Prevent refreshing the page after button clicked in vb.net - javascript

I have a page with a javascript that dynamically create a controls (radio buttons, text boxes) .
on button (submit) I need to validate the values before proceeding with the event it self .
but , after hitting the button I need to cancel the event if one rule didn't obey. but the page gets refreshed and all my dynamic controls goes so I need to stop any action to a page if one of the rules failed . (save the form)
I believe there is a way such as e.preventDefault(); in javascript .
Please Advise,
Many Thanks :)

There are many ways to prevent page refresh But we are not certain what you are talking about, so I'll just Give the regular example That I can Find
Fist your e.preventDefault is not for refresh its just prevent link from opening the URL and i.e as per w3school
$("a").click(function(event){
event.preventDefault();
});
Now To prevent a page refresh there are too many example Please take a look at the Given link Please take a look

Related

How to prevent multidocument form page from reloading?

I'm working on a web app that takes the user through multiple forms with simple interface of a 'back' button, form, 'save' button and a 'next' button.
Clicking 'save' only calculates a number from given answers and sends it to localStorage.
When I then click 'next', it opens the next html file I prepared, constructed the same way, just with a different form. The problem is that if I press 'back', the form on the first page is empty, but when I use the browser's 'back' button, it's all there. How do I get this result with my 'back' and 'next' buttons? I'd like the user to be able to browse their answers as well as see a certain form already completed if they encounter it on a different path (there are various paths through 3 to 5 of 11 forms created, depending on what the user wants to calculate).
I understand it's opening the html file every time I click an 'a href', but I don't know how to change it. I tried searching for html form reloading prevention etc. but it doesn't seem to yield any answers. I'm not sure I know how to formulate my problem in a simple enough way.
Best simple solution would pretty much be what "Manolo" suggested.
Put all the forms you need in one HTML doc
Set all the form's style to "display: none" except the first
Create a simple JS function that changes the "display" style accordingly and attach it with the "onclick" attribute to your buttons.
Sorry for the lack of code. Typed this on mobile and hoped it would be straight forward enough. Hope this helped.
Load the forms as you need them using javascript to request them to your server. Use fetch api.
Other solution is to add all the forms to one page and hidde them all from the user. When the user click next you hide firstForm and show secondForm.
You can use History_API of DOM to manipulate the history
let stateObj = { foo: "bar" }
history.pushState(stateObj, "page 2", "bar.html")
And can catch thee event of back and next button of navigator with
WindowEventHandlers

Google Tag Manager Form - Thank You Page

I am trying to use google tag manager to have a tag that will fire every time the user submits the form and lands on the thank you page. In this scenario, I know an option is to use the Trigger: Page View, and then specify the thank you page URL in the conditional statement.
However, since this URL can be shared, I only want to track when the user submits the form and lands on the thank you page (not when the URL is accessed through other ways). What would be the best way to tackle this?
Why would people share the thank-you page? I can imagine sharing a form, but why would the url of the Thank you page get shared.
However, what you can do is track clicks on the button or link that submits the form.
I ll advise assuming you NEED to fire when the user gets to the ThankYou Page for X reason and CANT be done on the button submit click.
Add a custom HTML tag with a trigger on the click of the form submit button (you can use build in variables such as Click Classes) and add a 'flag' on the session storage or a cookie (choose the one you are more comfortable with).
Then generate a trigger that fires on the Thankyou page AND has the flag on.
Example:
Tag when user submit the form:
<script>
storage.setItem('flagSubmit', 1);
</script>
Custom JS variable that checks if user has flag:
function(){
return storage.getItem('flagSubmit');
}
If you need any more help just ask.
Hope it helps!
-- EDIT: add info
As you comment you cant detect if the flag is being saved properly so here is a code you can paste on the console that ll avoid you browser to exiting the page and allowing you to see if your click tag worked and registered on session storage you data.
window.addEventListener("beforeunload", function() { debugger; }, false)

Replace text on page on form submit

I have a form to let people submit news articles to my site (a company intranet). Sometimes the form submission takes a few seconds to resolve due to some actions I have in place on the relevant model save method. I wanted to replace the text on the form page with a message saying "Sending your article. This may take a few seconds, please do not refresh the page." as soon as someone hits submit. I've seen these on a number of websites when buying things online.
My first attempt at doing this was to add an onClick event to the form button. Submitting then successfully replaced the text but did not submit the form. I had a look at this answer on binding two events to one submit button but it doesn't seem to address my need as it looks PHP-specific. I'm certain javascript is the right tool for the job but I can't think of how to do this other that binding to clicking the submit button. Does anyone know the correct way to do this?
JavaScript is indeed the right way to do so. If you are using jQuery you can go ahead and use something like:
$('form#your-form-id').submit(function(){
$(this).hide().after('Loading, please wait...');
});
Where #your-form-id would be the id of the form. This function is hiding the form content and showing that text, you could do anything instead actually.

Selectively POST to new browser window

I've got a form that has three submit buttons for posting back data for different scenarios.
Each one POSTs to different actions on a controller, however for one of them I need to POST back to a new browser window.
Is this possible? I know I can add a target="_blank" to the form, but that will open a new window for all of the submit buttons...
UPDATE:
Currently, I've tried several methods to get this working and I've completely failed, my current non-working code looks like this:
$("input[type=submit]").click(function (e) {
var form = $("form.filter-execution-form");
if ($(this).hasClass("run-report"))
$("form.filter-execution-form").attr("target", "_blank");
else
$("form.filter-execution-form").removeAttr("target");
});
Does anyone have any ideas to get this working?
Thanks,
Kieron
See this post - use the same method to dynamically add the attribute for the submit button you want it for (ie add it to the onclick event of your submit button you want to add this support to)
How do I add target="_blank" to a link within a specified div?
There are probably a number of different ways to do this. The easiest I can imagine is when the submit button is pressed in the first window, you open a new window with a URL (on the same domain) that has the desired form in it (may have to watch out for pop-up blockers). Then, transfer the data that has been entered from your existing form to the form in the new window. Call a javascript function in the new page that tells it to submit the form.
In the form set target="postWindow" or any other name that is the same throughout, and it will always post to that popup (if it was not closed).
The best way I can think of doing this (and it might not be the best way of doing it) would be using JavaScript.
When you click the button, prevent it doing anything but run some javascript instead, open a new window on a blank page, with a hidden form in it, use javascript to transfer values from your form to the new pop-up form, submit the pop-up form & do something with original page to show an action was taken.

JavaScript auto-POST with NAME

I have an OnBase e-Form that I'm building. There are three buttons on the form that all submit. OnBase does different things based on the name of the button used to submit the form. If the button has a name of OBBtn_CrossReference it opens another window with a cross referenced document. I need to programmatically 'click' that button.
I've read several posts about how to use JavaScript to submit a form, but none seem to accomplish my goal. I just need to POST and to have it appear to come from a button named OBBtn_CrossReference.
I don't need to submit any data. The way the page is currently set up, the entire page is already a form and since I don't want to break the functionality of the other form buttons it seems I must leave it that way.
UPDATE:
The suggestion below was tested as a call from the onload event in the body tag and since the button posts the page reloads and the call is made over and over again spawning unlimited child windows. I would appreciate a suggestion on how to get the button to only be clicked the first time the page is loaded and not on postback.
There's a click() method on links, buttons, checkboxes. For example , I submitted this comment by running document.getElementById('submit-button').click() from chrome's command line.
I know I am a little late to this post, but you can try and leverage a cookie to get this done:
if (document.cookie.indexOf('xref=true', 0) < 0) {
// Set the xRef cookie, so we do not fire it again for this form.
document.cookie = 'xref=true';
//alert(document.cookie);
document.getElementById("OBBtn_CrossReference").click();
}
else {
document.cookie = "xref=false";
//alert(document.cookie);
}
I tested this on the Thick and Thin clients in 10.0 and it worked fine.
The postings on this site are my own and don't necessarily represent my company's positions, strategies or opinions.

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