d3.js - Problems with loading Javascript -


hi i've started javascript , wanted use d3 , met problem:

xmlhttprequest cannot load https://blahblah/api/votes. no 'access-control-allow-origin' header present on requested resource. origin 'http://localhost:8000' therefore not allowed access.

this problem shown in console.

attached code:

<!doctype html>  <html>  <head>     <title>testbed!</title>     <script src="http://d3js.org/d3.v3.min.js"></script>     <script type="text/javascript"></script> </head>  <body>      <script>          d3.select("body").append("p").text("hi, whats up");         console.log(d3);          d3.json("https://blahblah/api/votes", function(data) {              var canvas = d3.select("body").append("svg")                         .attr("width", 500)                         .attr("height", 500)              canvas.selectall("rect")                         .data(data) //the data in bracket because our function uses varible data                         .enter()                             .append("rect")                             .attr("width", function(d) { return d; })                             .attr("height", 50)                             .attr("y", function(d,i) { return i*10; })                             .attr("fill", "blue");              canvas.selectall("text")                         .data(data)                         .enter()                             .append("text")                             .attr("fill", "white")                             .attr("y", function(d,i) { return i*50; })                             .text(function (d) { return d.document_id + 25; })          })     </script>  </body>  </html>

can give me clues going on?


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