Long decimals from slider value when steps are .1

[nateclicks]

Bug, feature request, or proposal:

Bug

What is the expected behavior?

The value displayed in the from to be only 1 decimal when using 1 decimal steps

What is the current behavior?

Sometimes it is one decimal, sometimes it is many more.

This can also be observed in the Material Angular documentation

What are the steps to reproduce?

1. Create a slider
2. Create a text box
3. Set the slider steps to .1
4. Bind the value of the slider to the textbox
5. Slide the slider around
6. Observe intermittent issues with long decimals

Editor URL: https://stackblitz.com/edit/angular-material2-example
App URL: https://angular-material2-example.stackblitz.io

What is the use-case or motivation for changing an existing behavior?

The existing behavior seems incorrect.

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Angular 5.2.8
Material 5.2.5

Is there anything else we should know?

It looks there have been attempts to address this in other areas like the thumb label. Not sure if it has come back or just never got fully addressed or if there is just something I am doing wrong.
Previous issue: #2511 , #2527

[H3llK33p3r]

Hi with the new angular/material stack the issue is fixed for mouse event but not keybord. Try with the previous example with new angular stack : https://stackblitz.com/edit/angular-material6-example?file=app/app.component.html

Use keyboard arrow you will see the same kind of problem.

[crisbeto]

Thanks for the heads-up @H3llK33p3r, I've submitted #11574 to sort it out.

[alexciurea]

hassio 0.73.0 - this is still a problem, even using the mouse.

my 2 input_numbers are defined in input_number.yaml

the High slider has this bug - the values ending with .2 .4 and .7 .8 get values like
1.2000000000000002, etc...

#high comfort for climate control

comfortctrl_high:
  name: Comfort High
  initial: 1.5
  min: 1.1
  max: 1.8
  step: 0.1

the Low slider behaves correctly.

#Low comfort for climate control
comfortctrl_low:
  name: Comfort Low
  initial: 0.9
  min: 0
  max: 1
  step: 0.1

[alexciurea]

sorry - by mistake i missed to see this is angular and not [directly] relevant to home assistant/hassio issue tracker.

for now, please ignore my reporting that this is still an issue.
I'm not even sure what angular version used by home assistant (and in fact, not even certain the 2 issues / projects are related - although the behavior is clearly similar).
thanks
-a

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