javascript - On first time visit- popup a div asking user name, then store it and the date on local storage -

the problem here never goes else statement; tried creating flag check when goes if , changing didn't work

var ouser = {}; // add name js if (!ouser.name) {     ouser.name = prompt("enter name: ") // add name js      localstorage.name = ouser.name     // time     ouser.date = new date().toutcstring();     localstorage.date = ouser.date; } else {     var msgdis = document.getelementbyid('msgdisplay');     msgdis.innerhtml = "hi " + localstorage.name + " welcome back!" + " -->date: " + localstorage.date; } 

ouser.name undefined, !ouser.name pass. you're creating ouser empty object (var ouser = {};), checking data member never defined.

you should checking if localstorage set:

// declare ouser in global scope, empty object var ouser = {}; // check browser support of localstorage if(typeof(localstorage) == 'undefined') {     // check failed, alert user     alert('your browser not support localstorage method!'); } else {     // wrapping in try...catch block, incase cookies disabled     try {         // attempt pull ouser (by key) localstorage, failure results         // in ouser being empty object.         ouser = json.parse(localstorage.getitem('ouser'))||{};         // check if ouser.name not set         if(!ouser.name) {             // prompt user name             ouser.name = prompt("enter name: ");             // insert current date             ouser.date = (new date()).toutcstring();             // save ouser in localstorage, stringified             localstorage.setitem('ouser',json.stringify(ouser));         } else {             // ouser.name set, welcome them             var msgdis = document.getelementbyid("msgdisplay");             msgdisplay.innerhtml = "hi " + ouser.name + " welcome back! -->date: " + ouser.date;         }     } catch(e) {         // cookies disabled, threw error, alert user         alert('to use localstorage, need enable cookies.');     } }