javascript store array in localstorage
//storing array in localStorage
var colors = ["red","blue","green"];
localStorage.setItem("my_colors", JSON.stringify(colors)); //store colors
var storedColors = JSON.parse(localStorage.getItem("my_colors")); //get them backlocalstorage save array
var names = [];
names[0] = prompt("New member name?");
localStorage.setItem("names", JSON.stringify(names));
//...
var storedNames = JSON.parse(localStorage.getItem("names"));js save and load an array of different types into localstorage
var myArray = [1,"word",23,-12,"string"];//your list of values, they can be strings or numbers
//SAVING
function save(a,b,c,d,e) {//the number of parameters you add is how many items you save
var itemArray = [a,b,c,d,e];//number of items here must be the same as number of parameters
var keyArray = ["one","two","three","four","five"];//must be same length as itemArray
for (var i = 0; i < keyArray.length; i++) {
if (typeof(itemArray[i]) === "number") {
itemArray[i] = "+"+itemArray[i];//leave a reminder that it was a number
}
if (typeof(itemArray[i]) !== undefined) {
localStorage.setItem(keyArray[i],itemArray[i]);//only add a value to the current key if it's not undefined
}
}
}
//to use the function (whenever you want to save):
save.apply(this, myArray);//assuming that myArray is the array you want to set
//LOADING
function load() {
var list = [];
var keyArray = ["one","two","three","four","five"];
for (var i = 0; i < keyArray.length; i++) {
var item = localStorage.getItem(keyArray[i]);
if (item.charAt(0) == "+") {
item = parseFloat(item.substring(1));
}
list.push(item);
}
return list;
}
//to use the function
myArray = load();//sets your array back to how it was when you saved ithow-to-save-array in Local storage - js
// our array
var movies = ["Reservoir Dogs", "Pulp Fiction", "Jackie Brown",
"Kill Bill", "Death Proof", "Inglourious Basterds"];
// storing our array as a string
localStorage.setItem("quentinTarantino", JSON.stringify(movies));
// retrieving our data and converting it back into an array
var retrievedData = localStorage.getItem("quentinTarantino");
var movies2 = JSON.parse(retrievedData);
//making sure it still is an array
alert(movies2.length);Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
