$ .grep来检查数组中是否存在对象

Question

我正在尝试构建一个对象数组，然后更新对象或创建一个新对象，具体取决于是否存在。这是我第一次尝试使用$ .grep函数，我不确定我做错了什么。任何建议？

以下是对象：

function Phase(phase, html, count) {
        this.phase = phase;
        this.html = html;
        this.count = count;
        this.porfolios = [];
    }

    function Portfolio(portfolio, html, count) {
        this.portfolio = portfolio;
        this.html = html;
        this.count = count;
    }

以下是有问题的代码......

var phases = [];
//Check Array of Phases 
result = $.grep(phases, function (e) { return e.phase == item.Phase; });

if (result.length == 0) 
{
     var newphase = Phase(item.Phase, itemhtml, 1)
     phases.push(newphase);
} 
else if (result.length == 1) 
{
 // update existing phase
 result[0].count ++;
 result[0].html += itemhtml;
}

Answer 1

var newphase = Phase(item.Phase, itemhtml, 1)

应该是

var newphase = new Phase(item.Phase, itemhtml, 1)

Answer 2

您需要使用new关键字来创建对象：

var newphase = new Phase(item.Phase, itemhtml, 1);