如何从本地存储中检索数据？ [英] how to retrieve data from local storage?

问题描述

我已经使用javascript创建了一个注册表单，数据存储在本地存储中，但我想从本地存储中检索数据以便登录，以下是我的controller.js -

I have created a register form using javascript from which data is getting stored in the local storage,but I want to retrieve data from local storage for login purpose, following is my controller.js-

//Storing data from local storage into an array of objects
 var usersdata = JSON.parse( localStorage.getItem('key_users' ) );
function validatelogin()
{
    usersdata = JSON.parse( localStorage.getItem('key_users' ) );
    var usernameinput   = document.getElementById("username");
    var passwordinput   = document.getElementById("password");
    for(var p in userdata)
    {
      console.log(p+':'+userdata[p].username+'|'+userdata[p].email);
      if(usernameinput==userdata[p].username && passwordinput==userdata[p].password)
      {
         alert("Logged in successfully");
      }
    }
}

尝试登录时，没有定义给出'userdata'的错误。请帮忙解决代码中的错误吗？

While trying to login, its giving error called 'userdata' is not defined..Please help with whats wrong in the code?

推荐答案

在<$ c里面$ c> for 循环更改 userdata 到 usersdata

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