How to convert date to milliseconds by javascript?
This question already has an answer here:
One way is to use year, month and day as parameters on new Date
new Date(year, month [, day [, hours [, minutes [, seconds [, milliseconds]]]]]);
You can prepare your date string by using a function.
Note: Month is 0-11, that is why m-1
Here is a snippet:
function prepareDate(d) {
[d, m, y] = d.split("-"); //Split the string
return [y, m - 1, d]; //Return as an array with y,m,d sequence
}
let str = "25-12-2017";
let d = new Date(...prepareDate(str));
console.log(d.getTime());
var dateTokens = "2018-03-13".split("-");
//creating date object from specified year, month, and day
var date1 = new Date(dateTokens[0],dateTokens[1] -1,dateTokens[2]);
//creating date object from specified date string
var date2 = new Date("2018-03-13");
console.log("Date1 in milliseconds: ", date1.getTime());
console.log("Date2 in milliseconds: ", date1.getTime());
console.log("Date1: ", date1.toString());
console.log("Date2: ", date2.toString());In addition to using vanilla javascript, you can also use many libraries to get more functions.
like date-fns, moment.js etc
For example, use moment.js you can convert date to milliseconds by moment('25-12-2017', 'DD-MM-YYYY').valueOf() , more elegant and powerful than vanilla javascript.