$ .grep检查对象是否存在于数组中

I am trying to build an array of objects and then either update the object or create a new one depending if one does not exist. This is my first time trying to use the $.grep function and I am not sure what I am doing wrong. Any Advice?

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。有什么建议吗?

Here are the objects:

这是对象:

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;
    }

Here is the code in question....

这是有问题的代码....

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;
}

2 个解决方案

#1

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

should be

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

#2

You need to use the new keyword to create an object:

您需要使用new关键字来创建对象:

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