我正在建立一个约会网站，我下载了这个预装了文本框的模板，但我想使用单选按钮，当我尝试更改它时，我无法验证我的单选按钮，因此它不会让你转到下一个选项卡不回答问题。
我还没试过
<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://fonts.googleapis.com/css?family=Raleway" rel="stylesheet">
<style>
* {
box-sizing: border-box;
}
body {
background:url(img/background.jpg) ;
}
#regForm {
background-color: rgba(255,255,255,0.8);
margin: 100px auto;
font-family: Raleway;
padding: 40px;
width: 70%;
min-width: 300px;
border-radius:35px;
}
h1 {
text-align: center;
}
input {
padding: 10px;
font-size: 17px;
font-family: Raleway;
border: 1px solid #aaaaaa;
}
/* Mark input boxes that gets an error on validation: */
input.invalid {
background-color: #ffdddd;
}
/* Hide all steps by default: */
.tab {
display: none;
}
button {
background-color: #4CAF50;
color: #ffffff;
border: none;
padding: 10px 20px;
font-size: 17px;
font-family: Raleway;
cursor: pointer;
}
button:hover {
opacity: 0.8;
}
#prevBtn {
background-color: #bbbbbb;
}
/* Make circles that indicate the steps of the form: */
.step {
height: 15px;
width: 15px;
margin: 0 2px;
background-color: #bbbbbb;
border: none;
border-radius: 50%;
display: inline-block;
opacity: 0.5;
}
.step.active {
opacity: 1;
}
/* Mark the steps that are finished and valid: */
.step.finish {
background-color: #4CAF50;
}
</style>
<body>
<form method="post" id="regForm" action="">
<!-- One "tab" for each step in the form: -->
<div class="tab">
<h1>Vraag 1</h1>
<p> Zoek je naar een serieuze relatie of een fling?</p>
<input type="radio" oninput="this.className = ''" name="vraag1" required="required"> Serieuze relatie
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag1" required="required"> Fling
</div>
<div class="tab">
<h1>Vraag 2</h1>
<p> Hoelang wil je dat je volgende relatie duurt?</p>
<input type="radio" oninput="this.className = ''" name="vraag2" required="required"> Een Nacht
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag2" required="required"> Een paar maanden
<br>
<input type="radio" oninput="this.className = ''" name="vraag2" required="required"> Meer dan een jaar
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag2" required="required"> Rest van je leven
</div>
<div class="tab">
<h1>Vraag 3</h1>
<p> Ben je sportief of niet sportief?</p>
<input type="radio" oninput="this.className = ''" name="vraag3" required="required"> Sportief
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag3" required="required"> Niet sportief
</div>
<div class="tab">
<h1>Vraag 4</h1>
<p> Ben je uitgaand of verlegen?</p>
<input type="radio" oninput="this.className = ''" name="vraag4" required="required"> Uitgaand
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag4" required="required"> Verlegen
</div>
<div class="tab">
<h1>Vraag 5</h1>
<p> Wat vind je belangrijker familie of vrienden?</p>
<input type="radio" oninput="this.className = ''" name="vraag5" required="required"> Familie
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag5" required="required"> Vrienden
</div>
<div class="tab">
<h1>Vraag 6</h1>
<p> In je vrije tijd vind je leuker om uit te gaan of thuis blijven?</p>
<input type="radio" oninput="this.className = ''" name="vraag6" required="required"> Uitgaan
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag6" required="required"> Thuis blijven
</div>
<div class="tab">
<h1>Vraag 7</h1>
<p> Ben je een ochtend of nacht persoon?</p>
<input type="radio" oninput="this.className = ''" name="vraag7" required="required"> Ochtend persoon
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag7" required="required"> Nacht persoon
</div>
<div class="tab">
<h1>Vraag 8</h1>
<p> Ben je een hond of kat persoon?</p>
<input type="radio" oninput="this.className = ''" name="vraag8" required="required"> Hond
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag8" required="required"> Kat
</div>
<div class="tab">
<h1>Vraag 9</h1>
<p> Vind je leuker om boeken te lezen of TV te kijken?</p>
<input type="radio" oninput="this.className = ''" name="vraag9" required="required"> Boeken lezen
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag9" required="required"> TV kijken
</div>
<div class="tab">
<h1>Vraag 10</h1>
<p> Als je iemand voor het eerst ontmoet wat valt je als eerst op?</p>
<input type="radio" oninput="this.className = ''" name="vraag10" required="required"> Ogen
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag10" required="required"> Glimlach
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag10" required="required"> Haar
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag10" required="required"> Neus
</div>
<div class="tab">
<h1>Vraag 11</h1>
<p> Ben je meer zorgeloos of intense?</p>
<input type="radio" oninput="this.className = ''" name="vraag11" required="required"> Zorgeloos
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag11" required="required"> Intense
</div>
<div class="tab">
<h1>Vraag 12</h1>
<p> Vind je leuker om een grote of kleine groep van vrienden te hebben?</p>
<input type="radio" oninput="this.className = ''" name="vraag12" required="required"> Grote groep vrienden
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag12" required="required"> Kleine groep vrienden
</div>
<div class="tab">
<h1>Vraag 13</h1>
<p> Welke film genre vind je leuker?</p>
<input type="radio" oninput="this.className = ''" name="vraag13" required="required"> Komedie film
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag13" required="required"> Actie film
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag13" required="required"> Horror film
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag13" required="required"> Romantische film
</div>
<div class="tab">
<h1>Vraag 14</h1>
<p> Wat wil je liever eindeloze liefde of eindeloze geld?</p>
<input type="radio" oninput="this.className = ''" name="vraag14" required="required"> Eindeloze liefde
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag14" required="required"> Eindeloze geld
</div>
<div class="tab">
<h1>Vraag 15</h1>
<p> Als je een sms krijgt zou je</p>
<input type="radio" oninput="this.className = ''" name="vraag15" required="required"> Meteen beantwoorden
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag15" required="required"> 5-10 minuten wachten
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag15" required="required"> Een paar uren wachten
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag15" required="required"> Volgende dag beantwoorden
</div>
<div class="tab">
<h1>Vraag 16</h1>
<p> Als je de optie had, wat zou je liever doen?</p>
<input type="radio" oninput="this.className = ''" name="vraag16" required="required"> Skydiven
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag16" required="required"> Bungee jumpen
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag16" required="required"> Met haaien zwemmen
</div>
<div class="tab">
<h1>Vraag 17</h1>
<p> Wat zou je liever eten?</p>
<input type="radio" oninput="this.className = ''" name="vraag17" required="required"> Pizza
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag17" required="required"> Pasta
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag17" required="required"> Salade
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag17" required="required"> Burgers
</div>
<div class="tab">
<h1>Vraag 18</h1>
<p> Ben je meer zelfstandig of ben je meer afhankelijk van anderen?</p>
<input type="radio" oninput="this.className = ''" name="vraag18" required="required"> Zelfstandig
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag18" required="required"> Afhankelijk van anderen
</div>
<div class="tab">
<h1>Vraag 19</h1>
<p> Hou je van avonturen?</p>
<input type="radio" oninput="this.className = ''" name="vraag19" required="required"> Ja
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag19" required="required"> Nee
</div>
<div class="tab">
<h1>Vraag 20</h1>
<p> Welk soort muziek vind je het leukst?</p>
<input type="radio" oninput="this.className = ''" name="vraag20" required="required"> Pop
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag20" required="required"> Rock
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag20" required="required"> Rap
<br>
<input type="radio" placeholder="Last name..." oninput="this.className = ''" name="vraag20" required="required"> Latin
</div>
<div style="overflow:auto;">
<div style="float:right;">
<button type="button" id="prevBtn" onclick="nextPrev(-1)">Previous</button>
<button type="button" id="nextBtn" onclick="nextPrev(1)">Next</button>
</div>
</div>
<!-- Circles which indicates the steps of the form: -->
<div style="text-align:center;margin-top:40px;">
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
</div>
</form>
<script>
var currentTab = 0; // Current tab is set to be the first tab (0)
showTab(currentTab); // Display the current tab
function showTab(n) {
// This function will display the specified tab of the form...
var x = document.getElementsByClassName("tab");
x[n].style.display = "block";
//... and fix the Previous/Next buttons:
if (n == 0) {
document.getElementById("prevBtn").style.display = "none";
} else {
document.getElementById("prevBtn").style.display = "inline";
}
if (n == (x.length - 1)) {
document.getElementById("nextBtn").innerHTML = "Submit";
} else {
document.getElementById("nextBtn").innerHTML = "Next";
}
//... and run a function that will display the correct step indicator:
fixStepIndicator(n)
}
function nextPrev(n) {
// This function will figure out which tab to display
var x = document.getElementsByClassName("tab");
// Exit the function if any field in the current tab is invalid:
if (n == 1 && !validateForm()) return false;
// Hide the current tab:
x[currentTab].style.display = "none";
// Increase or decrease the current tab by 1:
currentTab = currentTab + n;
// if you have reached the end of the form...
if (currentTab >= x.length) {
// ... the form gets submitted:
document.getElementById("regForm").submit();
return false;
}
// Otherwise, display the correct tab:
showTab(currentTab);
}
function validateForm() {
document.querySelectorAll('input[name="radio"]:checked').length > 0
// This function deals with validation of the form fields
var x, y, i, valid = true;
x = document.getElementsByClassName("tab");
y = x[currentTab].getElementsByTagName("input");
// A loop that checks every input field in the current tab:
for (i = 0; i < y.length; i++) {
// If a field is empty...
if (y[i].value == "") {
// add an "invalid" class to the field:
y[i].className += " invalid";
// and set the current valid status to false
valid = false;
}
}
// If the valid status is true, mark the step as finished and valid:
if (valid) {
document.getElementsByClassName("step")[currentTab].className += " finish";
}
return valid; // return the valid status
}
function fixStepIndicator(n) {
// This function removes the "active" class of all steps...
var i, x = document.getElementsByClassName("step");
for (i = 0; i < x.length; i++) {
x[i].className = x[i].className.replace(" active", "");
}
//... and adds the "active" class on the current step:
x[n].className += " active";
}
</script>
</body>
</html>
如果选中该选项卡上的单选按钮，我希望它输出 valid = true，否则我希望它输出 valid = false
最佳答案
用这个替换你的 validateForm() 函数:
function validateForm() {
let tabs = document.getElementsByClassName("tab");
let radios = tabs[currentTab].getElementsByTagName("input");
let valid = false;
for(radio of radios){
if(radio.checked){ valid = true; }
}
return valid;
}
所有代码都有一个工作示例:https://codepen.io/anon/pen/VObXYr
如果需要，请随意添加错误类，我无法弄清楚您想如何做事，但您的验证使用上述解决方案有效。
关于javascript - 为什么我的单选按钮验证不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/56178314/