View Full Version : Edge "SCRIPT3: Member not found" on create Ext.data.Store

12 Jun 2017, 2:47 AM
Hi All,
Sometimes I catch a strange exception in Edge when I create Ext.data.Store.

this.myStore = Ext.create('Ext.data.Store', {
model: 'MyModel',
proxy: {
type: 'localstorage',
reader: {
type: 'json'

This led me to the code in the ext.js file:

Ext.define('Ext.data.proxy.LocalStorage', {
extend: Ext.data.proxy.WebStorage,
alias: 'proxy.localstorage',
alternateClassName: 'Ext.data.LocalStorageProxy',
getStorageObject: function() {
return window.localStorage;

This error does not always appear. The strangest thing is that this error persists even after the page is reloaded and disappears only after opening the page in a new tab.

Any ideas?

ExtJs 4.2.4

Gary Schlosberg
14 Jun 2017, 3:45 PM
Strange error -- I couldn't find any matching reports. Support for Ext JS 4 stopped December 31st, but perhaps someone in the community has experienced this and can share.