Javascript Converting human time to timestamp

Question

Using javascript, How can I convert a \"human time\" string like \"Wed Jun 20 19:20:44 +0000 2012\" into a timestamp value like \"1338821992\"?

Answer 1

Just create a Date object from it and do .getTime() or use Date.parse():

var d = new Date("Wed Jun 20 19:20:44 +0000 2012");
d.getTime(); //returns 1340220044000

//OR

Date.parse("Wed Jun 20 19:20:44 +0000 2012"); //returns 1340220044000

Works great if your "human time" string is in a format that the Date constructor understands (which the example you posted is).

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EDIT

Realized you may mean a Unix timestamp, which is seconds passed since the epoch (not ms like JS timestamps). In that case simply divide the JS timestamp by 1000:

//if you want to truncate ms instead of rounding just use Math.floor()
Math.round(Date.parse("Wed Jun 20 19:20:44 +0000 2012") / 1000); //returns 1340220044