Answers for "check if item exists in local storage javascript"

how to check if local storage variable exists in javascript

if (localStorage.getItem("username") === null) {
  //...
}

check if item exists in localstorage javascript

//If the given key does not exist in the list associated with the object then this method must return null.

if (localStorage.getItem("infiniteScrollEnabled") === null) {
  //...
}