How to pass parameter from javascript to Ajax function

Question

Hello I need help on this, I have this code

<a href="javascript:void(0);" onclick="removerow('.$row["sn"].');">
     <i class="fa fa-remove" style="color: red"></i>
</a>

and i need to get value from onclick="removerow('.$row["sn"].') to this function

function removerow() 
{
    var vpb_sn = _______.val();
}

Answer 1

Pass value:

onclick="removerow('.$row["sn"].');"

Accept it:

function removerow(value) 
{
    // and you can use it just like variable
    console.log(value);
}

Sends var to php file (using jquery ajax):

function removerow(value) 
{
    $.ajax({
        url: 'index.php', // here path to php file
        type: 'post',  //type of a query
        data: {myVariable: value}, // data which sends into php file
        success: function (data) {
            alert('sended successfully!');
        }
    });
}

And then, inside index.php (file, on which data was sended), we can saw our data using this:

$_POST['myVariable'];