How to Delete a Localstorage Item When the Browser Window/Tab Is Closed

how to remove local storage when the closing browser or closing tab in javascript, angular and react

See this answer here

You can use

window.addEventListener("beforeunload", function(e){
   // clean localStorage here
}, false);

Is it possible to delete localstorage item on window close?

If you dont want items to persist, you can save the data in SessionStorage:

$(document).ready(function() {
    if(window.location.href.match('utm_*')) {
        var utmData =  {
        utm_source: getParameterByName('utm_source'),
        utm_medium: getParameterByName('utm_medium'),
        utm_campaign: getParameterByName('utm_campaign'),
        gclid: getParameterByName('gclid')
        }
        if(!sessionStorage.getItem('utmData')) {
            sessionStorage.setItem('utmData', JSON.stringify(utmData));
        }else if(SessionStorage.getItem('utmData')){
            sessionStorage.removeItem('utmData');
            sessionStorage.setItem('utmData', JSON.stringify(utmData));
        }                           
    }
});

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