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add params tip #242

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Feb 27, 2016
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add params tip #242

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2 changes: 2 additions & 0 deletions src/guide/custom-directive.md
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Expand Up @@ -213,6 +213,8 @@ Vue.directive('example', {
})
```

<p class="tip">Note you need to use their camel-case at `paramWatchers`, when using kebab-case attributes. For example, if you have defined the attribute like `disable-effect`, you need to set `disableEffect` to `paramsWatchers`.</p>

### deep

If your custom directive is expected to be used on an Object, and it needs to trigger `update` when a nested property inside the object changes, you need to pass in `deep: true` in your directive definition.
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