I have a website that receives parameters in the URL address (www.xxx.html?name=David)
then I assign the value to the html text like this:
<span name="uname" id="uname"> </span>, I'd like to thank you
<script src="//code.jquery.com/jquery-1.12.0.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
var userName = getParameterByName('uname');
document.getElementById("uname").textContent = userName;
});
</script>
up to this point everything works well
now when I try to read again the value in uname in the PHP file in order to send it in the email I have two issues
the parameter is not received - emailText = $_POST['uname'];
when trying to debug I see the HTML file and js file being loaded and can be debugged but the PHP file doesn't exist in the file tree of the debug
BUT it is being loaded and read because other variables are being read and sent correctly to the email.
When submitting a form the user agent (browser) will build a form data set from
"Succesful controls".
A Control is one of the following:
buttons
checkboxes
radio buttons
menus
text input
file select
hidden controls
object controls
Only these fields will be submitted when you submit a form. A <span> is not part of that.
If you want to add a value with JavaScript to the form that is not inside of a text input, I suggest that you use a hidden input to do so.
<input name="uname" type="hidden" value="value">
When you edit the span, you should then also change this hidden field to the same value.
You cannot use span with name attribute.
Read this
https://www.w3schools.com/tags/tag_span.asp
If you want to post, use form + proper input element.
https://www.w3schools.com/html/html_form_input_types.asp
And still, it's not very clear you are really trying to do, show us the whole page ...
If I need to get value of span ill do something like this
<span data-name="someTextHere">...</span> # data-name will not visible in browser unless page source mode
and you can access it by using ($(this).data('name'))
Ex
var userName = ($(this).data('name'));
And this article Submit Form Using Ajax, PHP and jQuery will helps
you to pass data without Undefined Index Error.
Related
I'm using a form that has 3 parts, login, forgot password and registration. The initial view is the login form, but can be changed to the forgot password or registration form, which replaces the initial view by using JS.
I'm looking to post back to the page if validation isn't met. This seems to be working fine, and the field repopulates itself. However I can't get the right form to load when posted back.
For example, if the user is filling out the forgot password form, and fills in an invalid email address, the message at the top of the form will be correct, however the form that will appear is the default login form. Once the user clicks on the forgot password button, JS kicks it over to the forgot password form, and has the users invalid email address re-populated. Each form has a unique "form_type" hidden variable to differentiate between the three, so I can use this to check then load the right one. Ideally I would like to keep this as 1 page and use JS to swap between the three if possible.
I don't know how to get it to load the right form once posted back. It's using the below code to change between the forms. How do I link to the right form when posting back.
<a href="javascript:;" id="forget-password">
<a href="javascript:;" id="register-btn">
I'm not good with JS at all, and I think this is the issue. The front end and JS is all created by a third party, it's "Metronic" theme. Let me know if I need to include any JS. If it makes a difference, although the logic should be the same, I'm using codeigniter too.
EDIT All the functionality to swap between the forms is there, I just need it to POST back to the right form. This is what I have so far, if you click on the forgot password and enter an email address that is longer than 5 characters, you'll see what I mean. I obviously didn't ask this very well...
Once the user submits, and the form is posted back with errors, I need right form to pop up, rather than the default for the page. The tags above are the links used to swap between the different forms.
May be you can try on posting back to view also bring one extra variable say 'show_form'
in that show_form have you form id and based on that do jquery hide/show method
like $('#' + show_form).show() and other 2 hide.
you can try this.
I'm not sure I understand exactly what you're asking.
Do you need to have 3 forms in the same page and swap between them with JS?
If so, give each of the forms a unique ID and have 2 forms with display: none. then all you have to do (assuming you do not want to use jQuery) is just to change the style.
HTML:
<form id="first_form" class="form-visible">
...
</form>
<form id="second_form" class="form-gone">
...
</form>
<form id="third_form" class="form-gone">
...
</form>
CSS:
.form-visible
{
display: inline;
}
.form-visible
{
display: none;
}
JS:
function swapForms(id)
{
Swap-between-forms
}
differentiate the form with some variable . for example after submission form you can post back errors in variable name like if the submitted form is forgot password means define the variable name is $forgot like that. in view file check if(isset($forgot)) then set it's style as display block .
I am using Flask as the backend. And I wrote a simple form with WTForm, say,
field = StringField('input:', validators=[Required()])
And I write a JQuery to fill it automatically
$('#theidofthefield').val('fillingin');
And I click the submit button in the form but it shows that the field is empty. And I check the request.form.field.data is also empty.
Hope to get a solution.
I have no idea about WTForm but you can check if your field element has got the name attribute, which is required to send back to the backend code.
Your field has to be something like this:
<input type="text" name="thenameofthefield" id="theidofthefield" />
//-----------------^^^^^^^^^^^^^^^^^^^^^^^---name attribute is required.
Another way to fill value is:
$('#theidofthefield').attr('value','filling');
Lets see if it works..
In case variable field is pointer to the object then..
$(field).val('dfsdf') or $(field).attr('value','filling') may work.
I have many questions based on form. I don't know the title suits or not. I created a JSP page and contains a form. It has many fields like input, select, textarea.
First is I want to count the number of fields in the form using JQuery. I tried the following.
var ln=$("#fileUpload").find('input,select,textarea').length;
alert(ln);
The form has one select box, 3 input fields and a textarea. But it was giving 0, instead of 5.(#fileUpload is the form id I want to submit)
How to get the exact number of fields?
Next is, I want to get each element in the form and find some attribute value. For examaple I want to get the name or id attribute for each element.
I would recommend using each() function:
$("#fileUpload input,select,textarea").each(function(){
console.log(this);
}
Btw: don't use alert, use console.log() instead ;)
You need to make sure that the form is loaded before your js script is launched.
To do so, wrap it in document ready like so:
$(function () {
var ln = $('#fileUpload').find('input, select, textarea').length;
alert(ln);
});
There should no problem in your code
Check that you have added the jquery and add an attribute to your form
id="fileUpload" then check
Also, check you don't have any other element having id fileUpload
like input type="file"
In your page <form id='fileUpload' ... > must be unique
Fiddle http://jsfiddle.net/qUJZf/
I'm relatively new to programming, but understand the basics of HTML, CSS, and Javascript (including jQuery). Due to my greenness, I'd appreciate it if answers contained both a simple solution and a reason as to why the solution works. Thanks!
So I've got a form, with a text input and a submit button:
<form>
<input type="text">
<button type="submit">Submit</button>
</form>
When the user types data into the text field and clicks submit, how do I gain access to this data? If a user inputs their name, how do I grab that information? I don't intend to store it or write it anywhere, just to hold onto it as a variable in javascript, which I'll assign to a jQuery cookie.
So how do I access the data that the user has submitted, preferably using only Javascript (with jQuery)? Thanks for the help!
You access the data on the server side (in PHP via $_POST['username'] for example). The form sends data to your sever for any named input, so you would probably have to change the input to:
<input type=text name=username>
If you want to access it on the client side (with JavaScript), you can do that too, but you have to prevent the form from submitting:
$("form").on('submit', function (e) {
$.cookie('username', $(this).find('[name=username]').val());
//stop form from submitting
e.preventDefault();
});
say you had an html input tag such as:
<input id="textfield" type="text">
using javascript, you can store the value of that field in a variable like this:
var inputvalue = $('#textfield').val();
of course, you'll need something to run the script.
the reason this works is that the the textfield is an object. you might think of it as a tree trunk with different branches coming out. one of these "branches" is the value contained inside of it. since you know jquery, you know that $('#textfield') gets the element by a selector. the period says we're getting one of the branches, and "value" says we want the branch that tells what's in the textfield.
hope this helps.
I am wondering if it is possible to somehow get the value of a div and attach it to the form post on submit?
Using JavaScript, you can get the DIV contents and insert them into a hidden form field.
An example - a page snippet (jQuery used for simplicity, plain JS would work too):
<form id="yourform" action="/some/uri">
<input type="hidden" name="your_div_content" id="hidden_element" />
<input type="submit" />
</form>
<div id="yourdiv">
This text will be copied into the form using JS
</div>
<script>
$('#yourform').submit(function(){ /* On #yourform submit ... */
$('#hidden_element').val( /* ... set #hidden_element's value ... */
$('#yourdiv').html() /* ... to whatever is in #yourdiv . */
);
});
</script>
Of course, this will only work when JS is enabled in the browser.
You may want to use a hidden field <input type="hidden"> in your form, and then set the value of your hidden field on form submit with the innerHTML of your div.
You could use ajax. That way you could send whatever data you wanted however you wanted.
For instance (this is using mootools):
var req = new Request({url: 'somepage.php', data: 'queryStringDate'});
req.send();
There you go :)
This of cause can be done without any framework, I just don't remember the code in my head :-P
It depends what you mean by the "value of a div".
For example, you can retrieve all HTML inside the div by using document.getElementById(your_div_id_here).innerHTML
Alternatively, you can access values of the div attributes by using e.g. document.getElementById(your_div_id_here).title to access the div's title attribute.
If you intercept the submit event of your form (maybe by intercepting the click event on the form’s submit button), then you certainly can GET or POST with anything including content of an element. With vanilla HTML, however, I’m afraid it’s not possible.
Tucking values into hidden fields might also work, depends on preference. ;)
You could have a hidden input and populate it with the contents of the div before doing your submit, then it would be included.