I'm trying to create a form whose onsubmit returns false if the form
should not be submitted. Normally this type of thing works great for
me:
<form onsubmit="return somefunction()">
where somefunction returns false. But I'm trying to do some thing where
in some
script block, the function gets added:
form.attachEvent("onsubmit", function () { return somefunction()
});
(not worrying about crossplatformosity, sorry). But that doesn't work,
the form is always submitted. Is there something else I need to be
doing to make this happen?
I have email, password and some other fields, and I'm using $.post to send data for Ajax submission.
The problem is that I don't want to submit a particular field. The serializeArray() returns all the fields in the form. So, I tried something like this to prevent the password field being serialized.
This works great but the ajax submission doen't work.
I'm trying to prevent the submission of a form but it apparently isn't working. Code: elForm.onsubmit = function(){ object.GoAJAXGo(elForm); return false; } The return false bit I believed would prevent the submission.
I have a form in which I have this link :- < href="javascript:submitform(parameters );"> . In the JavaScript function submitform, there is the code for submitting the form.Thi works fine with single click on both IE,NN6.In IE the form is submitte only once even for double click.But if you double click on the link i NN6, the form is submitted twice. This causes problem. The workaroun for this was that we set a flag(indicating form submission) in th submitform function, we also set a timer which calls the functio resetflag after 3 seconds.So any click within 3 seconds of the firs click will be ignored (so that the form is not submitted for the secon click).
I am building an online store and need to restrict checkout unless a customer has bought at least $20 of items. If they have >$20, they can check out. If they have <$20, they should get an error when they click the checkout button that will explain that there is a $20 minimum. I don't want them to be able to checkout, so maybe I also need to disable the button or hide it?
Here are the two elements in my HTML:
The total price div: Code: <div id="totalprice">{tag_productgrandtotal}</div>
The checkout button: Code: {tag_buybutton,<img alt="" src="/CatalystImages/shop_checkout.png" />}
Here is what I've tried to put together with my next-to-nothing knowledge of Javascript: Code: <body onload="checkOut()"> <script type="text/javascript"> function checkOut() { [code]...
In my Web Form I have more than one Textbox for user input. If I hit enter to any Textbox its submitting the form. How can I prevent Form submission if users hit enter to the textbox? I want to submit the form only when user will hit submit button.
I have email, password and some other fields, and I'm using $.post to send data.
In Ajax form submission, I don't want to submit a particular field. The serializeArray() method returns all the fields in the form. So, I tried something like this to prevent the password field being serialized.
This works great but the ajax submission doen't work.
I have a set of text boxes sharing the same name that I want to validate onSubmit. If a duplicate is found, I want to alert the user and prevent the form from submitting. How would I check the text boxes for duplicates?
<script type="text/javascript"> function Validate() { var obj = document.getElementsByName('keyword'); var i = 0;
I have a simple PHP form and to prevent double data submission, once the user has clicked 'submit', I want to disable the submit button using JavaScript. It was recommended in another thread that one could accomplish this using jQuery and the following code:
I have an HTML table with <tr> sections that is generated by php which looks like the following HTML Code: <tr align='center' class='row_a'> <td align='center'><input id = 'assign0' type='checkbox' name='agent_8949' value='0' /></td></tr> <tr align='center' class='row_b'> <td align='center'><input id = 'assign1' type='checkbox' name='agent_8950' value='1' /></td></tr> <tr align='center' class='row_a'> <td align='center'><input id = 'assign2' type='checkbox' name='agent_8951' value='2' /></td></tr> <tr align='center' class='row_b'> <td align='center'><input id = 'assign3' type='checkbox' name='agent_8952' value='3' /></td></tr>
The id's and values are generated by php, my problem is, I want to use javascript to check if anyone of the check boxes has been checked on submission meaning that I have to go through the <tr> list. Here is my JS code which only works for one id. Code: //I know the length of the checkbox (checkBoxID) fields which is the number of rows in the database table function validate(checkBoxID){ var ids_Prefix = 'assign';//we know all the ids starts with this string for (var i = 0; i < checkBoxID; ++i) { if(document.getElementById(id_Prefix+i).checked == false){//how do I check the next one? alert("You did not make any selection"); return false; }}}
I am trying to create a form that writes text to an HTML canvas when submitted. Eventually, the function that writes the text will be more complex. The problem is the text only appears briefly, because the function is only called once when the form is submitted. I want the function to be called continuously after the form is submitted.How do I do this? I have had very little experience with JS.A lame (failed) attempt...
I have two frames. Frame "search" contains a search form specifying an onsubmit action like so:
<form ... ... </form>
The other frame contains a <img ... where the perform_search function is defined as follows:
<script language="JavaScript"> function perform_search() { var frame = parent.frames.search; var form = frame.document.forms.mainForm; form.submit(); } </script>
Now, when hitting Return in the search form, then foo() is called fine. But when clicking on the <img ... in the other frame, foo() is NOT called.
Is expclicitly calling foo() from perform_search() the only way to do it, or is there a magic incantation that might do what I want?
I'm having troubles with an existing J2EE application (which uses Dojo) and in which I'm gradually introducing jQuery. The specific issue is with the malsup Form plugin and the JSON returned from a form submission: the error callback is always called, regardless of what happens on the server side, and the error is always "parsererror". I'm using jQuery 1.4.2 and the 2.45 version of the malsup Form plugin. For example, given the following code:
$(document).ready(function() { var options = { dataType: 'json',[code]....
the server receives the submission and handles it without errors, then in the browser I always get the same alert from the processAddressEditSubmitError() function, with an "Invalid JSON" message:
II'm running Joomla 1.5.23 and I've been trying to get validation on a component's form fields. In the header section, I'm properly loading the validator.js file, which contains the following:
//function to check empty fields function isEmpty(strfield1, strfield2) { strfield1 = document.forms[0].firstname.value strfield2 = document.forms[0].lastname.value[code]....
My problem is that even if all fields are empty it will go to the next step.
I have been searching high and low and I can't seem to find an answer. I am new at JS and I have created an form and when I click the on submit button it resets all the fields. The fields are always blank after I click reset. I have been working on this for 6 hours.
It just keeps resetting when I click Submit. I see for a millisecond that the total appears but then disappears along with the amount I put in the input text box.
I have created a simple form for uploading text files.You can see two versions of this it at: http:[url]....The form created with static HTML, works fine in current versions of the major browsers.However the dynamic form, fails (only) in IE.It fails because IE does not send the file at all when the form is submitted.
1.The user presses 'Submit Answers' button,which ends the exam and his result is displayed.This one is working fine.
2.The other is the timer expires.the exam finishes and the user's result should be displayed.This one is giving me a problem.
When the timer expires I want to run the onsubmit() function to assign values to hidden form inputs ,but I am unable to do so.How do I do this.Everything else with the timer function is working fine. Only a snippet of the actual code is given here,because the rest of it is ,I believe,irrelevant to the discussion.
I just noticed that if I use a "submit" button the "onSubmit" function call will be invoked. But if I use a button to call some other javascript and at the end of that javascrip I do something like "form.submit()" the "onSubmit" function call will NOT be invoked. I thought that was wierd. Can anyone shed some light? Here's a small example:
<script type="text/javascript"> function subform() { document.frm1.submit(); } function checkform() { alert('checking form'); return true; } </script> </head>
BUT $script_start_time must be populated at the exact moment the submit button is pressed, and not when the page where the form is first visited. Which is why I need a client side solution.
I am using Form in a PHP Code - which post the results to another external - application, and i would like to save some recordes in DB (when someone use the submit button) before moving on to the external-app. how could i do this in a javascript or is it possible?
I am in a JavaScript college class and right now we are learning about form validation, well before server side validation, and I am having an issue with validating the field if the user updates it and hits submit again. The red .setAttribute function is not removed. My code is below, please excuse the noobness I am displaying here.
I have created web pages that do client-side form validation using the onclick directive. E.g.,
<form action=other_page.cgi method=post> Enter your age: <input name=age> <input type="submit" value="" validate_form()"> </form>
where validate_form() returns true or false depending on whether the user entered a valid age.
This does what I want almost everywhere (e.g., Firefox on FreeBSD, Safari on Mac, IE on Win2000) but recently I have become aware of an exception: IE on WinXP.
On WinXP's IE, validate_form() is called (and will display an alert box if that's that's what I coded), but whether it returns true or false, the form is submitted. (Then we do the server-side validation and throw up an error page, but I'd rather catch this client-side.)
So the question I have is: why is WinXP so weird about this? Previous versions of IE didn't do this.
While looking into this, I've discovered I can also do an onsubmit check in the form tag, e.g.,
Is onsubmit new or has it been around for a while? Can I trust old Mozillas on Linux to do the right thing with it? Windows is actually a small portion of the target audience, but I like to make things work for everyone.
Does it make a difference if the form is submitted to the same page or a different page? I don't have ready access to Windows XP to test this out.
I have the following form working with on onsumbit function, but I would like to change it so that instead of having to click the purchase button to see total price, you only have to change the quantity text box input. I just can not seem to get it to work.
<script language="javascript" type="text/javascript"> function checkQuantity(frm) { var succesful = false; var numQuantity; numQuantity = parseInt(frm.Quantity.value); var numTotalPrice;
if (numQuantity != 0) { numTotalPrice = numQuantity * 4; frm.TotalPrice.value = numTotalPrice; //new String(numTotalPrice); successful = true; } else { alert("Sorry must order more than 0"); successful = false; } return succesful; } </script>
