Inline :style with value 0 ignored

[jeroennoten]

Vue.js version

2.0.0-rc.8

Reproduction Link

https://jsfiddle.net/Lcp6zekn/

Steps to reproduce

Add a style attribute with value 0, e.g. <div :style="{opacity: 0}"></div> or <div :style="{padding: 0}"></div>.

What is Expected?

The value is respected.

What is actually happening?

The value is ignored.

[apulley]

Works in 1.x, which is interesting. https://jsfiddle.net/2mnyqnnt/

In 2.0, I've found that I've had to turn Falsy values into strings or Vue will not apply the attribute. (is this expected in 2.0?) In this case, it's not applying the style attribute for opacity:0.

Similar issues here with an aria attribute that has a boolean value e.g. aria-invalid="boolean"

Input element with falsy value for aria-invalid.
https://jsfiddle.net/staircasebug/9pef2eau/