Javascript 如何使用空值检查日期到/从
1.示例:条件有效Javascript 如何使用空值检查日期到/从,javascript,Javascript,1.示例:条件有效 date_from = "2014-05-21 16:00:00"; date_now = "2014-05-21 18:00:00"; date_to = "2014-05-21 19:00:00"; date_from = "2014-05-21 16:00:00"; date_now = "2014-05-21 18:00:00"; date_to = null; date_from = null; date_now = "2014-05-21 18:
date_from = "2014-05-21 16:00:00";
date_now = "2014-05-21 18:00:00";
date_to = "2014-05-21 19:00:00";
date_from = "2014-05-21 16:00:00";
date_now = "2014-05-21 18:00:00";
date_to = null;
date_from = null;
date_now = "2014-05-21 18:00:00";
date_to = "2014-05-21 19:00:00";
2.示例:条件有效
date_from = "2014-05-21 16:00:00";
date_now = "2014-05-21 18:00:00";
date_to = "2014-05-21 19:00:00";
date_from = "2014-05-21 16:00:00";
date_now = "2014-05-21 18:00:00";
date_to = null;
date_from = null;
date_now = "2014-05-21 18:00:00";
date_to = "2014-05-21 19:00:00";
3.示例:条件有效
date_from = "2014-05-21 16:00:00";
date_now = "2014-05-21 18:00:00";
date_to = "2014-05-21 19:00:00";
date_from = "2014-05-21 16:00:00";
date_now = "2014-05-21 18:00:00";
date_to = null;
date_from = null;
date_now = "2014-05-21 18:00:00";
date_to = "2014-05-21 19:00:00";
4.示例:条件无效
date_from = "2014-05-21 16:00:00";
date_now = "2014-05-21 18:00:00";
date_to = "2014-05-21 17:00:00";
我有这种情况:
if (data1.date_from <= voting_started && voting_started <= data1.date_to) {
//abc
}
if(data1.date\u from将其标准化
在您的如果
添加以下内容:
if(!date_to) {
date_to = voting_started;
};
if(!date_from) {
date_from = voting_started;
}
使其正常化
在您的如果
添加以下内容:
if(!date_to) {
date_to = voting_started;
};
if(!date_from) {
date_from = voting_started;
}
使其正常化
在您的如果
添加以下内容:
if(!date_to) {
date_to = voting_started;
};
if(!date_from) {
date_from = voting_started;
}
使其正常化
在您的如果
添加以下内容:
if(!date_to) {
date_to = voting_started;
};
if(!date_from) {
date_from = voting_started;
}
或:
if((data1.date_from==null | | data1.date_from或:
if((data1.date_from==null | | data1.date_from或:
if((data1.date_from==null | | data1.date_from或:
if((data1.date_from==null | | data1.date_from