javascript - How to get correct integer value if we give more that 16 digit number? - Stack Overflow

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In my code I am getting an input value (integer variable) more that 16 digit number not able to get correct value.

HTML:

<div><input id="number_id" value="111111111111111111"></div>

Script:

$("#number_id").blur(function(){
var ns = $("#number_id").val();
alert(Number(ns))
});    

any one have solution please help me.

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In my code I am getting an input value (integer variable) more that 16 digit number not able to get correct value.

HTML:

<div><input id="number_id" value="111111111111111111"></div>

Script:

$("#number_id").blur(function(){
var ns = $("#number_id").val();
alert(Number(ns))
});    

any one have solution please help me.

http://jsfiddle/Qntr2/

• javascript
• jquery

Share Improve this question Follow edited Feb 5, 2014 at 7:45 Liath 10.2k1010 gold badges5454 silver badges8282 bronze badges asked Feb 5, 2014 at 7:27 MathiMathi 76211 gold badge1010 silver badges1515 bronze badges

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2 Answers 2

Sorted by: Reset to default 6

JavaScript uses 64bit floating point numbers exclusively, which means you only get about 16 decimal digits of precision. This is a fundamental limitation of the number type.

You can store the digits as a string instead. If you need to do putations with numbers this big you'll have to use a library that implements arbitrary precision arithmetic.

All number in javascript can be supported up to 9007199254740992, which is 16 digit numbers. If you store more than that, it will be interpreted wrong. (http://www.2ality./2012/07/large-integers.html)

The best way to do is to store it into string. If you want to do some basic things with big integer, you can use this https://github./jtobey/javascript-bignum

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