Convertir la marca de tiempo de Json a la fecha y hora normal en javascript

Question

Tengo una marca de tiempo Json que me gustaría convertir a formato de fecha y hora simple usando javascript.

necesito la fecha y la hora en el siguiente formato: dd-mm-aaaa hr: Mn

Aquí es una fecha de ejemplo JSON del deseo de extraer la marca de tiempo: "marca de tiempo": 1326439500

{ 
    "count": 2, 
    "d": [ 
     { 
     "title": "Apple iPhone 4S Sale Cancelled in Beijing Amid Chaos (Design You Trust)", 
     "description": "Advertise here with BSA Apple cancelled its scheduled sale of iPhone 4S in one of its stores in China’s capital Beijing on January 13. Crowds outside the store in the Sanlitun district were waiting on queues overnight. There were incidents of scuffle between shoppers and the store’s security staff when shoppers, hundreds of them, were told that the sales [...]Source : Design You TrustExplore : iPhone, iPhone 4, Phone", 
     "link": "http://wik.io/info/US/309201303", 
     "timestamp": 1326439500, 
     "image": null, 
     "embed": null, 
     "language": null, 
     "user": null, 
     "user_image": null, 
     "user_link": null, 
     "user_id": null, 
     "geo": null, 
     "source": "wikio", 
     "favicon": "http://wikio.com/favicon.ico", 
     "type": "blogs", 
     "domain": "wik.io", 
     "id": "2388575404943858468" 
     }, 
     { 
     "title": "Apple to halt sales of iPhone 4S in China (Fame Dubai Blog)", 
     "description": "SHANGHAI – Apple Inc said on Friday it will stop selling its latest iPhone in its retail stores in Beijing and Shanghai to ensure the safety of its customers and employees. Go to SourceSource : Fame Dubai BlogExplore : iPhone, iPhone 4, Phone", 
     "link": "http://wik.io/info/US/309198933", 
     "timestamp": 1326439320, 
     "image": null, 
     "embed": null, 
     "language": null, 
     "user": null, 
     "user_image": null, 
     "user_link": null, 
     "user_id": null, 
     "geo": null, 
     "source": "wikio", 
     "favicon": "http://wikio.com/favicon.ico", 
     "type": "blogs", 
     "domain": "wik.io", 
     "id": "16209851193593872066" 
     } 
    ] 
} 

Answer 1

La fecha se devuelve en milisegundos desde época. El código siguiente crea un objeto fecha JS:

var d = new Date(1245398693390); 
var formattedDate = d.getDate() + "-" + (d.getMonth() + 1) + "-" + d.getFullYear(); 
var hours = (d.getHours() < 10) ? "0" + d.getHours() : d.getHours(); 
var minutes = (d.getMinutes() < 10) ? "0" + d.getMinutes() : d.getMinutes(); 
var formattedTime = hours + ":" + minutes; 

formattedDate = formattedDate + " " + formattedTime; 

Aquí es a working fiddle.

Answer 2

<script> 
var timestamp=1326439320; 
var date=new Date(timestamp); 
var hours = date.getHours(); // minutes part from the timestamp 
var minutes = date.getMinutes(); // seconds part from the timestamp 
var seconds = date.getSeconds(); // will display time in 10:30:23 format 
var formattedTime = hours + ':' + minutes + ':' + seconds; 
alert(formattedTime); 
</script> 

Answer 3

Extender prototipo Date 's para incluir una función de formato como tal (o encontrar o crear el suyo propio):

Date.prototype.format = function (formatString) { 
    // Returns a formatted date string 
    var month = this.getMonth() + 1, 
     day = this.getDate(), 
     year = this.getFullYear(), 
     hours24 = this.getHours(), 
     hours = (hours24 === 0 ? 12 : hours24 > 12 ? hours24 - 12 : hours24), 
     meridiem = hours24 >= 12 ? "PM" : "AM", 
     minutes = this.getMinutes(), 
     seconds = this.getSeconds(); 

    return formatString.replace(/(MM)/g, month.padLeft(2, '0')) 
     .replace(/(M)/g, month) 
     .replace(/(dd)/g, day.padLeft(2, '0')) 
     .replace(/(d)/g, day) 
     .replace(/(yyyy)/ig, year) 
     .replace(/(yy)/ig, year.toString().substring(2, 4)) 
     .replace(/(hh)/g, hours.padLeft(2, '0')) 
     .replace(/(h)/g, hours) 
     .replace(/(HH)/g, hours24.padLeft(2, '0')) 
     .replace(/(H)/g, hours24) 
     .replace(/(mm)/g, minutes.padLeft(2, '0')) 
     .replace(/(m)/g, minutes) 
     .replace(/(ss)/g, seconds.padLeft(2, '0')) 
     .replace(/(s)/g, seconds) 
     .replace(/(tt)/g, meridiem.toLowerCase()) 
     .replace(/(TT)/g, meridiem); 
}; 

Entonces, para convertir la fecha y hora en el formato deseado, dd-mm-yyyy hr:mn (como se mencionó en su comentario), que haría lo siguiente:

var dateString = new Date(timestamp).format("dd-MM-yyyy hh:mm"); 

[Editar] Aquí está la función de bloc de acompañamiento:

Number.prototype.padLeft = function (width, padChar) { 
    // Returns a padded string 
    padChar = padChar || ' '; 
    var value = this.toString(); 
    while (value.length < width) { 
     value = padChar + value; 
    } 
    return value; 
};