我是PHP新手，我们有一个学校项目在线预订系统。
我在不单击提交按钮的情况下如何显示第3步中的用户输入有问题？
单击“上一个”按钮并更新详细信息时，如何在步骤3中显示更新的内容？
步骤3是插入数据库之前的最后一步。
任何帮助将不胜感激。谢谢。
下面是源代码。
<!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-color: #f1f1f1;
}
#regForm {
background-color: #ffffff;
margin: auto;
font-family: Raleway;
padding: 40px;
width: 70%;
min-width: 300px;
border: 3px solid #f1f1f1;
}
h1 {
text-align: center;
}
input {
padding: 10px;
width: 100%;
font-size: 17px;
font-family: Raleway;
border: 1px solid #aaaaaa;
}
select {
padding: 10px;
width: 100%;
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: #2ea3f2;
color: #ffffff;
border: none;
padding: 10px 20px;
font-size: 17px;
font-family: Raleway;
cursor: pointer;
margin-top: 15px;
}
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: #2ea3f2;
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;
}
hr {
width: 100%;
margin-left: auto;
margin-right: auto;
height: 3px;
background-color:#2ea3f2;
color:#2ea3f2;
}
</style>
<body>
<form id="regForm" action="insert.php" method="POST">
<h1>Book for Appointment</h1>
<div style="text-align:center;margin-top:40px;">
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
</div>
<!-- One "tab" for each step in the form: -->
<div class="tab"><h3>Appointment Details</h3>
<hr>
<p><strong>Reason</strong><input placeholder="Reason..." oninput="this.className = ''" name="reason"></p>
<p><strong>Doctor</strong>
<select name="doctor">
<option value="Dr. Emma Blade">Dr. Emma Blade</option>
<option value="Dr. John Watson">Dr. John Watson</option>
<option value="Dr. Alexandra Smit">Dr. Alexandra Smith</option>
</select>
<br>
<br>
<label for="bday"><strong>Calendar</strong></label>
<input type="date" id="date" name="bookingdate">
</div>
<div class="tab"><h3>Personal Information</h3>
<hr>
<p><strong>First Name</strong><input placeholder="First name..." oninput="this.className = ''" name="fname"></p>
<p><strong>Last Name</strong><input placeholder="Last name..." oninput="this.className = ''" name="lname"></p>
<p><strong>Gender</strong><input placeholder="Gender..." oninput="this.className = ''" name="gender"></p>
<p><strong>Email</strong><input placeholder="E-mail..." oninput="this.className = ''" name="email"></p>
<p><strong>Phone</strong><input placeholder="Phone..." oninput="this.className = ''" name="phone"></p>
</div>
<div class="tab"><h3>Confirm Appointment</h3>
<hr>
<h3>Booking Details</h3>
<hr>
<p><strong>Reason:</strong> </p><?php echo $_POST["reason"]; ?>
<p><strong>Doctor:</strong> </p><?php echo $_POST["doctor"]; ?>
<p><strong>Date: </strong></p><?php echo $_POST["bookingdate"]; ?>
<h3>Personal Information</h3>
<hr>
<p><strong>First Name: </strong></p><?php echo $_POST["fname"]; ?>
<p><strong>Last Name: </strong></p><?php echo $_POST["lname"]; ?>
<p><strong>Gender: </strong></p><?php echo $_POST["gender"]; ?>
<p><strong>Email: </strong></p><?php echo $_POST["email"]; ?>
<p><strong>Phone: </strong></p><?php echo $_POST["phone"]; ?>
</div>
<div style="overflow:au to;">
<div style="float:right;">
<button type="button" id="prevBtn" onclick="nextPrev(-1)">Previous</button>
<button type="button" id="nextBtn" onclick="nextPrev(1)">Submit</button>
</div>
</div>
<!-- Circles which indicates the steps of the form: -->
</form>
<script>
var currentTab = 0; // Current tab is set to be the first tab (0)
showTab(currentTab); // Display the crurrent 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() {
// 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>
答案 0 :(得分：0)
您好，请检查以下代码，该代码对我有用。
<!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-color: #f1f1f1;
}
#regForm {
background-color: #ffffff;
margin: auto;
font-family: Raleway;
padding: 40px;
width: 70%;
min-width: 300px;
border: 3px solid #f1f1f1;
}
h1 {
text-align: center;
}
input {
padding: 10px;
width: 100%;
font-size: 17px;
font-family: Raleway;
border: 1px solid #aaaaaa;
}
select {
padding: 10px;
width: 100%;
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: #2ea3f2;
color: #ffffff;
border: none;
padding: 10px 20px;
font-size: 17px;
font-family: Raleway;
cursor: pointer;
margin-top: 15px;
}
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: #2ea3f2;
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;
}
hr {
width: 100%;
margin-left: auto;
margin-right: auto;
height: 3px;
background-color:#2ea3f2;
color:#2ea3f2;
}
</style>
<body>
<form id="regForm" action="insert.php" method="POST">
<h1>Book for Appointment</h1>
<div style="text-align:center;margin-top:40px;">
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
</div>
<!-- One "tab" for each step in the form: -->
<div class="tab"><h3>Appointment Details</h3>
<hr>
<p><strong>Reason</strong>
<input placeholder="Reason..." oninput="this.className = ''" name="reason" id="reason" onblur="getVal(this.id)"></p>
<p><strong>Doctor</strong>
<select name="doctor" id="doctor" onchange="getVal(this.id)">
<option value="Dr. Emma Blade">Dr. Emma Blade</option>
<option value="Dr. John Watson">Dr. John Watson</option>
<option value="Dr. Alexandra Smit">Dr. Alexandra Smith</option>
</select>
<br>
<br>
<label for="bday"><strong>Calendar</strong></label>
<input type="date" id="date" name="bookingdate" id="date" onblur="getVal(this.id)">
</div>
<div class="tab"><h3>Personal Information</h3>
<hr>
<p><strong>First Name</strong><input id="fname" onblur="getVal(this.id)" placeholder="First name..." oninput="this.className = ''" name="fname"></p>
<p><strong>Last Name</strong><input id="lname" onblur="getVal(this.id)" placeholder="Last name..." oninput="this.className = ''" name="lname"></p>
<p><strong>Gender</strong><input id="gender" onblur="getVal(this.id)" placeholder="Gender..." oninput="this.className = ''" name="gender"></p>
<p><strong>Email</strong><input id="email" onblur="getVal(this.id)" placeholder="E-mail..." oninput="this.className = ''" name="email"></p>
<p><strong>Phone</strong><input id="phone" onblur="getVal(this.id)" placeholder="Phone..." oninput="this.className = ''" name="phone"></p>
</div>
<div class="tab"><h3>Confirm Appointment</h3>
<hr>
<h3>Booking Details</h3>
<hr>
<p><strong>Reason:</strong> </p><span id="id_reason"></span>
<p><strong>Doctor:</strong> </p><span id="id_doctor"></span>
<p><strong>Date: </strong></p><span id="id_date"></span>
<h3>Personal Information</h3>
<hr>
<p><strong>First Name: </strong></p><span id="id_fname"></span>
<p><strong>Last Name: </strong></p><span id="id_lname"></span>
<p><strong>Gender: </strong></p><span id="id_gender"></span>
<p><strong>Email: </strong></p><span id="id_email"></span>
<p><strong>Phone: </strong></p><span id="id_phone"></span>
</div>
<div style="overflow:au to;">
<div style="float:right;">
<button type="button" id="prevBtn" onclick="nextPrev(-1)">Previous</button>
<button type="button" id="nextBtn" onclick="nextPrev(1)">Submit</button>
</div>
</div>
<!-- Circles which indicates the steps of the form: -->
</form>
<script>
//Get Value of input box.
function getVal(idInput){
//alert();
var valueOfInput = document.getElementById(idInput).value;
document.getElementById("id_"+idInput).innerHTML = valueOfInput;
}
var currentTab = 0; // Current tab is set to be the first tab (0)
showTab(currentTab); // Display the crurrent 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() {
// 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>
我在js中添加了getVal函数。并获取输入框的值。
答案 1 :(得分：0)
var currentTab = 0; // Current tab is set to be the first tab (0)
showTab(currentTab); // Display the crurrent 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)) {
showData();
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() {
// 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";
}
function showData(){
document.getElementById("reason").innerHTML=document.getElementsByName("reason")[0].value;
document.getElementById("doctor").innerHTML=document.getElementsByName("doctor")[0].value;
document.getElementById("bookingdate").innerHTML=document.getElementsByName("bookingdate")[0].value;
document.getElementById("fname").innerHTML=document.getElementsByName("fname")[0].value;
document.getElementById("lname").innerHTML=document.getElementsByName("lname")[0].value;
document.getElementById("gender").innerHTML=document.getElementsByName("gender")[0].value;
document.getElementById("email").innerHTML=document.getElementsByName("email")[0].value;
document.getElementById("phone").innerHTML=document.getElementsByName("phone")[0].value;
}* {
box-sizing: border-box;
}
body {
background-color: #f1f1f1;
}
#regForm {
background-color: #ffffff;
margin: auto;
font-family: Raleway;
padding: 40px;
width: 70%;
min-width: 300px;
border: 3px solid #f1f1f1;
}
h1 {
text-align: center;
}
input {
padding: 10px;
width: 100%;
font-size: 17px;
font-family: Raleway;
border: 1px solid #aaaaaa;
}
select {
padding: 10px;
width: 100%;
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: #2ea3f2;
color: #ffffff;
border: none;
padding: 10px 20px;
font-size: 17px;
font-family: Raleway;
cursor: pointer;
margin-top: 15px;
}
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: #2ea3f2;
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;
}
hr {
width: 100%;
margin-left: auto;
margin-right: auto;
height: 3px;
background-color:#2ea3f2;
color:#2ea3f2;
}<link href="https://fonts.googleapis.com/css?family=Raleway" rel="stylesheet">
<form id="regForm" action="insert.php" method="POST">
<h1>Book for Appointment</h1>
<div style="text-align:center;margin-top:40px;">
<span class="step"></span>
<span class="step"></span>
<span class="step"></span>
</div>
<!-- One "tab" for each step in the form: -->
<div class="tab"><h3>Appointment Details</h3>
<hr>
<p><strong>Reason</strong><input placeholder="Reason..." oninput="this.className = ''" name="reason"></p>
<p><strong>Doctor</strong>
<select name="doctor">
<option value="Dr. Emma Blade">Dr. Emma Blade</option>
<option value="Dr. John Watson">Dr. John Watson</option>
<option value="Dr. Alexandra Smit">Dr. Alexandra Smith</option>
</select>
<br>
<br>
<label for="bday"><strong>Calendar</strong></label>
<input type="date" id="date" name="bookingdate">
</div>
<div class="tab"><h3>Personal Information</h3>
<hr>
<p><strong>First Name</strong><input placeholder="First name..." oninput="this.className = ''" name="fname"></p>
<p><strong>Last Name</strong><input placeholder="Last name..." oninput="this.className = ''" name="lname"></p>
<p><strong>Gender</strong><input placeholder="Gender..." oninput="this.className = ''" name="gender"></p>
<p><strong>Email</strong><input placeholder="E-mail..." oninput="this.className = ''" name="email"></p>
<p><strong>Phone</strong><input placeholder="Phone..." oninput="this.className = ''" name="phone"></p>
</div>
<div class="tab"><h3>Confirm Appointment</h3>
<hr>
<h3>Booking Details</h3>
<hr>
<p><strong>Reason:</strong> <span id="reason">></span></p>
<p><strong>Doctor:</strong> <span id="doctor"></span></p>
<p><strong>Date: </strong><span id="bookingdate"></span>
</p>
<h3>Personal Information</h3>
<hr>
<p><strong>First Name: </strong><span id="fname"></span></p>
<p><strong>Last Name: </strong><span id="lname"></span></p>
<p><strong>Gender: </strong><span id="gender"></span></p>
<p><strong>Email: </strong><span id="email"></span></p>
<p><strong>Phone: </strong><span id="phone"></span></p>
</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)">Submit</button>
</div>
</div>
<!-- Circles which indicates the steps of the form: -->
</form>