Develop Reference

add dynamically generated fields from form

Hi guys i want to dynamically add a group of input fields when a button is pressed. This works with 1 group, but not with more than one. Here is my HTML:
<form action="address.php" method="POST">
<div id="list">
<input type="text" name="address" placeholder="Address">
<input type="text" name="suburb" placeholder="Suburb">
<input type="text" name="state" placeholder="State">
<input type="text" name="country" placeholder="Country">
<button id="addMore">Add Address</button>
</div>
</form>
I'm calling the addMore function with this javascript:
$(function(){
$("#addMore").click(function(e){
e.preventDefault();
$("#list").append("<input type="text" name="address" placeholder="Address"><input type="text" name="suburb" placeholder="Suburb"><input type="text" name="state" placeholder="State"><input type="text" name="country" placeholder="Country"><button id="addMore2">Add Address</button></div>");
});
});
I've added a button at the end with an id of addMore2 because i wanna generate a similar set of input controls but with different names. I want to call that id with this function:
$(function(){
$("#addMore2").click(function(e){
e.preventDefault();
$("#list").append("<input type="text" name="address2" placeholder="Address"><input type="text" name="suburb2" placeholder="Suburb"><input type="text" name="state2" placeholder="State"><input type="text" name="country2" placeholder="Country"><button id="addMore3">Add Address</button></div>");
});
});
... and then another set of controls with the function addMore3. Same as above, but with the number 3.
If i use each function alone, it works. But if i try to use all 3 together, it doesn't work. How can i dynamically reproduce a set of input controls with different names?

you could do something like this
$(var count = 0;
$("#addMore2").click(function(e){
e.preventDefault();
$("#list").append("<input type='text' name='address2'"+count+" placeholder="Address"><input type="text" name='suburb2'"+count+" placeholder="Suburb"><input type="text" name='state2'"+count+" placeholder="State"><input type="text" name='country2'"+count+" placeholder="Country"><button id='addMore3'"+count+">Add Address</button></div>");
count++;
});
});

#rayzor
You need to append your code before button
Please use below code:
jQuery("#addMore").click(function(e){
jQuery('<br><input type="text" name="address" placeholder="Address"><input type="text" name="suburb" placeholder="Suburb"><input type="text" name="state" placeholder="State"><input type="text" name="country" placeholder="Country">').insertAfter("input:last");
return false;
});
And remove code for $("#addMore2").click event

There's no need to add Addmore 2,3,etc manually. the js will add it automatically, as much as your want. Feel free to see this one: https://phppot.com/jquery/jquery-ajax-inline-crud-with-php/

How can I handle duplicate inputs name?

I have a dynamic form which probably has duplicate input names.
$(".add_more_staff").on("click", function(){
var $newMember = $(this).siblings('.company_members').clone();
$newMember.insertBefore($(this));
})
a, input{
display: block;
margin-bottom: 5px;
}
input{
cursor: pointer;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form action="#" method="post">
<div class="company_members">
<input class="staff_name" type="text" name="name" required placeholder="name" />
<input class="staff_mobile" type="text" name="mobile" required placeholder="mobile" />
<hr />
</div>
<input type="button" class="add_more_staff" value="Add more staff" />
<input type="submit" value="register_company_staffs" />
</form>
In the code above, you will have two inputs named mobile (or name) if you click on Add more staff button once.
Now I want to know, how should I get it in the PHP codes? According to some tests, $_POST['mobile'] contains the last input value. So how can I get all inputs value in PHP?
Should I make different names for new inputs in jQuery like name="mobile-n" (n = 1, 2 ..)
Should I use array-name for inputs like name="mobile[]" ?
Or what?

Try like this:
<div class="company_members">
<input class="staff_name" type="text" name="name[]" required placeholder="name" />
<input class="staff_mobile" type="text" name="mobile[]" required placeholder="mobile" />
</div>
in PHP:
$staff_names = $_POST['name'];
$staff_mobiles = $_POST['mobile'];

try this with jquery, during appending the html, you can add dynamic increment variable to like
staff_name_1, staff_name_2, staff_mobile_1, staff_mobile_2
with this, you can easily save or define the unique names, like I am showing you on simple example:
var a=0;
$(".add_more_staff").on("click", function(){
$(".company_members").each(function(){
a++;
$(".staff_name").attr('name', $(".staff_name").attr('name')+a);
});
});
Hope you can my idea.

Please try below it will contains data in groups, so you can easily loop it after post data and your JQuery code seems fine.
<div class="company_members">
<input class="staff_name" type="text" name="data[0][name]" required placeholder="name" />
<input class="staff_mobile" type="text" name="data[0][mobile]" required placeholder="mobile" />
</div>
<div class="company_members">
<input class="staff_name" type="text" name="data[1][name]" required placeholder="name" />
<input class="staff_mobile" type="text" name="data[1][mobile]" required placeholder="mobile" />
</div>

Validity and error messages from jquery validator [duplicate]

Using the jQuery Validation plug-in for the following form:
<form id="information" method="post" action="#">
<fieldset>
<legend>Please enter your contact details</legend>
<span id="invalid-name"></span>
<div id="id">
<label for="name">Name: (*)</label>
<input type="text" id="name" class="details" name="name" maxlength="50" />
</div>
<span id="invalid-email"></span>
<div id="id">
<label for="email">Email: (*)</label>
<input type="text" id="email" class="details" name="email" maxlength="50" />
</div>
</fieldset>
<fieldset>
<legend>Write your question here (*)</legend>
<span id="invalid-text"></span>
<textarea id="text" name="text" rows="8" cols="8"></textarea>
<div id="submission">
<input type="submit" id="submit" value="Send" name="send"/>
</div>
<p class="required">(*) Required</p>
</fieldset>
</form>
How can I place the errors inside the span tags? (#invalid-name, #invalid-email, #invalid-text)
I read the documentation about error placement but I did not get how it works.
Is it possible to handle each single error and place it in the specified element?
Thank you

You can also manually add error labels in places you need them. In my particular case I had a more complex form with checkbox lists etc. where an insert or insert after would break the layout. Rather than doing this you can take advantage of the fact that the validation script will evaluate if an existing label tag exists for the specified field and use it.
Consider:
<div id="id">
<label for="name">Name: (*)</label>
<input type="text" id="name" class="details" name="name" maxlength="50" />
</div>
Now add the following line:
<label for="name" class="error" generated="true"></label>
which is standard error label:
<div id="id">
<label for="name">Name: (*)</label>
<input type="text" id="name" class="details" name="name" maxlength="50" />
</div>
<div id="id-error">
<label for="name" class="error" generated="true"></label>
<div>
jQuery will use this label rather than generating a new one. Sorry I could not find any official documentation on this but found other posts that came across this behaviour.

This is a basic structure, you can use whatever selector you would like in the method. You have the error element and the element that was invalid.
jQuery.validator.setDefaults({
errorPlacement: function(error, element) {
error.appendTo(element.prev());
}
});
Or to target the ID, you could do
jQuery.validator.setDefaults({
errorPlacement: function(error, element) {
error.appendTo('#invalid-' + element.attr('id'));
}
});
Not tested, but should work.

I found that using .insertAfter rather than .appendTo works:
jQuery.validator.setDefaults({
errorPlacement: function(error, element) {
error.insertAfter('#invalid-' + element.attr('id'));
}
});

I'm using the metadata extension with the validator.. (note, I'm setting it to use the data-meta attribute on the markup...)
<input ... data=meta='{
errorLabel: "#someotherid"
,validate: {
name:true
}
}' >
then in code...
jQuery.validator.setDefaults({
errorPlacement: function(error, element) {
error.appendTo($(
$(element).metadata().errorLabel
));
}
});
I've been using the metadata for a lot of similar functionality, which works rather nicely... note, I used the single ticks (apostrophes) around the meta data, this way you can use a JSON serializer server-side to inject into that portion of the tag (which should use double-quotes around strings)... a literal apos may be an issue though, (replace "'" with "\x27" in the string).

i want to Add an onBlur and on focus to form elements

So on a specific page I have some number of form elements for example, user name and user email.
How can I add a specific onblur event and onfocus to all of the form elements dynamically on the page by using Java script?
`
<label for="name">Name:</label>
<input type="text" name="name" id="name" tabindex="10" />
<p>
<label for="email">Email:</label>
<input type="text" value="your email" name="email" id="email" tabindex="20" />
</p>

You can use jquery to get particular DOM element by name or Id and apply .blur(...):
$('#name').blur(function() {
...
});
If you want to use "pure" javascript:
document.getElementById('name').onBlur = function () {
...
};

Jquery .show Issue on IE

I have a form, and when certain inputs are filled another div will display beneath the form. The following is the code:
<form>
<div class="fieldtitle">Full Name:* </div><input type="text" value="" name="fullname" id="fullname" />
<div class="fieldtitle">Email:* </div><input type="text" value="" name="email" id="emailfield" />
<div class="fieldtitle">Contact No:* </div><input type="text" value="" name="contact" id="contact" />
</form>
<div id="demo1" style="width:300px; display:none;"></div>
<script type="text/javascript">
$("#formarea").keyup(function(){
if($(fullname).val() && $(emailfield).val() && $(contact).val() && $(quantity).val()) {
$("#demo1").show();
if($.browser.msie){
$('#demo1').css({"visibility":"visible"});
}
} else {
$("#demo1").hide();
}
});
</script>
It is working on all browsers, except for IE - any suggestions as how to solve this?

The html is missing the quantity field, which will cause logic issues in the Javascript.
<form>
<div class="fieldtitle">Full Name:* </div><input type="text" value="" name="fullname" id="fullname" />
<div class="fieldtitle">Email:* </div><input type="text" value="" name="email" id="emailfield" />
<div class="fieldtitle">Contact No:* </div><input type="text" value="" name="contact" id="contact" />
<div class="fieldtitle">Quantity:* </div><input type="text" value="" name="quantity" id="quantity" />
</form>
<div id="demo1" style="width:300px; display:none;">Test</div>
The Javascript binds the event to the wrong element. It should bind toinputs instead of the form. Also the selectors passed in for each input should be string literals using the css id selector.
$("input").keyup(function(){
if($("#fullname").val() && $("#emailfield").val() && $("#contact").val() && $("#quantity").val()) {
$("#demo1").show();
} else {
$("#demo1").hide();
}
});
There is also no need for the IE conditional. Jquery's show()/hide() methods are cross browser compatible.
Example: http://jsfiddle.net/DEfVS/1/

IE dont like suggested id or name selector, you dont use it in the right way. Specify which selector you are targetting.
e.g:
Replace
$(fullname)
With
$('#fullname')
And so on...
By the way, cannot see in your sample code any form with ID 'formarea'.
And remove this: if($.browser.msie){...} its useless.