how to parse the value returned by truffle ?

Question

I need the value of string. Also, what is the significance of s , e , c .

truffle(development)> x.then(function(result) { 
     console.log(result[4]);});}});
    undefined
    truffle(development)> 
{ [String: '100000000000000000000'] s: 1, e: 20, c: [ 1000000 ] }

I am able to fetch result[4].s or result[4].e

Sorry if this is a simple question. I am very new to javascript environment.

Answer 1

This is BigNumber. See A note on big numbers in web3.js.

You can convert it to string using toString method:

> const n = new web3.BigNumber('1234567890');
> n.toString()
'1234567890'
> n.toString(16)
'499602d2'

Also it seems that your return value is somehow related to money (ether or some other tokens). In this case you may find useful functions like web3.fromWei and web3.toWei:

> const n = new web3.BigNumber('100000000000000000000');
> web3.fromWei(n, 'ether').toString();
'100'