本地存储不接受来自对象的值

Question

im trying to set x's age to the local storage item 'age' however, for a reason i do not know, this will not work.

Here is my code:

var x = {
age: 37,
gender: "male",
income: 17000,
};
localStorage.setItem("age") = x.age;
alert(localStorage.getItem('age'));

Answer 1

The problem is with your syntax . You need to use it this way.

localStorage.setItem("age", x.age)

alert(localStorage.getItem('age'));

The idea is simple. You are storing the data against a name. And then retrieve it using the same name.

Answer 2

Open the Developer Tools in your browser. Look at the console.

Uncaught TypeError: Failed to execute 'setItem' on 'Storage': 2 arguments required, but only 1 present.

Then look at the manual which says:

 storage.setItem(keyName, keyValue);

Then get your syntax correct:

var x = {
  age: 37,
  gender: "male",
  income: 17000,
};
localStorage.setItem("age", x.age);
alert(localStorage.getItem('age'));