How do I post parameter on d3.json?

Question

I\'m using d3.json to get a dynamic data.

d3.json(\"/myweb/totalQtyService.do\", function(json) {

    drawChart(json);
});

How do I post

Answer 1

If you want to make a request like an HTML form (using query parameters), then you would do:

d3.request("/path/to/resource")
.header("X-Requested-With", "XMLHttpRequest")
.header("Content-Type", "application/x-www-form-urlencoded")
.post("a=2&b=3", callback);

See the docs here: d3-request docs

If you want to convert a simple object to a query parameter string, then you can use the following function:

function obj2Params(params){
  var str = "";
  var amp = "";
  for(var p in params){
    if(params.hasOwnProperty(p)) {
        str += amp + encodeURIComponent(p) + "=" + encodeURIComponent(params[p]);
        amp = "&";
    }
  }
  return str;
}