mirror of https://github.com/status-im/consul.git
32 lines
1.0 KiB
Plaintext
32 lines
1.0 KiB
Plaintext
# did-upsert
|
|
|
|
Modifier that is called when a DOM node is inserted and/or an argument is
|
|
updated.
|
|
|
|
Additionally the callback function provided should expect an event shaped
|
|
object rather than a reference to a DOM node itself, therefore the DOM node
|
|
can be obtained by referencing `target` or `currentTarget` instead. This means
|
|
that you can use the same callback function for both `{{on 'click'}}`
|
|
modifiers and `{{did-upsert}}` modifiers. The one dowbside is that the
|
|
signature of functions used for `did-upsert` are slightly different than when
|
|
you use `did-insert/did-update`, but moving forwards we are more likely to
|
|
make `did-insert/did-update` use a more standard based signature (or some
|
|
other approach to make things consistent)
|
|
|
|
```hbs
|
|
<div
|
|
{{did-upsert this.callback @arrayThatMightGetAddedToTODetectAnUpdate.length}}
|
|
>
|
|
</div>
|
|
```
|
|
|
|
```javascript
|
|
callback(e) {
|
|
console.log(e.currentTarget);
|
|
console.log(e.target);
|
|
}
|
|
```
|
|
|
|
Other than the above exception, the modifer works the same as the
|
|
`did-insert/did-update` modifiers.
|