Last Updated: February 25, 2016
·
2.139K
· Osvaldo Zonetti

JavaScript: Floor a number like a boss

#js
#math
#javascript

It's not semantic, but it's interesting.

var test = 2.6;

console.log(~~test); // 2
console.log(test | 0); // 2

OBS: It's not safe either. (Thanks @mlb)

~~9999999999.3; // 1410065407
#js
#math
#javascript

Written by Osvaldo Zonetti

Say Thanks
Respond

Related protips

Rounding a number to 2 decimal places only if there are decimal places

3.671K
0

How to get the correct Unix Timestamp from any Date in JavaScript

311.3K
2

Dynamically creating properties on objects using javascript

292K
0

5 Responses
Add your response

esskar

this awesome. must be a bug!?! :-)

over 1 year ago ·
Osvaldo Zonetti

For more information: http://michalbe.blogspot.co.uk/2013/03/javascript-less-known-parts-bitwise.html

over 1 year ago ·
mlb

Be careful with this, thought : 

~~9999999999.3
// 1410065407
over 1 year ago ·
Osvaldo Zonetti

@mlb Well observed.

Thanks for the warning.

over 1 year ago ·
barbagallo

Completely pointless but awesome.

over 1 year ago ·

Have a fresh tip? Share with Coderwall community!

Post
Post a tip
Best #Js Authors
andreaspizsa
311.3K
#js
#javascript
#bootstrap
abishekrsrikaanth
292K
#js
#PHP
#node.js
devers
211.2K
#js
#PHP
#Javascript
zinkkrysty
170.6K
#js
#Open Source
#CSS
iondrimba
161.4K
#js
#CI (Travis)
#jasmine
Related Tags
#js
#math
#javascript
Sponsored by
#native_company#
#native_desc#
#native_cta#
Filed Under
JavaScript tips that stick
Awesome Job
See All Jobs
Post a job for only $299
Did you know?

JavaScript on a page runs with the privileges of that origin. One altered library, tag manager, or snippet can read inputs, change what people see, and call your APIs as the user.

Security insights from Cside

Thanks to our sponsor
Sponsored by #native_company# — Learn More
#native_title# #native_desc#
#native_cta#