CODEWITHSUNDEEP
javascript
Ishank Gupta
Ishank Gupta

Reputation: 1593

setDate method overriding original date

I am using javascript setDate method to do some date manipulation due to which my value of originalDate value is lost. Here is what I am trying :

var originalDate = new Date();
var newDate = originalDate;
newDate.setDate(15);

I want that setDate() should only update newDate variable, not the originalDate. How can I do that.

Thanks.

Upvotes: 0

Views: 498

Answers (2)

Xotic750
Xotic750

Reputation: 23502

Your problem is that you are assigning the reference of originalDate to newDate, so they both point at the same Date object.

Another possibility:

Javascript

function cloneDate(dateObject) {
    return new Date(dateObject.valueOf());
}

var originalDate = new Date(),
    newDate = cloneDate(originalDate);

newDate.setDate(15);

console.log(originalDate);
console.log(newDate);

Output

Tue Feb 25 2014 07:13:53 GMT+0100 (CET)
Sat Feb 15 2014 07:13:53 GMT+0100 (CET)

On jsFiddle

This creates newDate with same value as originalDate, but now they are 2 distinct objects .

Upvotes: 3

Satish Sharma
Satish Sharma

Reputation: 9635

try this

var originalDate = new Date();
var newDate = new Date();
newDate.setDate(15);

Upvotes: 0

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