[javascript] Remove last 3 characters of string or number in javascript

I'm trying to remove last 3 zeroes 1437203995000

How do i this in javascript. Im generating the numbers from new date() function

Remove last 3 characters of a string

var str = '1437203995000';
str = str.substring(0, str.length-3);
// '1437203995'

Remove last 3 digits of a number

var a = 1437203995000;
a = (a-(a%1000))/1000;
// a = 1437203995

you just need to divide the Date Time stamp by 1000 like:

var a = 1437203995000;
a = (a)/1000;

Here is an approach using str.slice(0, -n). Where n is the number of characters you want to truncate.

var str = 1437203995000;_x000D_
str = str.toString();_x000D_
console.log("Original data: ",str);_x000D_
str = str.slice(0, -3);_x000D_
str = parseInt(str);_x000D_
console.log("After truncate: ",str);