Formatting date javascript

Question

I'm using var dateString= new Date(parseInt(dateStringUnix)); and I obtain a string as Sun Jun 10 2012 16:40:16 GMT+0200 (ora legale Europa occidentale).

The question is: how can I remove string part GMT+0200 (ora legale Europa occidentale)?

Answer 1

Like this:

dateString = dateString.toString().replace(/ GMT.*/,"");

The above just replaces space before GMT, and everything after GMT including GMT with empyt String.

I've used .toString() to convert Object to String so that .replace() can be used.

• Scimonster: You'll actually need dateString.toString().replace, because even if the OP said string, it's still a Date.

Answer 2

Go for a simple but powerful library like moment.js . May not be needed if it is a small functionality in your project, but it is eventually a swiss army knife for date and related things

Answer 3

This is my current favorite, because it's both flexible and modular. It's a collection of (at least) three simple functions:

/**
 * Returns an array with date / time information
 * Starts with year at index 0 up to index 6 for milliseconds
 * 
 * @param {Date} date date object. If falsy, will take current time.
 * @returns {[]}
 */
getDateArray = function(date) {
 date = date || new Date();
 return [
 date.getFullYear(),
 exports.pad(date.getMonth()+1, 2),
 exports.pad(date.getDate(), 2),
 exports.pad(date.getHours(), 2),
 exports.pad(date.getMinutes(), 2),
 exports.pad(date.getSeconds(), 2),
 exports.pad(date.getMilliseconds(), 2)
 ];
};

Here's the pad function:

 /**
 * Pad a number with n digits
 *
 * @param {number} number number to pad
 * @param {number} digits number of total digits
 * @returns {string}
 */
exports.pad = function pad(number, digits) {
 return new Array(Math.max(digits - String(number).length + 1, 0)).join(0) + number;
};

Finally I can either build my date string by hand, or use a simple functions to do it for me:

/**
 * Returns nicely formatted date-time
 * @example 2015年02月10日 16:01:12
 *
 * @param {object} date
 * @returns {string}
 */
exports.niceDate = function(date) {
 var d = exports.getDateArray(date);
 return d[0] + '-' + d[1] + '-' + d[2] + ' ' + d[3] + ':' + d[4] + ':' + d[5];
};
/**
 * Returns a formatted date-time, optimized for machines
 * @example 2015年02月10日_16-00-08
 *
 * @param {object} date
 * @returns {string}
 */
exports.roboDate = function(date) {
 var d = exports.getDateArray(date);
 return d[0] + '-' + d[1] + '-' + d[2] + '_' + d[3] + '-' + d[4] + '-' + d[5];
};