I have a jsp page which has a form embedded and I'm submitting the form via JavaScript.
When the page has say aroung 10-50 items the submit is working fine but if the page has aroud 500 items or more its not submitting.
After I click the submit button the page just stays in the current page and it just keeps loading.
How can I solve this issue.
A sample code is shown below:
<html>
<script type="text/javascript">
function submitChecked() {
var approveStr="";
var approveArr=new Array();
if(document.frmReleaseDetail.checkBoxVer.length != undefined)
{
for(var i=0; i < document.frmReleaseDetail.checkBoxVer.length; i++)
{
if(document.frmReleaseDetail.checkBoxVer[i].checked)
{
approveStr +=document.frmReleaseDetail.checkBoxVer[i].value + ",";
approveArr.push(document.frmReleaseDetail.checkBoxVer[i].value);
}
}
if(approveStr=="")
alert("Please make a selection by clicking atleast one checkbox");
else
{
document.getElementById("passCheckVerVal").value=approveArr;
document.forms["newForm"].submit();
}
} //end of if checking multiple checkboxes
else //if the page has only one checkbox(version)
{
if(document.frmReleaseDetail.checkBoxVer.checked)
{
window.location = "process.jsp?passCheckVer="+document.frmReleaseDetail.checkBoxVer.value+'&u_trackingRequestID=<%=request.getParameter("u_trackingRequestID")%>';
}
else
alert("Please make a selection by clicking atleast one checkbox");
}
}
</script>
<body>
<%
String newTrackingReqId=request.getParameter("u_trackingRequestID");
%>
<form name=frmReleaseDetail>
//jdbc code
//100's checkbox named checkBoxVer
//button to invoke submitChecked javascript function
</form>
<form name=newForm" id="newForm" action="process.jsp" method="post">
<input type="hidden" name="passCheckVer" id="passCheckVerVal"/>
<input type="hidden" name="u_trackingRequestID" id="u_trackingRequestIDVal" value="<%=newTrackingReqId%>"/>
</form>
</body>
</html>
You need to change the form method to POST.
<form name=frmReleaseDetail method="post">
By default the method is GET. More informations here. You have quantity of data limitation lot smaller in GET.
EDIT :
Code suggestion with only one form :
<html>
<script type="text/javascript">
function submitChecked() {
var checked = false;
for(var i=0; i < document.frmReleaseDetail.checkBoxVer.length; i++)
{
if(document.frmReleaseDetail.checkBoxVer[i].checked)
{
checked = true;
break;
}
}
if((document.frmReleaseDetail.checkBoxVer.length != undefined and checked) or (document.frmReleaseDetail.checkBoxVer.checked))
{
document.forms["frmReleaseDetail"].submit();
}
else
{
alert("Please make a selection by clicking atleast one checkbox");
}
</script>
<body>
<%
String newTrackingReqId=request.getParameter("u_trackingRequestID");
%>
<form id="frmReleaseDetail" name="frmReleaseDetail" action="process.jsp" method="post">
<input type="hidden" name="u_trackingRequestID" id="u_trackingRequestIDVal" value="<%=newTrackingReqId%>"/>
//jdbc code
//100's checkbox named checkBoxVer
//button to invoke submitChecked javascript function
</form>
</body>
</html>
For anyone making noob (newbie) mistakes:
1: Type is "submit" NOT "button"
GOOD/CORRECT:----------------------------------------------
<input type="submit" value="some_button_label" />
BAD/INCORRECT:----------------------------------------------
<input type="button" value="some_button_label" />
2: Submit button needs to be nested inside the form.
GOOD/CORRECT:----------------------------------------------
<form action="cookies-personalize-response.jsp">
SEL_YOUR_FAV_PROG_LANG
<select name="fav_lan">
<option>LANG_01</option>
<option>LANG_02</option>
<option>LANG_03</option>
</select>
<input
type ="submit"
value="some_button_label"
/>
</form>
BAD/INCORRECT:------------------------------------------------
<form action="cookies-personalize-response.jsp">
SEL_YOUR_FAV_PROG_LANG
<select name="fav_lan">
<option>LANG_01</option>
<option>LANG_02</option>
<option>LANG_03</option>
<option>LANG_04</option>
</select>
</form>
<input
type ="submit"
value="some_button_label"
/>
3: Referesh page after fix, view source in browser to make sure actually changed.
As silly as the last answer is, it is actually the one that I got stuck on the longest.
Related
Apologies if this question isn't layed out correctly (my first time using stack overflow).
I'm trying to validate if my inputs on a form are filled in when a user presses submit, it alerts the user when the inputs are empty but also when they are not, I'm not sure whats going wrong. Here is my Javascript:
<script>
function validation() {
var x = document.forms["bookingForm"]["id"].value;
if (x == "") {
alert("Ensure all fileds are filled");
return false;
} else {
sendSMS();
alert("Success");
return true;
}
}
</script>
Here is a link to an expanded part of the code for reference:https://pastebin.com/Dj5fA3gB
The general syntax for accessing a form element and element's value are:
document.forms[number].elements[number]
document.forms[number].elements[number].value
If you are using submitButton as in and you are calling validation on onSubmit of the form then you need to call event.preventDefault();
<!DOCTYPE html>
<html>
<body>
<form onsubmit="validation()" name="bookingForm">
First Name: <input type="text" name="id" value="Donald"><br>
Last Name: <input type="text" name="lname" value="Duck">
<input type="submit" value="Submit" />
</form>
<script>
function validation() {
event.preventDefault();
var x = document.forms["bookingForm"]["id"].value;
if (x == "") {
alert("Ensure all fileds are filled");
return false;
} else {
sendSMS();
alert("Success");
return true;
}
}
</script>
</body>
</html>
As suggested in my comment the most clean solution is to use the html attribute required by adding it to your inputs.
Looks something like this.
<form>
<input type="text" name="example" required>
<input type="submit" name="send">
</form>
The biggest advantage is that it works without any additional JS which is in my opinion always the prefered solution.
You didn't include return keyword in the form tag and adding unnecessary keyword "name" in the form tag.
<form onsubmit="return validation()" method="POST"
action="">
remove the "name" attribute from form tag and add action attribute.
Within the parenthesis in the action attribute, mention what happen if your validation success
Ex:(this code help you understand "action" attribute)
<form onsubmit="return productsvalidationform();" method="POST"
action="AddProductServlet">
when the form was successfully validated, I directed to AddProductServlet.(AddProductServlet is JSP servlet).
so that mention where do you need to redirect.
I want to display a confirmation dialog box like "Do you want to continue?" If "yes", I want to popup a message displaying form output, if "No" I want to stay on the same page.
In the code shown below I am navigating to facto.html for displying the output, but I want to show a popup with its contents instead. How can I do that?
My index.html:
<!DOCTYPE html>
<html>
<head>
<title>Lift From Scratch</title>
<script type="text/javascript">
<!--
function getConfirmation(){
var retVal = confirm("Do you want to continue ?");
if( retVal == true ){
<!--document.write("continue")-->
<!--window.location.href = '/facto.html';-->
return true;
}
else{
alert("Don't continue")
<!--window.location.href = 'index.html';-->
return false;
}
}
//-->
</script>
</head>
<body>
<h1>Finding Factorial</h1>
<div id="main" class="lift:surround?with=default&at=content">
<form method="post">
<table>
<tr><td> Enter a Number:</td> <td><input name="num" type="number"></td></tr>
<tr><td><input type="submit" value="Submit" onclick="getConfirmation();" formaction="facto"></td>
<td><input type="reset" value="Reset"></td>
</tr>
</table>
</form>
</div>
</div>
</body>
</html>
facto.html:
<div data-lift="factorial">
<p>Factorial is: <span name="paramname"></span></p>
</div>
Try something like this:
function validateMyForm()
{
if( confirm('Are you sure?') )
return true; // will submit the form
else
return false; // do not submit the form
}
<form name="myForm" onsubmit="return validateMyForm();">
<input type="submit" value="Submit" />
</form>
You're going to probably want to fall back to JavaScript for this one, to be honest. You can make the form an AJAX form using Lift's SHtml.makeFormsAjax helper, then you can bind your submit button using SHtml.ajaxSubmit. The callback you pass to ajaxSubmit should return a JsCmd. That JsCmd can trigger the display of the popup. You can even render the popup's contents by using SHtml.idMemoize.
If you describe this question in a little more detail on the Lift group, you will probably find folks willing to help you with some of the more specific aspects of it.
I want to verify the inputs by javascrpit function perform() and move to a php page named i.php to save the datas in the databasse.
Here is the code:
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<form action="i.php" method="post">
<br>
Name <input type="text" name="name" id="name" >
<span id="err"></span>
</br>
<br>
Password <input type="Password" name="Password" id="password">
<span id="perr"></span>
</br>
<br>
Gender
<input type="radio" name="gender" id="gender" value="male">Male
<input type="radio" name="gender" id="gender" value="female">Female
</br>
<br>
Department <select name="department" id="department">
<option>------</option>
<option>ECE</option>
<option>BBA</option>
<option>ENG</option>
</select>
</br>
<br>
<button name="btn" type="button" id="btn" onclick="perform()" >Button</button>
<input type="submit" name="submit" value="Submit">
<input type="reset" name="reset" value="Clear">
</br>
</form>
<script type="text/javascript">
function perform()
{
var name = document.getElementById('name').value;
var pass = document.getElementById('password').value;
var dept = document.getElementById('department').value;
var gender = document.getElementsByName('gender');
var r =3;
if (name.length==0)
{
document.getElementById('err').innerHTML = "name not found";
r++;
}
if (pass.length<=6 || pass.length>=32 )
{
document.getElementById('perr').innerHTML = "password error";
r++;
}
if(r==3)
{
window.location= "i.php";
}
}
</script>
</body>
</html>*
In i.php page i used var_dump to see the datas whether it has been submitted or not. code of the i.php page:
<!Doctype html>
<html>
<head></head>
<body>
<?php
var_dump($_POST);
?>
</body>
</html>
But its showing arry(0) {}
looks like there nothing that has been submitted.
The issue is that you're redirecting with javascript, and losing the entire form and it's data by doing so.
When the form is valid, submit it rather than redirecting
function perform() {
var _name = document.getElementById('name').value;
var pass = document.getElementById('password').value;
var dept = document.getElementById('department').value;
var gender = document.getElementsByName('gender');
var valid = true;
if (_name.length === 0) {
document.getElementById('err').innerHTML = "name not found";
valid = false;
}
if (pass.length <= 6 || pass.length >= 32) {
document.getElementById('perr').innerHTML = "password error";
valid = false;
}
if (valid) {
document.querySelector('form').submit();
}
}
Note that name is not a good name for variables or form elements, as it already exists in window.name, and that a submit button can not be named submit as it overwrites the named form.submit() function
Another option would be to just remove all the javascript, and use HTML5 validation instead.
Use this code:
<form action="i.php" method="post" onsubmit="perform();">
And in javascript make these changes:
if(r!=3) {
alert('please complete the form';
return false;
}
Javascript doesn't send POST headers with window.location!
By using this code, you don't need to use a button, javascript perform() function runs when the submit button is clicked in the form.
If form values are entered truly, javascript perform() does not return and form submits; else, the function returns and prevents submitting the form.
The problem is you are not submitting the form you are just going to a different page with javascript without passing along any variables. so instead of doing
window.location= "i.php";
you should submit the form like so
document.getElementById("formId").submit();
so you should give the form the id formId
The problem is that you are merely redirecting to the i.php page without posting any data. Replace this line in your JS:
window.location = "i.php";
with this
document.getElementsByTagName('form')[0].submit();
This will find the form in your DOM and submit it along with the data that has been input, preserving the values for your action page.
You also need to rename your submit-button for this to work. Otherwise you will not be able to call the submit function on the form programmatically.
<input type="submit" name="submit-btn" value="Submit" />
should do the trick. However, I don't really see the point of the submit button in addition to your validation/submission button.
Full code sample of the solution here: https://jsfiddle.net/dwu96jqw/1/
by press btn you redirect only and your form dont submitted for transfer via _POST
you should change your code :
<form action="i.php" method="post" id ="form1">
and :
if(r==3)
{
form1.submit();
}
window.location will redirect you to the page, to preserve field values return it
if(r==3)
{
return true;
}
I'm trying to check if a form type button has been pressed after i submit the form with javascript:
<script>
function DeleteIt(string){
var pattern = string.indexOf('_');
var prof_nr = string.substr(pattern+1);
var delete = confirm("Want to delete it?");
if( delete == true ){
document.forms['form'].submit();
}else{
alert('Cancel');
}
}
</script>
<form method="POST" name="form">
<input type="button" name="delete" value="Delete" id="prof_'.$row['code'].'" onclick="DeleteIt(this.id);">
</form>
if(isset($_POST['delete'])){
echo 'Pressed';
}
But it doesn't run into the condition though it has been pressed.
I can't use a submit type,because i already have one in the form , which is used for a search field.Whenever i type something and hit enter,it triggers the function,that's why i use button.
You have used so many language keywords as variable names in your code like delete, string.
You can not use reserved words of a programming language as your
variable names.
This is the working code-
<script type="text/javascript">
function DeleteIt(string1){
var pattern = string1.indexOf('_');
var prof_nr = string1.substr(pattern+1);
var delete1 = confirm("Want to delete it?");
if( delete1 == true ){
document.forms['form'].submit();
}else{
alert('Cancel');
}
}
</script>
<form method="POST" name="form">
<button name="delete" id="prof_'.$row['code'].'" onclick="DeleteIt(this.id);">delete</button>
</form>
<?php
if(isset($_POST['delete'])){
echo 'Pressed';
}
I guess a button, which is used to submit a form, will not submit its own value.
Since you do not want the form to be submitted by pressing the enter key, my idea is to add a hidden field which tells you what to do. The following code adds such a hidden field named specialAction, which is normally set to save. When the delete button is pressed, however, its value is changed to delete. In PHP, you would have to check the field's value then:
<!DOCTYPE html>
<html>
<head>
<title>Title</title>
</head>
<body>
<script type="text/javascript">
function DeleteIt(id){
var pattern = id.indexOf('_');
var prof_nr = id.substr(pattern+1);
var deleteVar = confirm("Want to delete it?");
if( deleteVar == true ){
document.forms['form']['specialAction'].value = "delete";
document.forms['form'].submit();
}else{
alert('Cancel');
}
string
}
</script>
<form method="POST" name="form">
<input type="hidden" id="specialAction" name="specialAction" value="save">
<input type="text" name="testPurpose" value="Hit enter after focusing">
<input type="button" value="Delete" name="delete" id="prof_test" onclick="DeleteIt(this.id);">
</form>
<?php
if(isset($_POST['specialAction'])) echo $_POST['specialAction'];
?>
</body>
</html>
A side note: Do not use delete as a variable name, because it is already used as an operator. Also, you should tell the browser to interpret JavaScript using <script type="text/javascript"> and not just <script>.
I have some javascipt code here that validates a user form. When the user inputs the correct answer it tells them and gives them the link to the next question. At least, that's what it is supposed to do. When i click the form it reloads the page but it should not because i added return false.
the div tra holds 35
and the div usermsg is the user inputted value.
<script>
$("#submit").click(function(){
var clientmsg6 = $("#usermsg").val();
var rightanswer = $("#tra").val();
if (clientmsg6<>rightanswer)
{
$("#confirm").html("<h2>Sorry, wrong answer.</h2>");
}
else
{
$("#confirm").html("<a href='#' onclick='play();' style='font-size:20px;' id='new1'>Click here for Question 2</a>");
}
return false;
});
</script>
Any ideas why this is not working?
It should be
if (clientmsg6 != rightanswer)
not
if (clientmsg6<>rightanswer)
To prevent a form submission, you need to return false on the form itself instead of on the submit button. Your code should become:
HTML
<form action="page.php" method="post">
<input id="usermsg" type="text" name="answer" />
<input id="submit" type="submit" value="Submit" />
</form>
JS (please note the line where you have clientmsg6, you have a syntax error)
$("#myform").on('submit', function(){
var clientmsg6 = $("#usermsg").val();
var rightanswer = $("#tra").val();
if (clientmsg6 != rightanswer) { //This line was also wrong, should be != instead of <>
$("#confirm").html("<h2>Sorry, wrong answer.</h2>");
}
else {
$("#confirm").html("<a href='#' onclick='play();' style='font-size:20px;' id='new1'>Click here for Question 2</a>");
}
return false;
});
Alternatively, you can keep your existing code by changing your submit button to be just a plain old button, but you will lose the extra functionality of the user being able to hit the enter key and performing the same action.
<form action="page.php" method="post">
<input id="usermsg" type="text" name="answer" />
<input id="submit" type="button" value="Submit" />
</form>
Instead of using .html(), try using .text()
if #submit is a link tag otherwise use the form ID and the submit event
$("#submit").click(function(e){
e.preventDefault()
...
...
...
});
You need to attach handlers once the document has finished loading.
Wrap your script in the following
<script>
$(function() {
// script
});
</script>