Delete indexeddb data by index

var indexedDB = window.indexedDB || window.webkitIndexedDB || window.mozIndexedDB || window.msIndexedDB;
var IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || { READ_WRITE: "readwrite" };;
var db;
var transaction, objectStore;

var request = indexedDB.open("IndexedDBname", 1);
        request.onsuccess = function (evt) {
       db = request.result;


 var deleteindex = db.transaction(["indexdbtable"], "readwrite")
.objectStore("indexdbtable")
                .delete(1); // example if you want to delete index no 1

deleteindex.onsuccess = function(event) {
console.log("index 1 deleted" + "indexdbtable");  // log
};

 };