local storage javascript array
//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
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