javascript - 如何将当前日期动态添加到对象的新实例并将其推送到数组

Question

我已经设置了一个函数来以我想要的格式获取当前日期和时间:

function date(){
        var d = new Date();
        var minutes = d.getMinutes();
        var month = d.getMonth() +1;
        if(minutes<10){
            return (d.getDate() + "/" + month + "/" + d.getFullYear() + " " + d.getHours() + ":" + "0" + minutes);
        }else{
            return (d.getDate() + "/" + month + "/" + d.getFullYear() + " " + d.getHours() + ":" + minutes);}
        }

我创建了一个对象，它接受值(amount,date,type)。我如何设置它以便对象的每个新实例都由函数 date() 自动生成日期值，这样当它被推送到数组时 movements添加时间戳？

这是我的代码:

var movements =[];

//transactions
var initialBalance = new Transaction(1000,"date","cash");
var addIn = new Transaction(500,"date","cash");
var addOut = new Transaction(-300,"date","card");

//add the transactions to the movements array
movements.unshift(initialBalance);
movements.push(addIn);
movements.push(addOut);

我想用纯 JS 来做这件事。

Answer 1

也许给对象添加date函数

var Transaction = function(amount, type) {

    this.date = (function() {
        var d = new Date();
        var minutes = d.getMinutes();
        var month = d.getMonth() +1;
        if (minutes<10) {
            return (d.getDate() + "/" + month + "/" + d.getFullYear() + " " + d.getHours() + ":" + "0" + minutes);
        } else {
            return (d.getDate() + "/" + month + "/" + d.getFullYear() + " " + d.getHours() + ":" + minutes);
        }
    })();

    // now deal with amount and type...
}

创建对象后，该函数将自行评估。