我的提交按钮被禁用。我想在输入日期和地点字段后启用它。我尝试过以下功能，但它不起作用。
function testFinish(){
var datepicker = document.getElementById('datepicker');
var location = document.querySelector('location');
var btn = document.getElementById('btn');
if (location.value && datepicker.value)
btn.disabled = false;
}
<!doctype html>
<html lang="en">
<head>
<title>Title</title>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://js.stripe.com/v3/"></script>
<style>
.small-img-group {
display: flex;
justify-content: space-between;
}
.small-img-col {
flex-basis: 24%;
cursor: pointer;
}
.counter1 {
float: left;
display: flex;
justify-content: space-between;
overflow-x: hidden;
overflow-y: hidden;
}
.counter2 {
float: left;
display: flex;
justify-content: space-between;
overflow-x: hidden;
overflow-y: hidden;
padding-left: 15px;
}
.up,
.down {
display: inline-block;
color: rgb(0, 0, 0);
font-size: 29px;
margin: 1px 1px;
cursor: pointer;
width: 23px;
line-height: 14px;
height: 26px;
text-align: center;
font-weight: bold;
border: 1px solid orangered;
user-select: none;
}
.ui-state-highlight, .ui-widget-content .ui-state-highlight, .ui-widget-header .ui-state-highlight {
border: 1px solid #dad55e;
background: orangered;
color: #ffffff;
}
.up:hover,
.down:hover {
color: #fd0b3f;
text-align: center;
}
.adults {
padding-right: 5px;
}
.children {
padding-right: 5px;
}
input {
appearance: none;
height: 28px;
text-align: center;
width: 63px;
line-height: 24px;
font-size: 20px;
border-radius: 5px;
border-color: orangered;
}
input[type="radio"] {
display: none;
}
label[for=private] {
position: relative;
color: orangered;
font-size: 20px;
border: 2px solid orangered;
border-radius: 5px;
align-items: left;
display: flex;
cursor: pointer;
margin-right: 10px;
}
label[for=shared] {
position: relative;
color: orangered;
font-size: 20px;
border: 2px solid orangered;
border-radius: 5px;
align-items: left;
display: flex;
cursor: pointer;
}
label[for=withatv] {
position: relative;
color: orangered;
font-size: 20px;
border: 2px solid orangered;
border-radius: 5px;
align-items: left;
display: flex;
cursor: pointer;
margin-right: 10px;
}
label[for=withoutatv] {
position: relative;
color: orangered;
font-size: 20px;
border: 2px solid orangered;
border-radius: 5px;
align-items: left;
display: flex;
cursor: pointer;
}
input[type="radio"]:checked+label {
background-color: orangered;
color: white;
}
input[type="radio"]:checked+label:before {
height: 16px;
width: 16px;
border: 10px solid white;
background-color: orangered;
}
</style>
</head>
<body>
<section class="container sproduct my-5 pt-5">
<div class="row mt-5">
<div class="col-lg-5 col-md-12 col-12">
<img class="img-fluid w-100 pb-1" src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" alt="" id="MainImg" width="450">
<div class="small-img-group">
<div class="small-img-col">
<img src="https://media.tacdn.com/media/attractions-splice-spp-674x446/09/99/99/87.jpg" width="100%" class="small-img" alt="">
</div>
<div class="small-img-col">
<img src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" width="100%" class="small-img" alt="">
</div>
<div class="small-img-col">
<img src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" width="100%" class="small-img" alt="">
</div>
<div class="small-img-col">
<img src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" width="100%" class="small-img" alt="">
</div>
</div>
</div>
<div class="col-lg-6 col-md-12 col-12">
<h6 style="padding-top: 20px;">Home / Morning Safari</h6>
<h3>Morning Safari</h3>
<h2><label> Total AED:</label><input type="number" id="amount"class="total Price" readonly></label></h2>
<p><input type="text" id="datepicker" style="width: 120px;" autocomplete="off" placeholder="Date" readonly/></p>
<div class="counter1">
<Label class="Adults">Adults</Label>
<div class='down' onclick='decreaseCount(event, this)'>-</div>
<input id="adults" type='text' value='1' readonly>
<div class='up' onclick='increaseCount(event, this)'>+</div>
</div>
<div class="counter2">
<Label class="Children">Children</Label>
<div class='down' onclick='decreaseCount2(event, this)'>-</div>
<input id="children" type='text' value='0' readonly>
<div class='up' onclick='increaseCount(event, this)'>+</div>
</div>
<div style="display: flex; width: 100%">
<input type="radio" name="occupancy" id="private" value="private" checked="checked" onclick="updateTotal()">
<label for="private" style="width: 74px;">Private</label>
<input type="radio" name="occupancy" id="shared" value="shared" onclick="updateTotal()">
<label for="shared" style="width: 74px;">Shared</label>
</div>
<div style="display: flex; width:100%">
<input type="radio" name="atv" id="withatv" checked="checked" onclick="updateTotal()">
<label for="withatv" style="width: 94px;">With ATV</label>
<input type="radio" name="atv" id="withoutatv" onclick="updateTotal()">
<label for="withoutatv" style="width: 119px;">Without ATV</label>
</div>
<div class="field">
<label for="cause">Cause</label>
<select id="cause">
<option value="cause-a">cause a</option>
<option value="cause-b">cause b</option>
</select>
</div>
<div class="field">
<label for="currency">Currency</label>
<select class="field" id="currency">
<option value="cad">CAD</option>
<option value="eur">EUR</option>
<option value="usd">USD</option>
</select>
</div>
<input class="location" type="text" placeholder="location" oninput="testFinish();">
<div class="field">
<button type="submit" id="btn" name="ik" disabled onsubmit="alert('SUBMITTED')">Donate</button>
</div>
</div>
</div>
</section>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="jquery.ui.datepicker.mobile.css" />
<script src="jQuery.ui.datepicker.js"></script>
<script src="jquery.ui.datepicker.mobile.js"></script>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script src="donate.js" charset="utf-8"></script>
<script>
function increaseCount(e, el) {
var input = el.previousElementSibling;
var value = parseInt(input.value, 10);
value = isNaN(value) ? 0 : value;
value++;
input.value = value;
updateTotal();
}
function decreaseCount(e, el) {
var input = el.nextElementSibling;
var value = parseInt(input.value, 10);
if (value > 1) {
value = isNaN(value) ? 0 : value;
value--;
input.value = value;
updateTotal();
}
}
function decreaseCount2(e, el) {
var input = el.nextElementSibling;
var value = parseInt(input.value, 10);
if (value > 0) {
value = isNaN(value) ? 0 : value;
value--;
input.value = value;
updateTotal();
}
}
$('#datepicker').datepicker({
minDate:0
})
var MainImg = document.getElementById('MainImg');
var smallimg = document.getElementsByClassName('small-img');
smallimg[0].onclick = function() {
MainImg.src = smallimg[0].src;
}
smallimg[1].onclick = function() {
MainImg.src = smallimg[1].src;
}
smallimg[2].onclick = function() {
MainImg.src = smallimg[2].src;
}
smallimg[3].onclick = function() {
MainImg.src = smallimg[3].src;
}
function calculateTotal() {
const privateAdultPrice = 100;
const sharedAdultPrice = 40;
const privateChildrenPrice = 50;
const sharedChildrenPrice = 30;
const withAtvAdultPrice = 100;
const withAtvChildrenPrice = 80;
const noAtvPrice = 0;
const adults = +document.querySelector('#adults').value;
const children = +document.querySelector('#children').value;
const isPrivate = document.getElementById('private').checked;
const isWithAtv = document.getElementById('withatv').checked;
const adultTripPrice = isPrivate ? privateAdultPrice : sharedAdultPrice;
const childrenTripPrice = isPrivate ? privateChildrenPrice : sharedChildrenPrice;
const adultVehiclePrice = isWithAtv ? withAtvAdultPrice : noAtvPrice;
const childrenVehiclePrice = isWithAtv ? withAtvChildrenPrice : noAtvPrice
const adultPrice = adults * (adultTripPrice + adultVehiclePrice)
const childrenPrice = children * (childrenTripPrice + childrenVehiclePrice)
return adultPrice + childrenPrice;
}
function updateTotal() {
const total = calculateTotal();
console.log(total);
document.querySelector('#amount').value = total;
}
updateTotal();
</script>
</body>
</html>
您的代码中有很多错误。首先，您的位置输入选择器错误。您需要提供一个id，然后通过id获取元素。
您也可以使用类选择器来执行此操作，但这会使您更加困惑。
<input class="location" id="location" type="text" placeholder="location" onkeyup="testFinish();">
var location = document.querySelector('#location');
其次，您还需要将事件侦听器添加到日期选择器输入中(如果用户先填充位置，然后再填充日期选择器，则该按钮仍将被禁用。(
<input type="text" onchange="testFinish()" id="datepicker" style="width: 120px;" autocomplete="off" placeholder="Date" readonly />
下面是工作片段。
function testFinish(){
var datepicker = document.getElementById('datepicker');
var location = document.querySelector('#location');
var btn = document.getElementById('btn');
if (location && location.value && datepicker.value)
btn.disabled = false;
}<!doctype html>
<html lang="en">
<head>
<title>Title</title>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://js.stripe.com/v3/"></script>
<style>
.small-img-group {
display: flex;
justify-content: space-between;
}
.small-img-col {
flex-basis: 24%;
cursor: pointer;
}
.counter1 {
float: left;
display: flex;
justify-content: space-between;
overflow-x: hidden;
overflow-y: hidden;
}
.counter2 {
float: left;
display: flex;
justify-content: space-between;
overflow-x: hidden;
overflow-y: hidden;
padding-left: 15px;
}
.up,
.down {
display: inline-block;
color: rgb(0, 0, 0);
font-size: 29px;
margin: 1px 1px;
cursor: pointer;
width: 23px;
line-height: 14px;
height: 26px;
text-align: center;
font-weight: bold;
border: 1px solid orangered;
user-select: none;
}
.ui-state-highlight,
.ui-widget-content .ui-state-highlight,
.ui-widget-header .ui-state-highlight {
border: 1px solid #dad55e;
background: orangered;
color: #ffffff;
}
.up:hover,
.down:hover {
color: #fd0b3f;
text-align: center;
}
.adults {
padding-right: 5px;
}
.children {
padding-right: 5px;
}
input {
appearance: none;
height: 28px;
text-align: center;
width: 63px;
line-height: 24px;
font-size: 20px;
border-radius: 5px;
border-color: orangered;
}
input[type="radio"] {
display: none;
}
label[for=private] {
position: relative;
color: orangered;
font-size: 20px;
border: 2px solid orangered;
border-radius: 5px;
align-items: left;
display: flex;
cursor: pointer;
margin-right: 10px;
}
label[for=shared] {
position: relative;
color: orangered;
font-size: 20px;
border: 2px solid orangered;
border-radius: 5px;
align-items: left;
display: flex;
cursor: pointer;
}
label[for=withatv] {
position: relative;
color: orangered;
font-size: 20px;
border: 2px solid orangered;
border-radius: 5px;
align-items: left;
display: flex;
cursor: pointer;
margin-right: 10px;
}
label[for=withoutatv] {
position: relative;
color: orangered;
font-size: 20px;
border: 2px solid orangered;
border-radius: 5px;
align-items: left;
display: flex;
cursor: pointer;
}
input[type="radio"]:checked+label {
background-color: orangered;
color: white;
}
input[type="radio"]:checked+label:before {
height: 16px;
width: 16px;
border: 10px solid white;
background-color: orangered;
}
</style>
</head>
<body>
<section class="container sproduct my-5 pt-5">
<div class="row mt-5">
<div class="col-lg-5 col-md-12 col-12">
<img class="img-fluid w-100 pb-1"
src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" alt="" id="MainImg"
width="450">
<div class="small-img-group">
<div class="small-img-col">
<img src="https://media.tacdn.com/media/attractions-splice-spp-674x446/09/99/99/87.jpg"
width="100%" class="small-img" alt="">
</div>
<div class="small-img-col">
<img src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" width="100%"
class="small-img" alt="">
</div>
<div class="small-img-col">
<img src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" width="100%"
class="small-img" alt="">
</div>
<div class="small-img-col">
<img src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" width="100%"
class="small-img" alt="">
</div>
</div>
</div>
<div class="col-lg-6 col-md-12 col-12">
<h6 style="padding-top: 20px;">Home / Morning Safari</h6>
<h3>Morning Safari</h3>
<h2><label> Total AED:</label><input type="number" id="amount" class="total Price" readonly></label>
</h2>
<p><input type="text" onchange="testFinish()" id="datepicker" style="width: 120px;" autocomplete="off" placeholder="Date"
readonly /></p>
<div class="counter1">
<Label class="Adults">Adults</Label>
<div class='down' onclick='decreaseCount(event, this)'>-</div>
<input id="adults" type='text' value='1' readonly>
<div class='up' onclick='increaseCount(event, this)'>+</div>
</div>
<div class="counter2">
<Label class="Children">Children</Label>
<div class='down' onclick='decreaseCount2(event, this)'>-</div>
<input id="children" type='text' value='0' readonly>
<div class='up' onclick='increaseCount(event, this)'>+</div>
</div>
<div style="display: flex; width: 100%">
<input type="radio" name="occupancy" id="private" value="private" checked="checked"
onclick="updateTotal()">
<label for="private" style="width: 74px;">Private</label>
<input type="radio" name="occupancy" id="shared" value="shared" onclick="updateTotal()">
<label for="shared" style="width: 74px;">Shared</label>
</div>
<div style="display: flex; width:100%">
<input type="radio" name="atv" id="withatv" checked="checked" onclick="updateTotal()">
<label for="withatv" style="width: 94px;">With ATV</label>
<input type="radio" name="atv" id="withoutatv" onclick="updateTotal()">
<label for="withoutatv" style="width: 119px;">Without ATV</label>
</div>
<div class="field">
<label for="cause">Cause</label>
<select id="cause">
<option value="cause-a">cause a</option>
<option value="cause-b">cause b</option>
</select>
</div>
<div class="field">
<label for="currency">Currency</label>
<select class="field" id="currency">
<option value="cad">CAD</option>
<option value="eur">EUR</option>
<option value="usd">USD</option>
</select>
</div>
<input class="location" id="location" type="text" placeholder="location" onkeyup="testFinish();">
<div class="field">
<button type="submit" id="btn" name="ik" disabled onsubmit="alert('SUBMITTED')">Donate</button>
</div>
</div>
</div>
</section>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"
integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"
integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1"
crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"
integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM"
crossorigin="anonymous"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="jquery.ui.datepicker.mobile.css" />
<script src="jQuery.ui.datepicker.js"></script>
<script src="jquery.ui.datepicker.mobile.js"></script>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script src="donate.js" charset="utf-8"></script>
<script>
function increaseCount(e, el) {
var input = el.previousElementSibling;
var value = parseInt(input.value, 10);
value = isNaN(value) ? 0 : value;
value++;
input.value = value;
updateTotal();
}
function decreaseCount(e, el) {
var input = el.nextElementSibling;
var value = parseInt(input.value, 10);
if (value > 1) {
value = isNaN(value) ? 0 : value;
value--;
input.value = value;
updateTotal();
}
}
function decreaseCount2(e, el) {
var input = el.nextElementSibling;
var value = parseInt(input.value, 10);
if (value > 0) {
value = isNaN(value) ? 0 : value;
value--;
input.value = value;
updateTotal();
}
}
$('#datepicker').datepicker({
minDate: 0
})
var MainImg = document.getElementById('MainImg');
var smallimg = document.getElementsByClassName('small-img');
smallimg[0].onclick = function () {
MainImg.src = smallimg[0].src;
}
smallimg[1].onclick = function () {
MainImg.src = smallimg[1].src;
}
smallimg[2].onclick = function () {
MainImg.src = smallimg[2].src;
}
smallimg[3].onclick = function () {
MainImg.src = smallimg[3].src;
}
function calculateTotal() {
const privateAdultPrice = 100;
const sharedAdultPrice = 40;
const privateChildrenPrice = 50;
const sharedChildrenPrice = 30;
const withAtvAdultPrice = 100;
const withAtvChildrenPrice = 80;
const noAtvPrice = 0;
const adults = +document.querySelector('#adults').value;
const children = +document.querySelector('#children').value;
const isPrivate = document.getElementById('private').checked;
const isWithAtv = document.getElementById('withatv').checked;
const adultTripPrice = isPrivate ? privateAdultPrice : sharedAdultPrice;
const childrenTripPrice = isPrivate ? privateChildrenPrice : sharedChildrenPrice;
const adultVehiclePrice = isWithAtv ? withAtvAdultPrice : noAtvPrice;
const childrenVehiclePrice = isWithAtv ? withAtvChildrenPrice : noAtvPrice
const adultPrice = adults * (adultTripPrice + adultVehiclePrice)
const childrenPrice = children * (childrenTripPrice + childrenVehiclePrice)
return adultPrice + childrenPrice;
}
function updateTotal() {
const total = calculateTotal();
console.log(total);
document.querySelector('#amount').value = total;
}
updateTotal();
</script>
</body>
</html>