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我無法弄清楚這裏發生了什麼。這是我用單選按鈕寫的一個小測驗。這是我第一次玩弄形式和JavaScript。我不明白爲什麼分數總是1.問題是，在提交時，它只會更新爲第二個答案的+分數。當我刪除2nd +分數時，值保持爲0，當我將第二個答案的+分數更改爲10時，分數爲10.會非常感謝您的幫助。提交的Javascript表單分數更新
Javascript代碼：
function validateRadio(obj, correct) {
var result = 0;
var i;
var l = obj.lenght;
for (i = 0; i < l; i++) {
if(obj[i].checked == true && obj[i].value == correct) {
result = 1;
}
}
if (!result && obj[i].value == correct) {
result = 1;
}
return result;
}
function validateSubmit(obj) {
//configuration
var score = 0;
//cache DOM
var scoreMsg = document.getElementById('scoreMsg');
//Score update on correct asnwer
if (validateRadio(obj.radAns1, 2)) {
score += 1;
}
if (validateRadio(obj.radAns2, 1)) {
score += 1;
}
if (validateRadio(obj.radAns3, 3)) {
score += 1;
}
if (validateRadio(obj.radAns4, 5)) {
score += 1;
}
if (validateRadio(obj.radAns5, 4)) {
score += 1;
}
scoreMsg.innerHTML = score;
}
HTML代碼;
<form onsubmit="validateSubmit(this);return false;" action='#'>
<div id="pytanie 1" class="pytania">
<span class="pytanie-numer">Pytanie 1</span> <br><br>
<span class="pytanie">Do ktorej klasy chodzi lama?</span>
<input type="radio" name="radAns1" value="1" checked>Liceum
<input type="radio" name="radAns1" value="2">Gimbazjum
<input type="radio" name="radAns1" value="3">Podstawowka
<input type="radio" name="radAns1" value="4">Zawodowka
<input type="radio" name="radAns1" value="5">Technikum
</div><br><br>
<div id="pytanie 2" class="pytania">
<span class="pytanie-numer">Pytanie 2</span> <br><br>
<span class="pytanie">Jakiego radia slucha lama?</span>
<input type="radio" name="radAns2" value="1" checked>Radio Maryja
<input type="radio" name="radAns2" value="2">Radio Gold
<input type="radio" name="radAns2" value="3">Radio Kaszebe
<input type="radio" name="radAns2" value="4">Eska-Tv
<input type="radio" name="radAns2" value="5">Radio Z/Radio RMF-FM
</div><br><br>
<div id="pytanie 3" class="pytania">
<span class="pytanie-numer">Pytanie 3</span> <br><br>
<span class="pytanie">Z czego sklada sie dieta lamy?</span>
<input type="radio" name="radAns3" value="1" checked>Z marchwi
<input type="radio" name="radAns3" value="2">Z jablka
<input type="radio" name="radAns3" value="3">Z galazek
<input type="radio" name="radAns3" value="4">Z grzybow
<input type="radio" name="radAns3" value="5">Z siana
</div><br><br>
<div id="pytanie 4" class="pytania">
<span class="pytanie-numer">Pytanie 4</span> <br><br>
<span class="pytanie">Okresl skilla w CS'a lamy.</span>
<input type="radio" name="radAns4" value="1" checked>Noob
<input type="radio" name="radAns4" value="2">Silver
<input type="radio" name="radAns4" value="3">Lama
<input type="radio" name="radAns4" value="4">Ciota
<input type="radio" name="radAns4" value="5">Wszystkie odpowiedzi
</div><br><br>
<div id="pytanie 5" class="pytania">
<span class="pytanie-numer">Pytanie 5</span> <br><br>
<span class="pytanie">Czy lama jedzie autem/rowerem?</span>
<input type="radio" name="radAns5" value="1" checked>Nie bo, nie umie jezdzic
<input type="radio" name="radAns5" value="2">Nie, bo jest za glupi
<input type="radio" name="radAns5" value="3">Nie bo, ma kopyta
<input type="radio" name="radAns5" value="4">Nie bo, zostal skocony
<input type="radio" name="radAns5" value="5">Nie bo, jest debilem i wszyskie odpowiedzi powyzej
</div><br><br>
<input type="submit" value="Wyslij odpowiedzi">
</form>
我發現這個錯誤在for循環之外的validateRadio中，我包含了索引值 –