Question

I have this code :

$.ajax({
    type: "POST",
    url: "tosql.php",
    data: {
        content, content
   }
});

I was wondering how I could get a callback from tosql.php (the result) and add that html to div class = "content"

Answer 1

Do that within the success callback:

$.ajax({
    type: "POST",
    url: "tosql.php",
    data: {
        content: content
    },
    success: function(html) {

        // you said 'add' so I'm assuming '.append'
        // if you meant fill/replace then use `.html(html);`
        $("div.content").append(html);
    }
});

Also (if it’s not a typo on your part), object property names and values are separated by the colon:

    data: {
        content: content
    },

and not the comma:

    data: {
        content, content
    },