I am currently working with a JSON object in JavaScript and my goal is to arrange the object based on dates in ascending order.
fileListObj[id] = date;
output : "#HIDDEN ID": "16/12/2013"
What steps should I take to sort the object by the most recent date?
My expertise lies in PHP, so this task is slightly unfamiliar to me.
utilize moment.js library
fileListObj.sort(function(a,b) {
return moment(b, 'DD/MM/YYYY').valueOf() - moment(a, 'DD/MM/YYYY').valueOf();
})
To start, it is important to develop or obtain a reliable date parser. Relying solely on Javascript's built-in Date object can be problematic when parsing raw strings (see this discussion on Stack Overflow).
Next, utilize the Array.prototype.sort() method:
function parseDate(input) {
var parts = input.split('/');
return new Date(parts[2], parts[1]-1, parts[0]);
}
function sortAsc(a,b)
{ return parseDate(a.date) > parseDate(b.date); }
function sortDesc(a,b)
{ return parseDate(a.date) < parseDate(b.date); }
list.sort(sortAsc);
Below is an example showcasing a sorted table containing dates in ISO format:
var dates = ["12/05/2012", "09/06/2011","09/11/2012"]
var sorted=[];
for(var i=0, i= dates.length;i++){
var p = dates[i].split(/\D+/g);
sorted[i]= new Date(p[2],p[1],p[0]);
}
alert(sorted.sort(function(a,b){return b-a}).join("\n"));
If you wish to maintain the same input format, utilize the following function:
function formatDate(d)
{
date = new Date(d)
var dd = date.getDate();
var mm = date.getMonth()+1;
var yyyy = date.getFullYear();
if(dd<10){dd='0'+dd}
if(mm<10){mm='0'+mm};
return d = dd+'/'+mm+'/'+yyyy
}
sorted.sort(function(a,b){return b-a})
formatSorted = []
for(var i=0; i<sorted.length; i++)
{
formatSorted.push(formatDate(sorted[i]))
}
alert(formatSorted.join("\n"));
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