How can I convert a date into an integer?
I have an array of dates and have been using the map function to iterate through it, but I can't figure out the JavaScript code for converting them into integers.
This is the array of dates:
var dates_as_int = [
"2016-07-19T20:23:01.804Z",
"2016-07-20T15:43:54.776Z",
"2016-07-22T14:53:38.634Z",
"2016-07-25T14:39:34.527Z"
];
var dates = dates_as_int.map(function(dateStr) {
return new Date(dateStr).getTime();
});
=>
[1468959781804, 1469029434776, 1469199218634, 1469457574527]
Update: ES6 version:
const dates = dates_as_int.map(date => new Date(date).getTime())
Using the builtin Date.parse
function which accepts input in ISO8601 format and directly returns the desired integer return value:
var dates_as_int = dates.map(Date.parse);
Here what you can try:
var d = Date.parse("2016-07-19T20:23:01.804Z");
alert(d); //this is in milliseconds
You can run it through Number()
var myInt = Number(new Date(dates_as_int[0]));
If the parameter is a Date object, the Number() function returns the number of milliseconds since midnight January 1, 1970 UTC.
Use of Number()