Iam通过保持今天的日期和所选日期来计算年龄。
如果我说今天（2016年4月28日） - 确切的3年正确显示
如果我说昨天（2016年4月27日） - 仍然显示3年，这不应该是3天的1天。我不知道我的代码在哪里做错了。
感谢您的帮助！
示例代码：
var getMonth, getDay, getYear, getDate, dob, today, age;
$(document).on('change', '#node_enfamama_registration_form_form_group_enr_hide_child_info .form-select', function() {
$(this).each(function() {
if ($(this).parents().hasClass('date-month')) {
getMonth = $(this).val();
alert(getMonth)
}
else if ($(this).parents().hasClass('date-day')) {
getDay = $(this).val();
alert(getDay)
}
else if ($(this).parents().hasClass('date-year')) {
getYear = $(this).val();
alert(getYear)
getDate = getYear + "-" + getMonth + "-" + getDay;
alert("Month, day & year" + getDate)
$('.greater-msg').remove();
$('.less-then-msg').remove();
dob = new Date(getDate);
today = new Date();
age = Math.floor((today - dob) / (365.25 * 24 * 60 * 60 * 1000));
alert("Child Age is " + age)
//debugger;
/*
var birthDate = new Date(getDate);
var age = today.getFullYear() - birthDate.getFullYear();
var m = today.getMonth() - birthDate.getMonth();
if (m < 0 || (m === 0 && today.getDate() < birthDate.getDate())) {
alert("aaa" + age)
age--;
}*/
if (age > 3) {
//debugger;
$(this).parents('.fieldset-wrapper').after('<div class="greater-msg">You can also visit <a href="http://www.enfagrow4.com" target="_blank">www.enfagrow4.com</a> to know how you can keep giving your child the 360 advantage.</div>')
} else if (age <= -1) {
//$(this).parents('.fieldset-wrapper').after('<div class="less-then-msg">Less Disclaimer: In compliance with EO51, Mead Johnson Nutrition cannot directly engage with mothers with children aged 0 to 3 years old. All content that you will receive via email will only be regarding your pregnancy. </div>')
} else if (age >= 0 && age <= 3) {
$(this).parents('.fieldset-wrapper').after('<div class="less-then-msg">Less Disclaimer: In compliance with EO51, Mead Johnson Nutrition cannot directly engage with mothers with children aged 0 to 3 years old. All content that you will receive via email will only be regarding your pregnancy. </div>')
} else {
}
function checkDate(){
}
} else {}
});
});
答案 0 :(得分：1)
Math.floor（）将始终返回一个整数。 当你年龄= Math.floor（...）时，它将是3，而不是3.005。 在显示值时使用Math.floor（），但比较if中的实际结果。 试试这样：
age = (today - dob) / (365.25 * 24 * 60 * 60 * 1000);
alert(age);
alert("Child Age is " + Math.floor(age))
答案 1 :(得分：0)
我已经解决了问题，
(function($) {
Drupal.behaviors.addChild = {
attach: function(context, settings) {
var getMonth, getDay, getYear, getDate, dob, today, age, contentParent;
$('#node_enfamama_registration_form_form_group_enr_hide_child_info .form-select').change(function() {
if ($(this).parents().hasClass('date-month')) {
getMonth = $(this).val();
contentParent = $(this).parents('.draggable');
if (getMonth == undefined || getMonth == "" || getMonth == null || getDay == undefined || getDay == "" || getDay == null || getYear == undefined || getYear == "" || getYear == null) {} else {
ageCalculation();
}
} else if ($(this).parents().hasClass('date-day')) {
getDay = $(this).val();
contentParent = $(this).parents('.draggable');
if (getMonth == undefined || getMonth == "" || getMonth == null || getDay == undefined || getDay == "" || getDay == null || getYear == undefined || getYear == "" || getYear == null) {} else {
ageCalculation()
}
} else if ($(this).parents().hasClass('date-year')) {
getYear = $(this).val();
contentParent = $(this).parents('.draggable');
if (getMonth == undefined || getMonth == "" || getMonth == null || getDay == undefined || getDay == "" || getDay == null || getYear == undefined || getYear == "" || getYear == null) {} else {
ageCalculation()
}
} else {}
});
function ageCalculation() {
getDate = getYear + "-" + getMonth + "-" + getDay;
dob = new Date(getDate);
today = new Date();
age = (today - dob) / (365.25 * 24 * 60 * 60 * 1000);
if (age < 3 || age == 3 || age > 3 && age < 3.00452422294471007) {
$('.greater-msg, .less-then-msg').remove();
$(contentParent).find('.fieldset-wrapper').after('<div class="less-then-msg">Disclaimer: In compliance with EO51, cannot directly engage with mothers with children aged 0 to 3 years old. All content that you will receive via email will only be regarding your pregnancy. </div>')
} else if (age > 3) {
$('.greater-msg, .less-then-msg').remove();
$(contentParent).find('.fieldset-wrapper').after('<div class="greater-msg">You can also visit <a href="http://www.enfagrow4.com">www.enfagrow4.com</a> to know how you can keep giving your child the 360 advantage.</div>')
}
if (age <= -1 || age <= -0 || age == 0 || age == -0) {
$('.greater-msg, .less-then-msg').remove();
}
}
}
};
})(jQuery);