When i setDate for one variable another veriable also changed

Question

var currrentdate = lastDate;
currrentdate = new Date(currrentdate.setDate(currrentdate.getDate() + diffDays));

Here i changed only currentdate value. but lastDate value also changed when i set date for currentdate why?

`currrentDate` and `lastDate` refer to the same object, and `setDate` modifies that object. — deceze, Sep 24 '18 at 10:37
you need to clone `lastDate`, not just assign it to `currentData` — azrahel, Sep 24 '18 at 10:39

score 1 · Accepted Answer · answered Sep 24 '18 at 10:48

1

Can you replace var currrentdate = lastDate; this line with var currrentdate = new Date(lastDate);.

This should work fine.

Please reply if you need anything else.

answered Sep 24 '18 at 10:48

Gopal M

score 0 · Answer 2 · answered Sep 24 '18 at 10:39

0

Fundamentals of Javascript language - reference type vs value type:

Read that and search in google "reference type vs value type in javascript" in browser - you will find lots of interesting information.

answered Sep 24 '18 at 10:39

azrahel

2 Answers2