Answers for "local storage get item return a"

get localstorage

function get(){
    var getJson = localStorage.getItem('key')
    if(getJson){
        arrayName = JSON.parse(getJson)
    }
}

how to get all items in localstorage

function allStorage() {

    var values = [],
        keys = Object.keys(localStorage),
        i = keys.length;

    while ( i-- ) {
        values.push( localStorage.getItem(keys[i]) );
    }

    return values;
}

localstorage.getitem()

//The following snippet accesses the current domain's local Storage object 
//and adds a data item to it using Storage.setItem().
localStorage.setItem('myCat', 'Tom');

//The syntax for reading the localStorage item is as follows:
const cat = localStorage.getItem('myCat');

//The syntax for removing the localStorage item is as follows:
localStorage.removeItem('myCat');

//The syntax for removing all the localStorage items is as follows:
localStorage.clear();