Is there any limitation for integer in javascript?

Question

Possible Duplicate:
What is JavaScript's Max Int? What's the highest Integer value a Number can go to without losing precision?

Hi, I am assigning a php value(obtained from POST) to a javascript variable. When I alert this value,only 17 digits appear. Rest are replaced by 0. However when I echo the post it is fine. The code is below:

<?php
$data = $_POST['data'];  // value here is 12345678901234567890
?>
<script>
var d = <?php echo $data ?>
alert(d);  // value here is 12345678901234567000
</script>

Any idea why this happens?

what is the actual value obtained from the POST? – Tim B James Apr 14 '11 at 08:09 — Tim B James, Apr 14 '11 at 08:09

score 0 · Answer 1 · answered Apr 14 '11 at 08:06

0

Here is the complete Javascript number reference;

http://www.hunlock.com/blogs/The_Complete_Javascript_Number_Reference

From within the reference you can see that type integer is accurate to 15 digits.

answered Apr 14 '11 at 08:06

Brian Scott

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score 0 · Accepted Answer · answered Apr 14 '11 at 08:11

0

From the Mozilla Docs

The MAX_VALUE property has a value of approximately 1.79E+308. Values larger than MAX_VALUE are represented as "Infinity".

See an example here

answered Apr 14 '11 at 08:11

Swaff

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That's the maximum real value, but because all integers in JavaScript are represented as 64-bit doubles, the maximum integer value you can store is 9007199254740992. The maximum safe integer value you should store is 9007199254740991, which is 2^53-1. What you're looking for is Number.MAX_SAFE_INTEGER. – John Kurlak Jul 24 '15 at 15:17

Is there any limitation for integer in javascript?

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