如何在javascript中使用localstorage for arrays [英] How to use localstorage for arrays in javascript

问题描述

您好！我正在尝试使用本地存储来保存我的一个数组，pokemonchosen.here是代码：

 var pokemonchosen = []; 

如果刷新或浏览器关闭，阵列pokemonchosen会保持原样，我该怎么做？但是我有一个比其他人更奇怪的问题，pokemonchosen没有价值，直到有人购买口袋妖怪，在这种情况下：

 pokemonchosen。 push（Charmander）; 

我如何在购买口袋妖怪的地方设置本地存储？这是口袋妖怪的许多功能之一：

 function buymagikarp（）{
 if（coins> = 100）{
 swal（成功，你买了1个magikarp！，成功）; 
币 -  = 100; 
 pokemonchosen.push（Magikarp）; 
 document.getElementById（p1）。innerHTML =硬币：+硬币; 
 localStorage.setItem（'coins'，coins）; 
} else {
 swal（错误，余额不足，错误）; 
} 
} 

谢谢:-)



我尝试过：

 if（pokemonchosen！= undefined）{
 var JSONReadyUsers = JSON.stringify（pokemonchosen）; 
 localStorage.setItem（'pokemonchosen'，JSONReadyUsers）
} 

解决方案

你的代码我有什么试过会工作，所以你已经有了！以下是如何再次加载数组：

 pokemonchosen =  JSON  .parse（localStorage.getItem（ '  pokemonchosen'））; 

< a href =https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse> JSON.parse（） - JavaScript | MDN [ ^ ]

Hello! I am trying to use local storage to save one of my arrays, pokemonchosen.here is the code:

var pokemonchosen = [];

How would I make it to where if refresh or browser close, the array pokemonchosen stays like it is? But I have a weirder problem than others, pokemonchosen doesn't have a value until someone buys a pokemon, in which case:

pokemonchosen.push("Charmander");

How would I make it where sets local storage on buy pokemon? This is one of many functions for pokemon:

function buymagikarp() {
  if(coins >= 100 ) {
    swal("Success", "You bought 1 magikarp!", "success");
    coins -= 100;
    pokemonchosen.push("Magikarp");
    document.getElementById("p1").innerHTML = "Coins: " + coins;   
    localStorage.setItem('coins', coins);
  } else {
    swal("Error", "Not enough balance", "error");
  }
}

Thank you :-)

What I have tried:

if(pokemonchosen != undefined) {
var JSONReadyUsers = JSON.stringify(pokemonchosen);
localStorage.setItem('pokemonchosen', JSONReadyUsers)
}

解决方案

Your code in "What I have tried" will work, so you have that already! Here is how you can load the array again:

pokemonchosen = JSON.parse(localStorage.getItem('pokemonchosen'));

JSON.parse() - JavaScript | MDN[^]

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