Develop Reference

Javascript - copy date/time in each new row

I have a form with this filed and by ADD button I can add rows: book_date[], book_desc[], book_pages[].
<form method="POST" action="addpages.php" name="books" onmouseover="javascript:sum();">
<button type="button" onClick="addRow('dataTable')"> ADD Book </button>
<table id="dataTable" class="form">
<input type="text" class="form-control" name="date_book[]">
<input type="text" class="form-control" name="book_pages[]">
<input type="text" class="form-control" name="book_pages_total">
</table>
</form>
When add a new row I want the value inside the first filed date_book was copyed in the new row.
I try ti use this start script, but this not work for new row.
var $date_book= $("#date_book[]");
$date_book.on("keydown",function(){
setTimeout(checkValue,0);
});
var v2 = $date_book[].val();
var checkValue = function(){
var v1 = $field1.val();
if (v1 != v2){
$date_book[].val(v1);
v2 = v1;
}
};
How to copy the date values write in in the filed date_book[] in each new row?
I hope to explain my problem.
Thanks

You should start with valid HTML, an input can't be a child of a table. I've just mocked–up something based on the names.
After fixing that, in POJS you can just clone the last row and add it to the table. That will also clone whatever values the form controls happen to have at the time, so if you only want to keep the first value, then do that and clear the others, e.g.
function addRow(tableId) {
var table = document.querySelector('#' + tableId);
var lastRow = table.rows[table.rows.length - 1];
// Create a new row by cloning the last one
var newRow = lastRow.cloneNode(true);
var inputs = newRow.querySelectorAll('input');
// Clear all but first input
[].forEach.call(inputs, (input, i) => {if (i) input.value = '';});
// Add the row to the table
lastRow.parentNode.appendChild(newRow);
}
<form name="books">
<button type="button" onClick="addRow('dataTable')"> ADD Book </button>
<table id="dataTable" class="form">
<tr>
<td>Date:
<td><input type="text" class="form-control" name="date_book[]">
<td>Pages:
<td><input type="text" class="form-control" name="book_pages[]">
<td>Pages total:
<td><input type="text" class="form-control" name="book_pages_total">
</table>
</form>

How do I repeat the piece of html code 10 times by clicking on the same button using JS/Jquery?

I want to be able to display the same piece of html code 10 times under the div called: <div id="add_remove_product_name"> By clicking on the button called: <button id="add_another_product_name">. I think I need some kind of a for loop for the job but are not sure. Any suggestion will be helpful, thanks.
My HTML code:
<div id="product_name">
<input id="skriv_produktnavn" placeholder="Skriv Produktnavn her" required></label>
<button id="add_another_product_name">Tilføj endnu et produktnavn</button>
<div id="add_remove_product_name">
<input id="added_product_name" placeholder="Skriv Produktnavn her" required></label>
<button id="remove_product_name">X</button>
</div>

Use a for loop to concatenate 10 copies of the HTML code. Then use .after() to put this after the DIV.
$("#add_another_product_name").click(function() {
var html = '';
for (var i = 0; i < 10; i++) {
html += 'html code that you want to repeat';
}
$("#add_remove_product_name").after(html);
}

You can use jQuery clone() however when cloning an element all the attributes will be the same. Fo example they will all have the same id attribute which will cause problems and it is not valid html
So in order to do the clone correctly you have fix the cloned element
DEMO: http://jsfiddle.net/rpyt445e/
var $tpl = $('#product_name').clone();
var num = 0
$('#clone').click(function () {
num++;
var $cloned = $tpl.clone();
$cloned.attr('id', $tpl.attr('id') + '_' + num);
$(':not([id=""])', $cloned).each(function(){
$(this).attr('id', $(this).attr('id') + '_'+num);
});
$cloned.appendTo('#wrapper');
});
HTML:
<div id="wrapper">
<div id="product_name">
<input id="skriv_produktnavn" placeholder="Skriv Produktnavn her" required />
<button id="add_another_product_name">Tilføj endnu et produktnavn</button>
<div id="add_remove_product_name">
<input id="added_product_name" placeholder="Skriv Produktnavn her" required />
<button id="remove_product_name">X</button>
</div>
</div>
</div>
<button id="clone">Clone</button>

A technique for adding the additional elements without having to create ugly strings of html in the JavaScript is to start with one hidden set of the elements in the html. At page load time, you remove that set, but keep a reference to it. Then when you want to add a set to the page, you clone the set you removed. All of this is easier if you add a container div around the additional inputs.
You also need to make sure id attribute values are unique. In the case of the remove buttons, you can replace the id with a class. As for the input id values, if you really need them, you can add an index value to them.
Since the remove buttons are dynamically added, I suggest using event delegation when binding the click-handler.
HTML:
<div id="product_name">
<input id="skriv_produktnavn" placeholder="Skriv Produktnavn her" required="required"/>
<button id="add_another_product_name">Tilføj endnu et produktnavn</button>
<div id="additional_product_names">
<div class="add_remove_product_name" style="display: none;">
<input id="added_product_name" placeholder="Skriv Produktnavn her" required="required"/>
<button class="remove_product_name">X</button>
</div>
</div>
</div>
JavaScript:
$(function() {
var MAX = 10;
var $addBtn = $('#add_another_product_name'),
$additionalContainer = $('#additional_product_names');
$TEMPLATE = $additionalContainer.children(':first').remove();
function update() {
var $additonalDivs = $additionalContainer.children();
// Enable/disable the add button.
$addBtn.prop('disabled', $additonalDivs.length >= MAX);
// Re-index the "id" attributes.
$additonalDivs.find('input').attr('id', function(i) {
return 'added_product_name[' + i + ']';
});
}
$addBtn.click(function() {
$TEMPLATE.clone().appendTo($additionalContainer).show();
update();
});
$('#product_name').on('click', '.remove_product_name', function() {
$(this).closest('.add_remove_product_name').remove();
update();
});
});
jsfiddle

Issue with creating clones of HTML div using JQuery

I am trying to create clones of a HTML div. The div has a label and two text boxes inside it. I need to change the label value of the newly created div. Here is my code.
<body>
<div id="PayDiv2">
<label id="PayLbl2">Payment No 2: </label>
<input type="text" />
<input type="text" />
</div>
<div id ="totPayForm" >
<label id="totPayLbl">Total Payment: </label>
<input type="text" />
<input type="text" />
<input type="submit" value="Add new one" onclick="addNewField();
return false;">
</div>
<input type="button" value="Clone box" id="btn" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script>
var i=3;
//When DOM loaded we attach click event to button
$(document).ready(function() {
$('#btn').click(function() {
var cloned = $('#PayDiv2').clone();
cloned.insertBefore("#totPayForm");
$('#PayLbl2').html("Payment No "+ i++ + ':');
});
});
</script>
</body>
The problem is the place the newly created clones placed. First clone get placed before everything(even though I need to place it after the original div which I used to create divs. )
divs generated after that also get placed at first and, early divs goes down. It is hard to describe here. If you can be kind enough to run my code you will see what the issue is.
I have an another requirement to generate unique ids to cloned divs. Since I am new in JQuery, I found it difficult to generate id's.
I am pleased if you can help me in this case. Thank you all.

The problem is $('#PayLbl2').html("Payment No "+ i++ + ':'); it always changes the first element's label instead of the clone(because of the duplicated ids)...
so use class instead of id
<div class="PayDiv2">
<label class="PayLbl2">Payment No 2:</label>
<input type="text" />
<input type="text" />
</div>
then
var i = 3;
//When DOM loaded we attach click event to button
$(document).ready(function () {
$('#btn').click(function () {
var cloned = $('.PayDiv2').first().clone();
cloned.insertBefore("#totPayForm");
cloned.find('.PayLbl2').html("Payment No " + i+++':');
});
});
Demo: Fiddle

Here it is.
Demo
Make your HTML like below
<div id="PayDiv0" class="PayDiv0">
<label id="PayLbl0" class="PayLbl2">Payment No 2:</label>
<input type="text" />
<input type="text" />
</div>
<div id="totPayForm">
<label id="totPayLbl">Total Payment:</label>
<input type="text" />
<input type="text" />
<input type="submit" value="Add new one" onclick="addNewField();
return false;">
</div>
<input type="button" value="Clone box" id="btn" />
And JS should be like this
var i = 3;
$(document).ready(function () {
$('#btn').click(function () {
var cloned = $('.PayDiv0').first().clone();
var noOfDivs = $('.PayDiv0').length;
cloned.insertBefore("#totPayForm");
cloned.attr('id', 'PayDiv' + noOfDivs);
cloned.find('label').attr('id', 'PayLbl' + noOfDivs);
cloned.find('.PayLbl2').html("Payment No " + i+++':');
});
});

As mentioned in the answer by #Arun P Johny, set the div id PayDiv0
$('#btn').click(function () {
var cloned = $('.PayDiv2').first().clone();
// find total divs with class PayDiv2
var noOfDivs = $('.PayDiv2').length;
cloned.insertBefore("#totPayForm");
// add new id to the cloned div
cloned.attr('id', 'PayDiv' + noOfDivs);
// find the label element inside new div and add the new id to it
cloned.find('label').attr('id', 'PayLbl' + noOfDivs);
cloned.find('.PayLbl2').html("Payment No " + i+++':');
});
this way you can add the dynamic ids to your elements.

Append table row to table using getElementByID?

I want to be able to append an additional row to my table. The way the code is now, it just adds two input boxes outside of the table regardless of where I insert it. When I inspect in my browser, it looks like the table tags have been stripped, is there something wrong with using the getElementByID function?.
My Hidden row to be added to the table:
<div id="rowToBeAdded" style="display: none">
<tr>
<td><input type="button" value="Remove" onclick="this.parentNode.parentNode.removeChild(this.parentNode);" /></td>
<td><input style="margin-right:2em;" type="text" value="" name="newLinkTitle[]" size="50" /></td>
<td><input type="text" value="http://" name="newLinkAddress[]" size="50" /></td>
</tr>
</div>
After the last </tr> of my table I have:
<span id="addRowHere">
<input type="button" id="moreFields" value="Add more links" onclick="init()" />
</span>
And here's my Javascript:
function init() {
document.getElementById('moreFields').onclick = moreFields;
moreFields();
}
function moreFields() {
var newFields = document.getElementById('rowToBeAdded').cloneNode(true);
newFields.style.display = 'block';
var newField = newFields.childNodes;
var insertHere = document.getElementById('addRowHere');
insertHere.parentNode.insertBefore(newFields,insertHere);
}

Try this
http://jsfiddle.net/blackjim/yGVWM/3/ EDIT: fixed the remove button
document.getElementById('moreFields').onclick = addMoreFields; // set binding
var newRow = document.getElementById('rowTemplate').cloneNode(true),
myTable = document.getElementById('myTable');
function addMoreFields() {
myTable.appendChild(newRow.cloneNode(true));
}
And you should make a function for removing a line also. Try it yourself. And use classes and id to get your elements.

Getting input values from text box

I'm trying to get the text from a text box.
I have 2 input text boxes that are not in a form, and I'm trying to retrieve the value and store it in a variable.
This code returns undefined in the alert box that pops up.
<script>
var userPass = document.getElementById('pass');
var userName = document.getElementById('fName');
function submit(){
alert(userPass.value);
}
</script>
When I run it with userName.value as a parameter in the alert function, it will work and display what ever you type in the box.
Here is the html:
<table id="login">
<tr>
<td><label>User Name</label></td>
</tr>
<tr>
<td colspan="2"><input class="textBox" id="fName" type="text" maxlength="30" required/></td>
</tr>
<tr>
<td id="pass"><label>Password</label></td>
<tr>
<td colspan="2"><input class="textBox" id="pass" type="text" maxlength="30" required/></td>
</tr>
<tr>
<td><input type="button" class="loginButtons" value="Login" onclick="submit();"/>&nbsp&nbsp&nbsp
<input type="button" class="loginButtons" value="Cancel"/></td>
</table>

You will notice you have no value attr in the input tags.
Also, although not shown, make sure the Javascript is run after the html is in place.

<script>
function submit(){
var userPass = document.getElementById('pass');
var userName = document.getElementById('user');
alert(user.value);
alert(pass.value);
}
</script>
<input type="text" id="user" />
<input type="text" id="pass" />
<button onclick="submit();" href="javascript:;">Submit</button>

// NOTE: Using "this.pass" and "this.name" will create a global variable even though it is inside the function, so be weary of your naming convention
function submit()
{
var userPass = document.getElementById("pass").value;
var userName = document.getElementById("user").value;
this.pass = userPass;
this.name = userName;
alert("whatever you want to display");
}

you have multiple elements with the same id. That is a big no-no. Make sure your inputs have unique ids.
<td id="pass"><label>Password</label></td>
<tr>
<td colspan="2"><input class="textBox" id="pass" type="text" maxlength="30" required/></td>
</tr>
see, both the td and the input share the id value pass.

Remove the id="pass" off the td element. Right now the js will get the td element instead of the input hence the value is undefined.

Javascript document.getElementById("<%=contrilid.ClientID%>").value; or using jquery
$("#<%= txt_iplength.ClientID %>").val();

This is the sample code for the email and javascript.
params = getParams();
subject = "ULM Query of: ";
subject += unescape(params["FormsEditField3"]);
content = "Email: ";
content += unescape(params["FormsMultiLine2"]);
content += " Query: ";
content += unescape(params["FormsMultiLine4"]);
var email = "ni#gmail.com";
document.write('SUBMIT QUERY');