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guy-a/toFixed.js

Last active May 2, 2018 07:34
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To Fix Javascript toFixed
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toFixed.js
/* https://blog.guya.net/2012/08/18/to-fix-javascript-tofixed/
https://stackoverflow.com/a/11818658/275333 */
function toFixed(num, fixed) {
var re = new RegExp('^-?\\d+(?:\.\\d{0,' + (fixed || -1) + '})?');
return num.toString().match(re)[0];
}
@giorgiobeggiora
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giorgiobeggiora commented May 2, 2018 •
edited

@guy-a the solution you provide simply truncates the result, not adding eventually necessary zeroes, so it can't be used as a replacement of toFixed. Plus, docs says that "The number is rounded if necessary". See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toFixed
So, your function should be called "truncateTo" or similar, and not "toFixed".

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