javascript subtract code example

Example 1: javascript subtract days from date

var myCurrentDate=new Date();
var myPastDate=new Date(myCurrentDate);
    myPastDate.setDate(myPastDate.getDate() - 8);//myPastDate is now 8 days in the past

Example 2: javascript 1 + "1"

console.log(10+"1"); //101
console.log(10-"1"); //9