Calculate the time it takes to read a given amount of words. The output is formatted like this mm:ss. A reading speed of 180 words per minute (wpm) is assumed, though this can be changed.
Inspired by: https://github.com/RadLikeWhoa/helpers.js/blob/master/Functions/readingtime.js
| function ( | |
| a, // a string | |
| b, // words per minute | |
| c, // minutes-placeholer | |
| d // seconds-placeholder | |
| ) { | |
| a = a.split(' ').length; // split each word | |
| b = b || 180; // re-assign the wpm-rate | |
| c = a / b | 0; // calculate the estimated seconds | |
| d = a % b / (b / 60) | 0; // calculate the estimated seconds | |
| return (c < 10 ? '0' + c : c) + ':' + (d < 10 ? '0' + d : d); // pad min and sec and output as mm:ss | |
| } |
| function(a,b,c,d){a=a.split(' ').length;b=b||180;c=a/b|0;d=a%b/(b/60)|0;return(c<10?'0'+c:c)+':'+(d<10?'0'+d:d)} |
| DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE | |
| Version 2, December 2004 | |
| Copyright (C) 2013 Yannick Albert <http://yckart.com> | |
| Everyone is permitted to copy and distribute verbatim or modified | |
| copies of this license document, and changing it is allowed as long | |
| as the name is changed. | |
| DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE | |
| TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION | |
| 0. You just DO WHAT THE FUCK YOU WANT TO. |
| { | |
| "name": "readingTime", | |
| "description": "Calculate the time it takes to read a given amount of words.", | |
| "keywords": [ | |
| "time", | |
| "string", | |
| "words", | |
| "text", | |
| "read" | |
| ] | |
| } |
| <!DOCTYPE html> | |
| <title>Foo</title> | |
| <div>Expected value: <b>00:03</b></div> | |
| <div>Actual value: <b id="ret"></b></div> | |
| <script> | |
| var readingTime = function(a,b,c,d){a=a.split(' ').length;b=b||180;c=a/b|0;d=a%b/(b/60)|0;return(c<10?'0'+c:c)+':'+(d<10?'0'+d:d)}; | |
| document.getElementById('ret').innerHTML = readingTime('140byt.es is a tweet-sized, fork-to-play, community-curated collection of JavaScript'); | |
| </script> |
@atk Cool, did not know that! Merged it...
MDN has a helpful table of JS operator precedence: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Operator_Precedence
Save another 2 bytes by putting the string concatenation inside the query:
function(a,b,c,d){a=a.split(' ').length;b=b||180;c=a/b|0;d=a%b/(b/60)|0;return(c<10?'0'+c:c)+':'+(d<10?'0'+d:d)}
@atk Good point!
To separate the float part, you can use %1, then reuse b and save another 5 bytes:
function(a,b,c){a=a.split(' ').length;c=a/(b||180);b=c%1*60|0;c|=0;return(c<10?'0'+c:c)+':'+(b<10?'0'+b:b)}
~ has higher precedence than /, but the precedence of | (bitwise or) is lower, so you can save some bytes by using |0 instead of ~~():