Question

我正在计算DOB的年龄，但是当我返回值时，它会显示＆＃39; 0＆＃39;更多见下面的代码

 var birth  = new Date('DOB');
 var curr  = new Date();
 var age; // this is integer type in database
 if(birth != null)
 {
     var diff = curr - birth;
     age= Math.floor(diff / (1000 * 60 * 60 * 24 * 365.25));
 } else {
     age=' ';  // while i return space from here it shows '0' on my output 
 }

我如何展示＆＃39; 0＆＃39;

的空间

Answer 1

将null替换为var curr = new Date(); var age; // this is integer type in database if(R2 != null && R2 != undefined ) { var diff = curr - birth; AGE= Math.floor(diff / (1000 * 60 * 60 * 24 * 365.25)); }else AGE=' '; // while i return space from here it shows '0' on my output }。 null它不是字符串。

{{1}}

Answer 2

我对你的代码做了很少的修改，因为我无法修改它的结构。主要变化是检查age是零还是小于零，因为如果出生日期是去年，原始代码确实返回0或甚至负数或将来。这应该有用。

var birth = new Date('DOB');
var curr = new Date();
var age; // this is integer type in database
if (birth != null)
{
    var diff = curr - birth;
    age = Math.floor(diff / (1000 * 60 * 60 * 24 * 365.25));
    if (age < 1) {
        age = ' ';
    }
} else {
    age = ' ';  // while i return space from here it shows '0' on my output 
}

用javascript替换零（整数）空格（字符串）

2 个答案: