Convert PHP Curl Request to Javascript

Question

How can I convert following PHP Curl Request to Javascript POST?

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL,"https://accounts.google.com/o/oauth2/token");
    curl_setopt($ch, CURLOPT_POST, TRUE);
    curl_setopt($ch, CURLOPT_HTTPHEADER, [ 'Content-Type: application/x-www-form-urlencoded']);
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
        'code'          => $code,
        'client_id'     => $client_id,
        'client_secret' => $client_secret,
        'redirect_uri'  => $redirect_uri,
        'grant_type'    => 'authorization_code',
    ]));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
    curl_close ($ch);

I tried something like below. But getting 400 bad request error. How can I set CURLOPT_RETURNTRANSFER here. Or am I doing something wrong?

         $.ajax({
               type: 'POST',
                url: "https://accounts.google.com/o/oauth2/token",
                contentType: 'application/x-www-form-urlencoded',
                dataType: 'json',
                data: {
                    client_id: client_id,
                    client_secret: client_secret,
                    code: code,
                    redirect_uri: redirect_uri,
                    grant_type: grant_type,
                },

                success: function (data) {
                    $('#response').html(data);
                },
                error: function (e) {
                    $('#response').html(e.responseText);
                }             
        });

SkyRar · Accepted Answer · 2019-11-10 02:18:57Z

I had done a mistake $('#response').html(data); should be $('#response').html(JSON.stringify(data, null, " "));;. Also keep in note Auth code works only once. To get a new access token use refresh token that you have got from the first response

$.ajax({
            type: 'POST',
            url: "https://accounts.google.com/o/oauth2/token",
            contentType: 'application/x-www-form-urlencoded; charset=utf-8',
            crossDomain:true,
            cache : true, 
            dataType: 'json',
            data: {
                client_id: client_id,
                client_secret: client_secret,
                code: code,
                redirect_uri: redirect_uri,
                grant_type: grant_type,
            },

            success: function (data) {
                $('#response').html(JSON.stringify(data, null, " "));;
            },
            error: function (e) {
                $('#response').html(e.responseText);
            }
        });

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