change button text in js/ajax after mp4 =>mp3 conversion in php

Question

I am working on html table rows (which is two at this moment) as shown below in which on button click:

=> JS/jQuery

Answer 1

Try changing this:

$.ajax({
            url: 'convert.php',
            type: 'POST',
            data: {id: target}, //change to what you want
            success: function(res)
            {   
            },
            error: function(res)
            {
            }
        })

To this:

$.ajax({
        url: 'convert.php',
        type: 'POST',
        data: {id: target}, //change to what you want
        success: function(res)
        {   
//You can add $(".go-btn").html('completed'); to here, but I prefer the other way.
        },
        error: function(res)
        {
// This is unnecessary if you are not gonna make it do anything if error occurs.
        }
    }) 
.done(function(data) {
$('.go-btn').html('Completed!');
//This fires when AJAX call suceeds the process. As a side note, "data" is what your .php code outputs, so you can do whatever you want to do with it.
});

And also see my comments. I hope this helps.