angular/aio/content/errors/NG8002.md
Joe Martin (Crowdstaffing) 42289f25c6 docs: improve markdown (#45325)
The purpose of the changes is to clean all markdown to match a single pedantic style.

*   To ensure all changes in style are properly separated.
*   To ensure all styled content aligns to nearest 4-character-tab.
*   To ensure all code blocks use the Angular `<code-example>` or `<code-tab>` elements.
*   To ensure all markdown exists outside of html tags.
*   To ensure all images use the Angular style for `<img>` elements.
*   To ensure that all smart punctuation is replaced or removed.

    ```text
    ’, ’, “, ”, –, —, …
    ```

*   To ensure all content does not conflict with the following reserved characters.

    ```text
    @, $, *, &, #, |, <, >,
    ```

*   To ensure all content displays using html entities.

The following changes were made to files in the following directory.

```text
aio/content
```

The target files were markdown files.
The list of excluded files:

```text
.browserslistrc, .css, .conf, .editorconfig, .gitignore, .html, .js, .json, .sh, .svg, .ts, .txt, .xlf,
```

PR Close #45325
2022-04-08 19:36:30 +00:00

868 B

@name Invalid Attribute @category compiler @videoUrl https://www.youtube.com/embed/wfLkB3RsSJM @shortDescription Unknown attribute or input

@description An attribute or property cannot be resolved during compilation.

This error arises when attempting to bind to a property that does not exist. Any property binding must correspond to either:

  • A native property on the HTML element, or
  • An @Input() property of a component or directive applied to the element.

The runtime error for this is NG0304: '${tagName}' is not a known element: &hellip;'.

@debugging Look at documentation for the specific binding syntax used. This is usually a typo or incorrect import. There may also be a missing direction with property selector 'name' or missing input.

@reviewed 2022-02-28