Recent questions tagged Polymer

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polymer - Failed to construct 'HTMLElement'

I run my-widget.js through babel (es2015 preset) to produce my-widget-es5.js. This causes an error with ... .define(MyWidget.is, MyWidget); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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polymer - How can I know that Template Repeat has finished?

Element needs some time for template-repeat to render all content, so paper-spinner is used to notify the ... -for-change-in-content-properties See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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polymer - How to use commas in a CSS variable fallback?

How can one use commas in the fallback value of a CSS variable? E.g. this is fine: var(--color, #f00), ... var(--font-body-family, sans-serif) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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polymer - Uncaught DOMException: Failed to execute 'define' on 'CustomElementRegistry': this name has already been used with this registry

Uncaught DOMException: Failed to execute 'define' on 'CustomElementRegistry': this name has already been used with ... did not work. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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385 views

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polymer - How are Shadow DOM events from under <content> targeted?

I'm trying to understand what events that originate in light DOM look like when received in shadow DOM via ... than understand the behavior. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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307 views

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polymer - Binding imperatively

Is there a way to set up bindings imperatively. An example use case: var el2 = new MyElement(); ... .$.anotherElement.anotherProp) Possible? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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477 views

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polymer - Registering a custom element from a chrome extension

I have tried registering custom elements through native javascript and polymer from within a chrome extension with ... . Any suggestions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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465 views

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polymer - Do Custom Elements require a dash in their name?

Is it possible to name your own custom elements <date>, <person>, <city> or others without the use of ... Can use define elements without them? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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