如何确定空值日期为返回日期12-31-1969 [英] How to fix null value date is returning date 12-31-1969

问题描述

myObj = function MyObject(r) {
        this.Prop = r.Prop
        this.LogIn = new Date(r.LogIn)
        this.Created_Date = new Date(r.Created_Date)
    }

How do I assign empty value "" if r.LogIn is null otherwise Date.

Right now if LogIn is null, its assigning it to date 12-31-1969. 

我尝试过的事情:

What I have tried:

myObj = function MyObject(r) {
        this.Prop = r.Prop
        this.LogIn = function(r){
		       if(r.LogIn ==null){
		           return "";
		       }
		     else{
		      return new Date(r.LogIn);
		     }
        this.Created_Date = new Date(r.Created_Date)
    }

推荐答案

尝试以下操作:

Try this:

this.LogIn = r.LogIn ? new Date(r.LogIn) : "";

条件(三元)运算符-JavaScript | MDN [ ^ ]

Conditional (ternary) Operator - JavaScript | MDN[^]

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