Access-Control-Allow-Origin problem

No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://localhost:3000’ is therefore not allowed access.

It would be helpful to know what you’re trying to achieve but, taking a punt, try this.

i want to integrate a sms API,this is the code :
{username : ‘’, password : ‘rb27vm95’},
function(data) {
alert('page content: ’ + data);
when i use this code in client side i have the No Access-Control-Allow-Origin