Ext.Number.toFixed is not stable

[sarimarton]

Repro is at https://fiddle.sencha.com/#fiddle/14m0

Ext version tested:

• Ext 6.0.1

Browser versions tested against:

• Chrome Version 47.0.2526.111 m

Description:

• Ext.Number.toFixed wrongly relies on Chrome's native Number.prototype.toFixed, because Chrome's toFixed is buggy with (0.145).toFixed(2).

Steps to reproduce the problem:

• Evaluate Ext.Number.toFixed(0.145, 2) in Chrome

The result that was expected:

• "0.15"

The result that occurs instead:

• "0.14"

[sarimarton]

Perhaps the issue is related to the fact that as per standard (though weird), 0.145 * 100 results in 14.499999999999998 (in every browser). Though IE handles (0.145).toFixed(2) correctly, resulting "0.15".

[sarimarton]

A next layer of rounding seems to me solving the problem (in Ext.Number.toFixed):

(Math.round(Math.round(value * pow * 10) / 10) / pow).toFixed(precision)

[Gary Schlosberg]

Thanks for the report. We have an existing ticket for this issue (EXTJS-11494).