How To Prevent From Page Refresh On Submit Button Click

i have form with one input and one submit button.

Copy

for jquery you can use

e.preventDefault(); // e is passed to handler

Your complete code will be something like

using $.post() in js

function checkfunction(obj){
$.post("your_url.php",$(obj).serialize(),function(data){
 alert("success");
 });
 return false;
 }

html

<input type='submit' onclick="return checkfunction(this)" />

or same effect with onsubmit

<form  onsubmit="return checkfunction(this)" method="post">

Solution 2:

Without ajax you can simply add the checked attribute in PHP. So for example if your radio group has the name radio and one has value a, the other b:

<?php
$a_checked = $_POST['radio'] === 'a';
$b_checked = $_POST['radio'] === 'b';
?>

<input type="radio" name="radio" value="a"<?=($a_checked ? ' checked' : '')?>></input>
<input type="radio" name="radio" value="b"<?=($b_checked ? ' checked' : '')?>></input>

So when a user submits the form and you display it again, it will be like the user submitted it even the page refreshes.

Solution 3:

<input type="radio" name="rbutton" id="r1">R1
<input type="radio" name="rbutton" id="r2">R2
<input type="button" id="go" value="SUBMIT" />
<div id="result"></div>

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript">

$(document).ready(function(){
    $('#go').click(function(){
        var val1 = $('input:radio[name=rbutton]:checked').val();
        var datastring = "partialName="+val1;
        $.ajax({
            url: "search.php",
            type: "POST",
            data: datastring,
            success: function(data)
            {
                $("#result").html(data);
            }
        });
    });
});
</script>