javascript - Need an alert on first log in -

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i have requirement show alert box when user logs in first time.

i used localstorage method below:

var visited = localstorage.getitem('visited');  if (!visited) {     alert("please view firefox" + visited); }

however, seems working, doesnot work on every login, works when page visited first time.

please let me know if there way it. please note, using javascript functionality done.

thanks, ark


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