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Possible Duplicate:
submit a form in a new tab
How can i open a new window when i submit one form?
<form method="post" action="<?php echo $PHP_SELF;?>">
First Name:<input type="text" size="12" maxlength="12" name="Fname">:<br />
Last Name:<input type="text" size="12" maxlength="36" name="Lname">:<br />
<input type="submit">
</form>
497
The disabled property was first introduced by Microsoft but has since been adopted as a standard by the W3C. So when the form is submitted - either by clicking on the submit button or pressing Enter in a text input field - the submit button will be disabled to prevent double-clicking.
Use the preventDefault() method on the event object to prevent a page refresh on form submit in React, e.g. event. preventDefault() . The preventDefault method prevents the browser from issuing the default action which in the case of a form submission is to refresh the page.
The <form> target Attribute in HTML is used to specify whether the submitted result will open in the current window, a new tab, or on a new frame ie., this attribute specifies a name or a keyword that shows where to display the reply, once the form is submitted.
You can check if the user clicked the back button, disable form if true. Another way is by storing a cookie which you check on page load, if it exists you can disable the form.
you can use code like this
<form action="#" method="post" target="_blank">
...
</form>
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