jade printf-like number formatting

Question

How can I control the formatting of numbers in Jade template?

Sample code:

  for item in issue.item
   tr
    td.utilityValue #{item.$.value}
    td.utilityUtil #{item.$.evaluation * utilitySpace.weightmultiplyer}

I want the numbers to print with 2 significant digits.

Answer 1

Here is the solution I found; it works for Express 3:

1. Install sprintf by issuing:

   npm install sprintf
   

2. In app.js:

   app.locals.sprintf = require('sprintf').sprintf;
   
   app.locals.format = "%+1.0f";
   

3. In template.jade:

   ...... td.utility #{sprintf(format, value)} ......