Is there a built in way in javascript that formats a date object in a format like “Y-m-d H:i:s”?
I use
var since= new Date(xhr.getResponseHeader("Last-Modified"));
alert("modified:: " +since.getDate()+'.'+(since.getMonth()+1)+'. '+ since.getHours()+':'+since.getMinutes())
But that cuts off all leading zeros
You can try this:
function LeadingZero(s,max) {
var z = max-s.length+1;
z = z>1 ? Array(z).join('0') : '';
return (z + s);
}
alert("modified:: " +LeadingZero(since.getDate(),2)+'.'+LeadingZero(since.getMonth()+1,2)+'. '+ LeadingZero(since.getHours(),2));
But I recommend using Moment.js, a library for handling dates in JS. It has built in a formatter and can do a lot of other stuff.
In moment you can do it this way:
var d = moment(since);
alert(d.format('YYYY-MM-DD HH:mm:ss'));
Use this function:
function pad(number) {
if ( number < 10 ) {
return '0' + number;
}
return number;
}
pad(since.getDate())+'.'+pad(since.getMonth()+1)+'. '+ pad(since.getHours())+':'+pad(since.getMinutes())
For Y-m-d H:i:s format use following example:
pad(since.getFullYear()) + '-' + pad(since.getMonth()+1) + '-' + pad(since.getDate()) + ' ' + pad(since.getHours()) + ':' + pad(since.getMinutes()) + ':' + pad(since.getSeconds())
Related
I am trying to convert a date to a string and I am finding that my method works in firefox. But the same code comes up with a different and wrong time in both safari and chrome. I've put my code below. Can anyone see what might be wrong.
$(document).ready(function() {
var regLastSynchTime = new Date(item.date);
regLastSynchTimeStr = formattedTradingHourDateAndTime(regLastSynchTime);
});
var formattedTradingHourDateAndTime = function(date){
var d = pad(date.getDate());
var m = pad(date.getMonth() + 1);
var y = date.getFullYear();
var h = pad(date.getHours());
var mi = pad(date.getMinutes());
var ss = pad(date.getSeconds());
return d + '/'+ m + '/'+y + ' ' + h + ':' + mi + ':' + ss;
}
function pad(number) {
return (number < 10 ? '0' : '') + number;
}
Firefox (right)
Safari (Wrong)
I'm running an update on a table to set a position. I've extracted the query and manually run it on my database and works fine but when passed through connection.query() it seems to think there's a syntax error in my node.js console.
function sendShipPosition(position) {
var input = '';
if (position.moving === true) {
var currentdate = new Date();
var datetime = currentdate.getFullYear() + "-"
+ (currentdate.getMonth()+1) + "-"
+ currentdate.getDate() + " "
+ currentdate.getHours() + ":"
+ currentdate.getMinutes() + ":"
+ currentdate.getSeconds();
var input = ', moving_datetime = ' + datetime;
}
connection.query('UPDATE ships SET x_axis = :x, y_axis = :y' + input + ' WHERE ship_id = :ship_id'), {
x: parseInt(position.x),
y: parseInt(position.y),
ship_id: 1
};
}
Here is the syntax error:
Here's the input data value of 'position' variable:
{ x: '-605', y: '-257', moving: 0 }
I hope I'm not being too much of a dunce and sorry for the low quality question.
Thanks
This function will generate SQL code which is missing quotes around the datetime variable, resulting in invalid SQL code.
function sendShipPosition(position) {
var input = '';
if (position.moving === true) {
var currentdate = new Date();
var datetime = currentdate.getFullYear() + "-"
+ (currentdate.getMonth()+1) + "-"
+ currentdate.getDate() + " "
+ currentdate.getHours() + ":"
+ currentdate.getMinutes() + ":"
+ currentdate.getSeconds();
# Here!
var input = ', moving_datetime = \'' + datetime + '\''
}
connection.query('UPDATE ships SET x_axis = :x, y_axis = :y' + input + ' WHERE ship_id = :ship_id'), {
x: parseInt(position.x),
y: parseInt(position.y),
ship_id: 1
};
}
I have tried many ways to make a live clock (with seconds) appear in a rendered table but it's not working propperly. The clock stays static, not showing second by second. I'm doing the following :
function myTable(){
var table = $('<table></table>');
table.append($('<tr>')
.append($('<td>')
.addClass('col2 data')
.attr('rowspan', '2')
.append($('<span>')
.attr('id', 'date_time')
)
)
)
$("#myDiv").html(table)
}
liveClock();
var liveClock = function () {
date = new Date;
//some logic here to generate the data I need the result above ( no problems here )
result = '' + d + '/' + month + '/' + year + ' ' + h + ':' + m + ':' + s;
var setDateTime = function() {
$("#date_time").html(result);
return false;
};
var everySec = setInterval(setDateTime, 1000);
}
Your problem is that you're never updating result, so each time your code fires SetDateTime, it renders the same date in the table. Move these lines:
date = new Date;
//some logic here to generate the data I need the result above ( no problems here )
result = '' + d + '/' + month + '/' + year + ' ' + h + ':' + m + ':' + s;
Into your setDateTime function.
i'm trying to use the gethours() method in javascript but it keeps returning military time. can someone please help me out fixing it so that it displays clock time? (1-12). Thank you so much!
// Reroute from the conf.js script
var chat = $( '.chat-output' ),
message = function ( message, userId ) {
var dt = new Date(),
time = dt.getHours() + ":" + dt.getMinutes(); // + ":" + dt.getSeconds();
return $( '<div class="chat-message color-' + users[userId] + '">' +
'<div class="chat-id color-' + users[userId] + '"></div>' +
'<div class="chat-user-message">' + message + '</div>' +
'<div class="chat-time">' + time + '</div>' +
'</div>' );
},
addText = function ( text ) {
// log.innerHTML += text;
// log.scrollTop = log.scrollHeight;
console.log( text );
},
addRemoteText = function ( userId, text ) {
// addText( '[' + userId + ']: ' + text+'<br>' );
chat.append( message( text, userId ) );
chat.scrollTop( chat.get( 0 ).scrollHeight );
};
function ampm(date){
var dt= date || new Date,
h= dt.getHours(),
m= dt.getMinutes(),
s= dt.getSeconds(),
ampm;
if(h>12){
h-= 12;
ampm= (h%12)? ' PM': ' AM';
}
else ampm= (h%12)? ' AM': ' PM';
m= m<10? '0'+m: m;
s= s<10? '0'+s: s;
return [h, m, s].join(':')+ampm;
}
ampm()
/* returned value: (String)
11:52:55 PM
*/
Something like this?
var dt = new Date();
var hours = dt.getHours();
var ampm = hours > 11 ? 'PM' : 'AM';
if (hours > 12) {
hours -= 12;
} else if (hours === 0) {
hours = 12;
}
var time = hours + ":" + dt.getMinutes() + ' ' + ampm;
Fiddle
Here's another version of formatting a time in 12 hour format:
// Returns formatted time for given Date object, or
// current system time if d is falsey.
function getTime(d) {
d = d || new Date();
var hrs = d.getHours();
var pad = function(n){return (n<10?'0':'')+ +n};
return pad(hrs%12 || 12) + ':' + pad(d.getMinutes()) + ' ' + (hrs<12? 'AM':'PM');
}
console.log(getTime(new Date(2014,2,24, 0, 5))); // 12:05 AM
console.log(getTime(new Date(2014,2,24,10,25))); // 10:25 AM
console.log(getTime(new Date(2014,2,24,20,15))); // 08:15 PM
Note that 24hr time is preferred in many cases to avoid anomalies like 12:00 AM (which is really neither AM or PM) and 12:00 AM being before 01:00 AM.
I apologise if this is a really basic question but I am using the following jquery plugin:
http://jonathanleighton.com/projects/date-input
I want to change the date from YYYY-MM-DD to DD/MM/YYYY using his suggestion under customisations. I tried to do the following which I thought would work but it completely breaks it:
$.extend(DateInput.DEFAULT_OPTS, {
stringToDate: function(string) {
var matches;
if (matches = string.match(/^(\d{4,4})-(\d{2,2})-(\d{2,2})$/)) {
return new Date(matches[1], matches[2] - 1, matches[3]);
} else {
return null;
};
},
dateToString: function(date) {
var month = (date.getMonth() + 1).toString();
var dom = date.getDate().toString();
if (month.length == 1) month = "0" + month;
if (dom.length == 1) dom = "0" + dom;
return date.dom + "/" + month + "/" + getFullYear();
}
});
It's the following line where it all goes wrong:
return date.dom + "/" + month + "/" + getFullYear();
Could anyone offer a suggestion as to what I'm doing wrong?
You should try using the jQuery UI datepicker. Very easy to format the date
http://jqueryui.com/demos/datepicker/
i don't think you need the "date" in date.dom:
try replacing this:
return date.dom + "/" + month + "/" + getFullYear();
with this:
return dom + "/" + month + "/" + getFullYear();