use graphql variables for postid

js/viewPost.js

@@ -27,8 +27,10 @@ async function loadPost() {
         content.innerHTML = "<h1>404 - Post not found</h1>";
     } else {
         var graphql = JSON.stringify({
-        query: 'query {blogPost(id: "' + id + '") {content title}}',
-        variables: {}
+        query: 'query($postID: String!) {blogPost(id: $postID) {content title}}',
+        variables: {
+            "postID": id
+        }
         })
         var requestOptions = {
         method: 'POST',