JavaScript - Keep trailing zeroes

javascript parsing trailing
Isadora picture Isadora · Jul 22, 2014 · Viewed 20.6k times · Source

I want to parse a string and I used parseFloat(), but it removes all the trailing zeroes. How to prevent this - I need to parse the string exactly - if I have 2.5000, I need exactly the same result as a floating-point number - 2.5000.

Answer

Chad Scira picture Chad Scira · Jul 22, 2014

You can do

parseFloat(2.5).toFixed(4);

If you need exactly the same floating point you may have to figure out the amount

var string = '2.54355';
parseFloat(string).toFixed(string.split('.')[1].length);

But i don't really understand why you even need to use parseFloat then? Numbers in javascript do not retain the floating-point count. so you would have to keep them as strings, and calculate against them as floats.

Related questions

Parse JSON in JavaScript?

I want to parse a JSON string in JavaScript. The response is something like var response = '{"result":true,"count":1}'; How can I get the values result and count from this?

Read More
Safely turning a JSON string into an object

Given a string of JSON data, how can I safely turn that string into a JavaScript object? Obviously I can do this unsafely with something like: var obj = eval("(" + json + ')'); but that leaves me vulnerable to the JSON …

Read More
Adding a parameter to the URL with JavaScript

In a web application that makes use of AJAX calls, I need to submit a request but add a parameter to the end of the URL, for example: Original URL: http://server/myapp.php?id=10 Resulting URL: http://server/myapp.…

Read More