8000 Null property · Issue #8610 · vuejs/vue · GitHub
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sougiovn opened this issue Aug 6, 2018 · 2 comments
Closed

Null property #8610

sougiovn opened this issue Aug 6, 2018 · 2 comments

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@sougiovn
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sougiovn commented Aug 6, 2018

What problem does this feature solve?

I think it'd be nice to have a feature like this from Angular: https://angular.io/guide/template-syntax#the-safe-navigation-operator----and-null-property-paths

It'd prevent errors like:
Cannot read property 'toUpperCase' of null"

When doing something like:
{{ myObj.myNameStartsBeingNull.toUpperCase() }}

What does the proposed API look like?

{{ myObj.myNameStartsBeingNull?.toUpperCase() }}

If myNameStartsBeingNull is null, then stops to interpret the expression
@sqal
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sqal commented Aug 6, 2018

#4638

Also, did you try babel's plugin? -> https://github.com/babel/babel/tree/master/packages/babel-plugin-proposal-optional-chaining

@yyx990803
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We do not intend to introduce non-standard JS syntax in Vue template expressions.

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@yyx990803 @sqal @sougiovn
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