[英]Object Values Not Updating and Don't Know Why
我有一個構造函數來創建帳戶並管理其數據,如下所示:
function account(fname, lname){
this.checking = 0;
this.savings = 0;
this.total = this.checking + this.savings;
this.openDate = new Date();
this.transactions = [];
this.firstName = fname;
this.lastName = lname;
this.deposit = (account, amount) => {
account += amount;
};
this.withdrawal = (account, amount) => {
account -= amount;
};
}
...但我遇到的問題是,每當我嘗試使用存款或取款功能時,相關值都不會更新。 我這樣寫:
var client = new account("Name", "Name");
client.deposit(client.checking, 5000);
......仍然沒有骰子。 有什么建議?
編輯:
我一直有 IDE 問題,但我們需要首先將其視為問題(使用 NetBeans)。
字符串和數字是 Javascript 中的不可變屬性,不會通過引用進行修改。 您應該改為修改實際的對象實例值
function account(fname, lname){ this.checking = 0; this.savings = 0; this.total = this.checking + this.savings; this.openDate = new Date(); this.transactions = []; this.firstName = fname; this.lastName = lname; this.deposit = (account, amount) => { this[account] += amount; }; this.withdrawal = (account, amount) => { this[account] -= amount; } } var client = new account("Name", "Name"); client.deposit('checking', 5000); console.log(client);
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