我遇到下面显示的代码问题。
<!DOCTYPE html>
<html>
<head>
<title>
Test jquery-datetimepicker
</title>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8' />
<script src='https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js'></script>
<script src='https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js'></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-datetimepicker/2.5.17/jquery.datetimepicker.full.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jquery-datetimepicker/2.5.17/jquery.datetimepicker.css" />
</head>
<body>
From: <input type=text id=fromDateTime class=stdDateTimePicker name=fromDateTime size=12 value='2018-03-24'>
<span id=fromDateTimeError></span>
<br>
To: <input type=text id=toDateTime class=stdDateTimePicker name=toDateTime size=12 value=''>
</body>
<script>
$('#fromDateTime').focus();
$.datetimepicker.setLocale('da');
$('.stdDateTimePicker').datetimepicker({
format: 'Y-m-d H:i',
dayOfWeekStart: 1,
step: 15
});
function strToDate(str) {
// Test for yyyy-mm-dd
var d = str.match(/^(\d{4})\-(\d{2})\-(\d{2})$/);
if (d) {
var res = new Date(d[1]+'-'+d[2]+'-'+d[3]+'T00:00:00Z');
} else {
// Test for yyyy-mm-dd hh:mm
var dtm = str.match(/^(\d{4})\-(\d{2})\-(\d{2})\ (\d{2})\:(\d{2})$/);
if (dtm) {
var res = new Date(dtm[1]+'-'+dtm[2]+'-'+dtm[3]+'T'+dtm[4]+':'+dtm[5]+':00Z');
} else {
// Test for yyyy-mm-dd hh:mm:ss
var dtms = str.match(/^(\d{4})\-(\d{2})\-(\d{2})\ (\d{2})\:(\d{2})\:(\d{2})$/);
if (dtms) {
var res = new Date(dtms[1]+'-'+dtms[2]+'-'+dtms[3]+'T'+dtms[4]+':'+dtms[5]+':'+dtms[6]+'Z');
} else {
var res;
}
}
}
return res;
}
$('#fromDateTime').focusout(function() {
$('#fromDateTimeError').html('');
var newDateStr = $(this).val();
var newDate = strToDate(newDateStr);
if (!newDate) {
$('#fromDateTimeError').html('Error in date');
$('#fromDateTime').focus();
}
});
</script>
</html>
我希望代码包含字段&#34; From:&#34;当页面显示时,它将保持活动状态,并且在输入有效日期之前应保持活动状态。 我看到的是: 该页面打开,字段为&#34; From:&#34;焦点。 如果我在字段中键入无效日期(字母为fx)并按[Tab],则显示错误文本,内容将替换为datetimepicker和字段&#34; To:&#34指定格式的日期;变得活跃。
如果发现错误,如何禁用datetimepicker?
我如何专注于领域&#34;来自:&#34;只要该字段包含无效内容?