I have two button on page first submit and other save but one there is one condition if admin log in Save button shows and if client log in submit button show. But bug is any one who log in can easily change disable to enable or enable to disable from view source and click the button
#{
if((Utility.GetUserRoleFromSession().ToString().ToLower().Equals(UserRole.Client.ToString().ToLower())
{
<input type="button" value="Submit" title="submit" class="blueBtn" id="btnSubmit" />
}
if (Utility.GetUserRoleFromSession().ToLower().Equals(UserRole.Admin.ToString().ToLower())
{
<input type="button" value="Submit" id="btnSubmitEE" class="btnSubmitEE blueBtn" />
}
}
Make the button visible = false according to user. If button is invisible, then it will not appear in the viewsource.
Make the button invisible to ensure that the button is not emitted to the rendered HTML.
As a second line of defense, put logic into the code-behind to verify that the user should be able to click the button before actually performing the logic on the server-side. This is analogous to performing both client-side validation and server-side validation, because the user can turn off JavaScript on the client-side, at that point server-side validation is all that is executed.
Note: Bottom line is the server-side should NEVER trust anything the client provides to it.
Related
I have a single page React app with a simple login form with two buttons LOGIN and BACK. If I click BACK LastPass still offers to save the entered username/password, even though I didn't login.
Is there any way to tell LastPass that the back button is a cancel button for the login form and that it shouldn't try to save the username/password in that case?
HTML looks something like this:
<input name="username" type="text" />
<button type="submit">LOGIN</button>
<button>BACK</button>
You can use <input type="reset" /> or <button type="reset">.
As its name says, a reset button is ment to cancel a form. When it is activated, all user inputs are cancelled and the fields are reset back to their default values, i.e. the ones that were specified in the HTML code.
In JavaScript, You may intercept an activation of the reset button by using the reset event on the parent form, i.e. form.onreset=..., form.addEvementListener('reset', ...) or <form onreset="...">.
Note that, as for submit buttons, it's a bad practice to intercept the click event directly on the button by using onclick: although there is no universal standard way to cancel the form as there is with the enter key to submit it (escape key don't cancel the form by default), you can't be sure that there is no other way to cancel the form than click on the reset button.
For a Project, in which we are not yet allowed to use php, I want to create a login page. I just can't figure out how to make it so the cancel button and the submit button take me to predefined pages. I want to be able to input some dummy data into the username password fields and when I press submit be sent to the "logged in" part of my site.
<button type="submit" value="profil.html">Login</button>
I tried it like that but it doesn't work. I also tried that:
<form action="profil.html" method="get">
You can use little bit of js to achieve it cleanly.
<button value="Cancel" onclick="window.location.href='otherpage.html'"> Cancel</button>
Set the action in the form. Use a submit button to submit the data to that URL.
"Cancel" means "Give up on the form and go somewhere else". To go somewhere else: Use a link.
<button>Login</button>
Cancel
Suppose I have the following HTML form:
<form>
...
<input type="submit" name="queue" value="Queue item">
<input type="submit" name="submit" value="Submit item">
</form>
How do I know which button the user clicked (without using javascript)?
I looked at submitted data and it seems that when "Queue Item" is clicked then "queue" = "Queue Item" gets sent to the server. And when "Submit item" is clicked then "submit" = "Submit item" sets sent.
Can I rely on this behavior? Is it documented somewhere in the standard on HTML forms? How do you guys do it?
Yes, you can rely on this; it's fully documented here. The specific relevant lines say:
When a form is submitted for processing, some controls have their name paired with their current value and these pairs are submitted with the form. Those controls for which name/value pairs are submitted are called successful controls.
and
If a form contains more than one submit button, only the activated submit button is successful.
Yep you can rely on that behaviour.
When <input type="submit" name="queue" value="Queue item"> is clicked, the field "queue" will be set and "submit" will not be.
Whereas when the other gets clicked, the field "submit" will be set, and "queue" will not be.
If you're not assured by this, you can split them into 2 forms and work on it that way.
You can rely on this behavior. You get the value of the input. I would use javascript to toggle a hidden form value, but since you mentioned no javascript you do not have multiple choices.
It's a standard. Since it's an input tag, and has a value, that means you get the value submitted.
Split the form into two forms, replicating any other inputs needed by the other action. Or, if you really just need to know if the user wants to "queue vs. submit" the item, change both submit buttons to radio selections to toggle between the two options, and have a new, separate "submit the form" button.
In that situation if you want a one-click option, you could use Javascript to detect when one of the radio buttons is selected, and auto-submit the form instantly. (Using Javascript for user interface, rather than form handling)
I had designed an HTML form with submit button. But instead of submit it to another page I want to submit to pop up windows where I can limit the size of the pop up windows say "320x240" hide all the toolbar, disable resize.
Here's my go at it; this JavaScript snippet should go into the head of your page:
<script>
process = function()
{
window.open('about:blank', 'popup', 'width=320,height=240,resizeable=no');
document.login.setAttribute('target', 'popup');
document.login.setAttribute('onsubmit', '');
document.login.submit();
};
</script>
And this is a sample form for demonstration purposes:
<form action="handle.html" method="get" name="login" onsubmit="process(); return false;">
Username: <input type="text" name="username" id="username" /><br />
<input type="submit" />
</form>
Now, here's what's happening: first, we set up a form and give it an onsubmit attribute that tells it to run the function process() and return false; instead of submitting normally; from this point, that function takes over and creates a popup window, giving it a name, and some features (by all means, add any surplus ones you'd like), and then attention comes back to the form, where we now set the target attribute to the name of the window we just created.
We then have to clear that onsubmit that we set earlier, or this same exact thing will happen again, and that's certainly not what you want. Finally, we just have the form submitted again and it now passes all of its information to the popped window; from there, it's just getting handle.html (or whatever you end up calling your processing page) to do its work with the data.
Hope I've helped.
What is the difference between HTML <input type='button' /> and <input type='submit' />?
<input type="button" /> buttons will not submit a form - they don't do anything by default. They're generally used in conjunction with JavaScript as part of an AJAX application.
<input type="submit"> buttons will submit the form they are in when the user clicks on them, unless you specify otherwise with JavaScript.
The first submit button of the form is also the one being clicked for implicit submission, f.e. by pressing enter in a text input.
A 'button' is just that, a button, to which you can add additional functionality using Javascript. A 'submit' input type has the default functionality of submitting the form it's placed in (though, of course, you can still add additional functionality using Javascript).
It should be also mentioned that a named input of type="submit" will be also submitted together with the other form's named fields while a named input type="button" won't.
With other words, in the example below, the named input name=button1 WON'T get submitted while the named input name=submit1 WILL get submitted.
Sample HTML form (index.html):
<form action="checkout.php" method="POST">
<!-- this won't get submitted despite being named -->
<input type="button" name="button1" value="a button">
<!-- this one does; so the input's TYPE is important! -->
<input type="submit" name="submit1" value="a submit button">
</form>
The PHP script (checkout.php) that process the above form's action:
<?php var_dump($_POST); ?>
Test the above on your local machine by creating the two files in a folder named /tmp/test/ then running the built-in PHP web server from shell:
php -S localhost:3000 -t /tmp/test/
Open your browser at http://localhost:3000 and see for yourself.
One would wonder why would we need to submit a named button? It depends on the back-end script. For instance the WooCommerce WordPress plugin won't process a Checkout page posted unless the Place Order named button is submitted too. If you alter its type from submit to button then this button won't get submitted and thus the Checkout form would never get processed.
This is probably a small detail but you know, the devil is in the details.
IE 8 actually uses the first button it encounters submit or button. Instead of easily indicating which is desired by making it a input type=submit the order on the page is actually significant.