使用JQuery根据生日计算年龄

Question

I am trying to calculate how old a person is with jQuery. I tried using this code but I am not getting any results. I assume that I cannot but a varible in date(). What could I do to make this work?

<p id="age">2015/01/01</p>


var ptag = $('#age');
var birthdate = new Date(ptag);
var cur = new Date();
var diff = cur-birthdate;
var age = Math.floor(diff/31536000000);
alert(age);

Answer 1

您需要获取#age元素的内容 ，而不是元素本身。

var ptag = $('#age').text();

Answer 2

var age = new Date() - new Date($('#age').text());
age /= 31536000000;

$(selector).text() will return the content of a DOM element as a text. And since we do not want to use a bunch of variables, we simply define one, as the difference of two dates: the 'now' minus the one from the text. And since the above is in miliseconds, we devied it... and that will return age in years.

jQuery .text()