i need a simple payment embed code on other website

i need someone to help me develop a Javascript code that would communicate with php (msqli), the JS embed would be inline and send a post to database and return a callback on same page. Sample js; <script type="text/javascript"> $('#pay-paystack').on('click',function () { // alert('popppp'); var PayStackPubKey = "pk_live_759b037bbe25d4354739f5a708af098a5fa46315"; var amt= '1600.00'; var amtNW = amt * 100; var trx ='153642818910363'; var handler = [login to view URL]({ key: PayStackPubKey, email: 'netpagesonline@[login to view URL]', amount: amtNW, ref: '153642818910363', // generates a pseudo-unique reference. Please replace with a reference you generated. Or remove the line entirely so our API will generate one for you metadata: { // custom_fields: [ // { // display_name: "Mobile Number", // variable_name: "mobile_number", // value: "+2348012345678" // } // ] }, callback: function(response){ // alert('success. transaction ref is ' + [login to view URL]); var pay_ref = [login to view URL]; // collect flwRef returned and pass to a server page to complete status check. [login to view URL] = '/payment-vrxy-response?transaction_id='+pay_ref; [login to view URL]("This is the response returned after a charge",response); }, onClose: function(){ [login to view URL] = '/payment-vrxy-response?transaction_id='+trx; } }); [login to view URL](); }); </script>