Javascript

Question

let client = {
    main_account_balance: 0,
    balance_setter: function(value) {
      console.log(value);
      console.log('balance_setter');
      this.main_account_balance = value;
    }
};

每当客户的字段 main_account_balance 设置如下时：

client.main_account_balance = 15;

它工作得很好。每当我尝试使用时都会出现问题：

client.balance_setter(15);

它不会改变

的值

main_account_balance

完全

Answer 1

似乎对我来说很好。

let client = {
    main_account_balance: 0,
    balance_setter: function(value) {
      this.main_account_balance = value;
      //console.log('balance_setter');
      //console.log(this.main_account_balance);
    }
};

function increment() {
 client.balance_setter(client.main_account_balance+1);
  document.getElementById('value').innerHTML = 'main_account_balance = '+client.main_account_balance
}

document.getElementById('button').addEventListener('click', increment);

<button id="button">
click
</button>
<h1 id="value">

</h1>

Javascript - 简单的 OOP 封装

Javascript - simple OOP encapsulation

class

getter-setter