Develop Reference

How to split one field in two and submit as one

I have Full name in my form as one input box but I want to make it split in two input boxes
box1= First Name
box2= Last Name
and when submit button is pressed, the value is saved as box1+box2 in the same old full name data scheme in my mysql database.
Here is my current code.
<td colspan="2"><span class="smalltext"><label for="username">{$lang->username}</label></span></td>
</tr>
<tr>
<td colspan="2"><input type="text" class="textbox" name="username" id="username" style="width: 100%" value="" /></td>
</tr>
and here is full page code
<form action="member.php" method="post" id="registration_form"><input type="text" style="visibility: hidden;" value="" name="regcheck1" /><input type="text" style="visibility: hidden;" value="true" name="regcheck2" />
{$regerrors}
<table border="0" cellspacing="{$theme['borderwidth']}" cellpadding="{$theme['tablespace']}" class="tborder">
<tr>
<td class="thead" colspan="2"><strong>{$lang->registration}</strong></td>
</tr>
<tr>
<td width="50%" class="trow1" valign="top">
<fieldset class="trow2">
<legend><strong>{$lang->account_details}</strong></legend>
<table cellspacing="0" cellpadding="{$theme['tablespace']}" width="100%">
<tr>
<td colspan="2"><span class="smalltext"><label for="fullname">{$lang->fullname}</label></span></td>
</tr>
<tr>
<td colspan="2"><input type="text" class="textbox" name="fullname" id="fullname" style="width: 100%" value="fullname" /></td>
</tr>
{$passboxes}
<tr>
<td><span class="smalltext"><label for="email">{$lang->email}</label></span></td>
<td><span class="smalltext"><label for="email2">{$lang->confirm_email}</label></span></td>
</tr>
<tr>
<td><input type="text" class="textbox" name="email" id="email" style="width: 100%" maxlength="50" value="{$email}" /></td>
<td><input type="text" class="textbox" name="email2" id="email2" style="width: 100%" maxlength="50" value="{$email2}" /></td>
</tr>
<tr>
<td colspan="2" style="display: none;" id="email_status"> </td>
</tr>
{$hiddencaptcha}
</table>
</fieldset>
<div align="center">
<input type="hidden" name="step" value="registration" />
<input type="hidden" name="action" value="do_register" />
<input type="submit" class="button" name="regsubmit" value="{$lang->submit_registration}" />
</div>
</form>```

You can concatenate the values in your php file and store them in your database column.
I can explain it more in detail if you share your php file.

I'm going to give you a frontend solution (because of the tags attached to the question), which could work if:
You just need a quick fix
This is a one-time problem
You know that this won't create complications in the future
Other than that, I highly recommend you do this in the backend.
The idea here is to create a hidden fullname input and use javascript to concatenate the first and last name.
const name = {
firstName: '',
lastName: ''
}
document.querySelector('[name="firstName"]').addEventListener('input', (e) => {
name.firstName = e.target.value
updateFullName()
})
document.querySelector('[name="lastName"]').addEventListener('input', (e) => {
name.lastName = e.target.value
updateFullName()
})
function updateFullName() {
document.querySelector('[name="fullname"]').value = `${name.firstName} ${name.lastName}`
}
<form>
<input type="text" name="firstName">
<input type="text" name="lastName">
<input type="hidden" name="fullname">
</form>

Pre-populating form fields with the row data by clicking on the row

Please help if you are seeing this.I want to pre-populate the form-field with row data after clicking on the same row.
SIMILAR TO THIS DEMO:http://jsbin.com/qavugo/2/edit?html,js,output
Problem is faced now. fillForm() function is OK(AS SHOWN IN THE DEMO inside the scripts) in order to populate the form field with row data.HOW DO I GET ROW DATA? But as I am populating the table using jsp like this
<table class="data-table" id="test" border="1">
<tr>
<td>Student ID</td>
<td>First Name</td>
<td>Last Name</td>
<td>Year Level</td>
</tr>
<c:foreach items="${allStudents}" var="stud">
<tr>
<td>${stud.studentId}</td>
<td>${stud.firstname}</td>
<td>${stud.lastname}</td>
<td>${stud.yearLevel}</td>
</tr>
</c:foreach>
</table>
Which makes it more difficult for me for getting the rowData than what is showed in the DEMO.
MY FORM
<form name="frm" class="data-form" action="./StudentServlet" method="POST" onsubmit="return validateForm()">
<tr>
<td>
<label>Student ID --></label><input type="text" name="studentId" value="${student.studentId}" />
</td>
<td>
<label>First Name --></label><input type="text" name="firstname" value="${student.firstname}" />
</td>
<td>
<label>Last Name --></label>
<input type="text" name="lastname" value="${student.lastname}" />
</td>
<td>
<label>Year Level --></label><input type="text" name="yearLevel" value="${student.yearLevel}" />
</td>
</tr>
</form>
THE SCRIPTS
$(function() {
// I am not using dummy data here.
var rowData = [
// how and what should go here.Please help
];
row.on("click", function() {
fillForm(rowData);
});
return row;
});
$(".data-table").append(rows);
function fillForm(rowData) {
var form = $(".data-form");
form.find("input.value1").val(rowData.value1);
form.find("input.value2").val(rowData.value2);
form.find("input.value3").val(rowData.value3);
form.find("input.value4").val(rowData.value4);
}
I am updating the records like this
<table>
<tr>
<td colspan="5">
<input type="submit" name="action" value="Add" />
<input type="submit" name="action" value="Edit" />
<input type="submit" name="action" value="Delete" />
<input type="submit" name="action" value=Refresh />
</td>
</tr>
</table>
I am getting an error after clicking the/add/edit/delete button
Warning: StandardWrapperValve[StudentServlet]: Servlet.service() for servlet StudentServlet threw exception
java.lang.NumberFormatException: For input string: " "
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:569)
at java.lang.Integer.parseInt(Integer.java:615)
at com.joseph.controller.StudentServlet.processRequest(StudentServlet.java:35)
at com.joseph.controller.StudentServlet.doPost(StudentServlet.java:99)

That demo looks way too complicated for the task at hand. There's really no need to work with class references. You could simplify your approach by doing the following:
HTML:
<h1>Student Info:</h1>
<form class="data-form">
<label>Student ID
<input type="text" />
</label>
<label>First Name
<input type="text" />
</label>
<label>Last Name
<input type="text" />
</label>
<label>Year Level
<input type="text" />
</label>
</form>
<table class="data-table" id="test">
<thead>
<tr>
<th>Student ID</th>
<th>First Name</th>
<th>Last Name</th>
<th>Year Level</th>
</tr>
</thead>
<tr>
<td>1</td>
<td>Frank</td>
<td>Sinatra</td>
<td>5</td>
</tr>
<tr>
<td>2</td>
<td>Miles</td>
<td>Davis</td>
<td>4</td>
</tr>
<tr>
<td>3</td>
<td>Tom</td>
<td>Waits</td>
<td>6</td>
</tr>
</table>
JS:
$(document).ready(function () {
$("td", this).on("click", function () {
var tds = $(this).parents("tr").find("td");
$.each(tds, function (i, v) {
$($(".data-form input")[i]).val($(v).text());
});
});
});
The only condition for this to work is that the input order in the form needs to match the column order in the table. Here's a working JSFiddle for reference.

YOUR Form (data-form)tag includes your edit/delete/ update inputs.Keep that out of your form tag.Then the java.lang.NumberFormatException: For input string: " will not take place.See if it works.
I tried adding the code further as mentioned above.It did not worked well.I am facing same dilemma.Anyone plz tell where is it going wrong?
<script>
$(function()
row.on("click", function() {
$('INPUT', this).each(function(i){
rowData['value' + (i+1)] = this.value;
});
fillForm(rowData);
});
function fillForm(rowData) {
var form = $(".data-form");
form.find("input.value1").val(rowData.value1);
form.find("input.value2").val(rowData.value2);
form.find("input.value3").val(rowData.value3);
form.find("input.value4").val(rowData.value4);
}
}
</script>

Try adding this to the on.cick function
row.on("click", function() {
$('INPUT', this).each(function(i){
rowData['value' + (i+1)] = this.value;
});
fillForm(rowData);
});

Javascript - Read textbox length

I am trying to read the length of a textbox from my register form. I have tried using document.getElementById() and textbox.value.length. Is there something very simple I'm am missing. I alert the result to the screen to show the textbox length. Thanks in advance.
Here is my last attempt:
function Register(){
Alert(RegisterForm.txt_Password.value.length);
}
TextBox structure:
<form id="RegisterForm" name="RegisterForm" method="POST" action="RegisterInsert.php" onsubmit="return Register(RegisterForm)">
<table border="0" align="center" width="100%">
<tr>
<td width="15%">Email Address:</td>
<td width="85%"><input type="text" name="txt_Email" id="txt_Email"/> </td>
</tr>
<tr>
<td width="15%">Username:</td>
<td width="85%"><input type="text" autocomplete="off" name="user_name" id="user_id" class="user_name" >
<span class="check" ></span></td>
</tr>
<tr>
<td width="15%">Password:</td>
<td width="85%"><input type="password" name="txt_Password" id="txt_Password" /></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td><input type="submit" name="btn_Register" id="btn_Register" value="Register"></td>
</tr>
<tr>
</table>
<p> </p>
</form>
I use the submit button to call the Register function.

You need to get a reference to the element first:
function Register() {
var RegisterForm = document.getElementById('RegisterForm');
alert(RegisterForm.elements['txt_Password'].value.length);
}

check out this code:
var textBox = document.getElementById("myTextBox");
var textLength = textBox.value.length;

alert(document.getElementById('txt_Password').value.length);

Instruction error outside javascript function

I'm making a form with a submit button to check login and a link to make a new user!
I'm coding this with:
<script language="javascript">
function new_user()
{
document.getElementById("login").value='registo';
}
</script>
<form id="frmLogin" name="frmLogin" method="post" action="#">
<table>
<tr>
<td><label for="username">Nome do utilizador</label></td>
<td><input type="text" name="username" id="username" /></td>
</tr>
<tr>
<td><label for="password">Palavra-passe</label></td>
<td><input type="text" name="password" id="password" /></td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="OK" id="OK" value="Submit"/></td>
</tr>
<tr>
<td><input type="hidden" name="login" id="login" value="login"/></td>
<td>Novo Utilizador</td>
</tr>
</table>
</form>
I want to use a hidden field to know if the user pressed the button or the link.
To make the code smaller I'd like to use this code instead:
<form id="frmLogin" name="frmLogin" method="post" action="#">
<table>
<tr>
<td><label for="username">Nome do utilizador</label></td>
<td><input type="text" name="username" id="username" /></td>
</tr>
<tr>
<td><label for="password">Palavra-passe</label></td>
<td><input type="text" name="password" id="password" /></td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="OK" id="OK" value="Submit"/></td>
</tr>
<tr>
<td><input type="hidden" name="login" id="login" value="login"/></td>
<td>Novo Utilizador</td>
</tr>
</table>
</form>
Can anyone explain me why this doesn't work?

You might be having a quote clash in the definition of the onclick event handler. Your browser is interpreting it as onclick="document.getElementById(".
Try enclosing the argument of the document.getElementById sentence in single quotes.
onclick="document.getElementById('login').value='registo';document.frmLogin.submit();">

You can use it as below
<td>Novo Utilizador</td>
use single quote for getElementById that will solve it.

how to make this java script run in my form?

When the people fill my from, I want them to use an enter button like a tab button to fill all the form. So i have put javascript code into my form. But it doesn't work....
Can someone tell me why this code didn't work? I use internet explorer 9, Google chrome and Mozilla Firefox to try it, but doesn't work also...
<!--<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Untitled Document</title>-->
<script type="text/javascript">
function noenter() {
if(window.event && window.event.keyCode == 13);
myform.submit();
else
return true;}
</script>
</head>
<body>
<form name="form1" method="post" action="berjaya.php" onSubmit="return submitOK">
<table width="35%" border="1" align="center">
<tr>
<td colspan="3">Please fill the form bellow</td>
</tr>
<tr>
<td width="21%">first name</td>
<td width="2%">:</td>
<td width="77%"><label>
<input type="text" onkeypress="return noenter()" name="fname" id="fname">
</label></td>
</tr>
<tr>
<td>last name</td>
<td>:</td>
<td><label>
<input type="text" onkeypress="return noenter()" name="lname" id="lname">
</label></td>
</tr>
<tr>
<td>age</td>
<td>:</td>
<td><label>
<input type="text" onkeypress="return noenter()" name="age" id="age">
</label></td>
</tr>
<tr>
<td>date of birth</td>
<td>:</td>
<td><label>
<input type="text" onkeypress="return noenter()" name="dobirth" id="dobirth">
</label></td>
</tr>
<tr>
<td>home town</td>
<td>:</td>
<td><input type="text" onkeypress="return noenter()" name="htown" id="htown"></td>
</tr>
<tr>
<td colspan="3"><label>
<input type="submit" name="button" id="button" value="Submit" onClick="submitOK=true">
</label></td>
</tr>
</table>
</form>
</body>
</html>-->

If you'd actually bothered to READ that JavaScript you've copypastaed into your form, you'd reliaze that it actually TRIGGERS the form submission anytime the enter key is pressed on any of your input boxes.
If you want to disable the enter key, then you have to return false, not do form.submit().