节点JS Ajax请求变量

Question

I have to make a query that gets me all the information from the client with a certain ID. The problem is that I can't get the ID in the route right. I have this ajax call:

 $.ajax({
      type: 'GET',
      url: '/client',
      data: id,
      success: function (result) {
      console.log(result);
      },

And on the route:

global.app.get('/client', function(req, res) {});

How do i get the value of the id on the route?