelectorAll("h3")[0].innerHTML = "/";
document.querySelectorAll("h3")[1].innerHTML = "-";
break;
case (input1 / input2) * input3:
document.querySelectorAll("h3")[0].innerHTML = "/";
document.querySelectorAll("h3")[1].innerHTML = "*";
break;
case (input1 / input2) / input3:
document.querySelectorAll("h3")[0].innerHTML = "/";
document.querySelectorAll("h3")[1].innerHTML = "/";
break;
default:
document.querySelectorAll("h3")[0].innerHTML = "   ";
document.querySelectorAll("h3")[1].innerHTML = "   ";
errorelem.innerHTML = "No answers found.";
break;
}
}
} catch {
errorelem.innerHTML = "Only numbers are allowed.";
}
} else {
errorelem.innerHTML = "Please enter all values.";
}
break;
case 'gen':
document.querySelectorAll("input")[0].value = ""
document.querySelectorAll("input")[1].value = ""
var randomNumber1 = Math.floor(Math.random() * 5);
var randomNumber2 = Math.floor(Math.random() * 5);
var randomNumber3 = Math.floor(Math.random() * 5);
var num3 = Math.floor(Math.random() * 10);
var num4 = Math.floor(Math.random() * 20);
if (randomNumber1 === 0) {
var sign2 = "+"
var num2 = num4 - num3
}
if (randomNumber1 === 1) {
var sign2 = "-"
var num2 = num4 + num3
}
if (randomNumber1 === 2) {
var sign2 = "*"
var num2 = num4 / num3
}
if (randomNumber1 === 3 || randomNumber1 === 4) {
var sign2 = "/"
var num2 = num4 * num3
}
if (randomNumber2 === 0) {
var sign1 = "+"
var num1 = randomNumber3 - num2
}
if (randomNumber2 === 1) {
var sign1 = "-"
var num1 = randomNumber3 + num2
}
if (randomNumber2 === 2) {
var sign1 = "*"
var num1 = randomNumber3 / num2
}
if (randomNumber2 === 3 || randomNumber2 === 4) {
var sign1 = "/"
var num1 = randomNumber3 * num2
}
num1 = Math.floor(num1)
num2 = Math.floor(num2)
document.querySelectorAll("h3")[0].innerHTML = num1
document.querySelectorAll("h3")[1].innerHTML = randomNumber3
document.querySelectorAll("h3")[2].innerHTML = num3
num4 = eval(eval(document.querySelectorAll("h3")[0].innerHTML + sign1 + document.querySelectorAll("h3")[1].innerHTML) + sign2 + document.querySelectorAll("h3")[2].innerHTML)
document.querySelectorAll("h3")[3].innerHTML = num4
if (Number.isInteger(num1) && Number.isInteger(num2) && Number.isInteger(num3) && Number.isInteger(num4)) {
console.log("Answers: " + sign1 + ", " + sign2)
document.querySelectorAll("input")[0].focus()
} else {
adp('gen');
}
break;
case 'check':
if (eval(eval(document.querySelectorAll("h3")[0].innerHTML + document.querySelectorAll("input")[0].value + document.querySelectorAll("h3")[1].innerHTML) + document.querySelectorAll("input")[1].value + document.querySelectorAll("h3")[2].innerHTML) == document.querySelectorAll("h3")[3].innerHTML) {
score += 1
errorelem.innerHTML = "Correct! Score: " + score
adp('gen');
} else {
errorelem.innerHTML = "Incorrect! Try again."
}
break;
case 'reset':
score = 0
errorelem.innerHTML = "Your score has been reset."
break;
default:
console.log("Variable 'type' as '" + type + "' is not valid.")
break;
}
return false;
}