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私は数学問題のジェネレーターを書いていますが、2つの数字を含む方程式だけが表示されます。何も表示されず、「未定義」と答えて表示しません。ここで（それは今不完全であることに注意してください）3つの数字がHTMLに表示されない方程式
var type = 0;
var ans = 0;
function generatenumeral() {
var num = (Math.round(1000 * Math.random()))/100;
var abs = Math.random();
if (abs < .4) {
num = num * -1;
}
console.log(num);
return (num);
}
function generatelength() {
var num = (Math.ceil(3 * Math.random()));
console.log(num);
return (num);
}
function generateSymbol() {
var sign = 0;
var num = (Math.round(12 * Math.random()));
console.log(num);
if (num === 0 || num == 1 || num == 9) {
sign = "+";
};
if (num === 2 || num == 3 || num == 10) {
sign = "-";
};
if (num === 4 || num == 5 || num == 11) {
sign = "/";
};
if (num === 6 || num == 7 || num == 12) {
sign = "*";
};
if (num == 8) {
sign = "+";
};
return (sign);
}
function WarmUpAr() {
var leng = generatelength();
if (leng == 1) {
var cool = twoNumb();
return (cool);
}
if (leng == 2) {
var cool = threNumb();
return (cool);
}
function twoNumb() {
var sign = 0;
var equation = 0;
var a = generatenumeral();
var b = generatenumeral();
var siggn = generateSymbol();
equation = a + " " + siggn + " " + b;
if (siggn == "+") {
ans = a + b;
}
if (siggn == "-") {
ans = a - b;
}
if (siggn == "/") {
ans = a/b;
}
if (siggn == "*") {
ans = a * b;
}
return (equation);
}
function threNumb() {
var sign = 0;
var a = generatenumeral();
var b = generatenumeral();
var c = generatenumeral();
var siggn = generateSymbol();
var siggnA = generateSymbol();
var equation = a + " " + siggn + " " + b +" "+ siggnA +" "+ c;
if (siggn.equals("+")) {
if (siggna.equals("+")) {
ans = a + b + c;
}
if (siggna.equals("-")) {
ans = (a + b) - c;
}
if (siggna.equals("/")) {
ans = a + (b/c);
}
if (siggna.equals("*")) {
ans = a + (b * c);
}
}
if (siggn.equals("-")) {
if (siggna.equals("+")) {
ans = a - b + c;
}
if (siggna.equals("-")) {
ans = (a - b) - c;
}
if (siggna == "/") {
ans = a - (b/c);
}
if (siggna.equals("*")) {
ans = a - (b * c);
}
}
if (siggn.equals("/")) {
if (siggna.equals("+")) {
ans = (a/b) + c;
}
if (siggna.equals("-")) {
ans = (a/b) - c;
}
if (siggna.equals("/")) {
ans = (a/b)/c;
}
if (siggna.equals("*")) {
ans = (a/b) * c;
}
}
if (siggn.equals("*")) {
if (siggna.equals("+")) {
ans = (a * b) + c;
}
if (siggna.equals("-")) {
ans = (a * b) - c;
}
if (siggna.equals("/")) {
ans = (a * b)/c;
}
if (siggna.equals("*")) {
ans = (a * b) * c;
}
}
// if (siggn == "^") {
// var ba = Math.round(b);
// var count = 0;
// for (count = 0; count < ba; count += 1) {
// var ab = ab * a;
// }
// ans = ab;
return (equation);
}
document.getElementById("ans").innerHTML = "not yet";
function arithmetic() {
type = 1;
document.getElementById("demo").innerHTML = WarmUpAr();
}
function preAlg() {
type = 2;
document.getElementById("demo").innerHTML = "hello";
}
function Alg() {
type = 3;
document.getElementById("demo").innerHTML = "This is cool";
}
function theAns() {
document.getElementById("ans").innerHTML = ans;
}<p> "your warm up is....." </p>
<button onclick="arithmetic()">Arithmetic Warm Up </button>
<button onclick="preAlg()">PreAlg Warm Up </button>
<button onclick="Alg()">Algerbra Warm Up </button>
<p id="demo"></p>
<p>the answer is ....</p>
<button onclick="theAns()">answer</button>
<p id="ans"></p>
あなたは 'WarmUpAr'機能に問題があります：あなたは変数「式」を設定して、「式は」で置き換えることができ返しどこどこの間にあるすべて）twoNumb（）とthreNumb（で。あなたは '}' – Alon