Submit form on page load
Question
I want this login form to submit automatically when the page loads. I am using IP address for registration so do not want a login button.
<form action="<?=$_SERVER['PHP_SELF']?>" method="post">
<input type="hidden" name="ip_address" /><br />
<input type="submit" name="submit" value="Login" />
</form>
3 answers
solution1
0 2018-03-13 14:26:06
You can do something like:
<form id="my_form" action="<?= $_SERVER['PHP_SELF'] ?>" method="post">
<input id="ip_address" type="hidden" name="ip_address" /><br />
<input type="submit" name="submit" value="Login" />
</form>
<script>
$(document).ready(function(){
if($("#ip_address").val() != "")
{
$("#my_form").submit();
}
});
</script>
Note: you must add JQuery library in your web page.
solution2
0 2018-03-13 14:27:44
Using JavaScript:
<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="POST" id="my-form">
<input type="hidden" name="ip_address" /><br />
<input type="submit" name="submit" value="Login" />
</form>
<script>
//Once the page is loaded, submit the form
document.addEventListener("DOMContentLoaded", function(event) {
//The id of your form.
var idOfYourForm = "my-form";
document.getElementById(idOfYourForm).submit();
});
</script>
You just need to set the id attribute to your form and set the variable idOfYourForm , so the JavaScript will be able to submit your form. This method use pure JavaScript, no jQuery or other library.
See DOMContentLoaded event.
solution3
0 2018-03-13 14:34:43
In case you don't use jQuery:
<body onload="javascript:submitonload();">
<form id="my_form" action="<?=$_SERVER['PHP_SELF'];?>" method="post">
<input type="hidden" name="ip_address" value="<?=(isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : '');?>" />
<br />
<input type="submit" name="submit" value="Login" />
</form>
<script type="text/javascript">
function submitonload() {
document.getElementById('my_form').submit();
}
</script>
</body>
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