What does the flt() function do?

EugeneP · February 15, 2021, 12:49pm

Hello all

Please help me understand what flt() does. Any link to documentation?

Thanks so much

smino · February 15, 2021, 4:00pm

Hi,

I may help to say where you have encountered it. The context or code in which it is found may lead someone to be able to help.

EugeneP · February 15, 2021, 4:08pm

Oh sure…

In client-side JS custom code. I suspect it converts field-types such as Currency and Percent to floats but would appreciate confirmation.

console.log(flt) returns function flt$1(e, t, n), but I’m not enough of a developer to investigate any further What are the e t and n?

kennethsequeira · February 15, 2021, 4:19pm

github.com

frappe/frappe/blob/c9de5bc4681e5a7723aa22401b40a1aa2f987aa2/frappe/public/js/frappe/utils/number_format.js#L8


      
          // Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
          // MIT License. See license.txt
          
          
import './datatype';
          
          
if (!window.frappe) window.frappe = {};
          
          
function flt(v, decimals, number_format) {
          	if (v == null || v == '') return 0;
          
          
	if (typeof v !== "number") {
          		v = v + "";
          
          
		// strip currency symbol if exists
          		if (v.indexOf(" ") != -1) {
          			// using slice(1).join(" ") because space could also be a group separator
          			var parts = v.split(" ");
          			v = isNaN(parseFloat(parts[0])) ? parts.slice(parts.length - 1).join(" ") : v;

Usage:


flt(19084.128940,2)
19084.13

flt(19084.1289467,8)
19084.1289467

So it’s formatting the value given to a number format and decimal at the client side.

EugeneP · February 15, 2021, 4:27pm

Thanks so much @kennethsequeira

In general, how do I find the definition of a function on github? Let’s say I’m looking for flt?

kennethsequeira · February 15, 2021, 4:46pm

If I’m using Github I’ll use the option to check the definition:

You’ll get the option to find in the same repo.

If you have the code locally, the search options in a code editor like VS Code or Atom are quite powerful in helping you find the definitions.