HarmonyOS webview是否支持indexDB存储

window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB; 
window.IDBTransaction  = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction 
window.IDBKeyRange= window.IDBKeyRange || window.webkitIDBKeyRange || msIDBKeyRange 
 
if(!window.indexedDB){ 
  console.log('不支持indexedDB存储') 
}else{ 
  console.log('支持indexedDB存储') 
}