This API is available on Firefox OS for internal applications 仅。
remove()
方法在
DataStore
interface deletes one or more objects from the current data store.
注意 : The Data Store API is available in Web 工作者 , from Firefox 32 onwards (Firefox OS 2.0; see bug 949325 )。
store.remove(1).then(function(success) {
// Do something with success, which is a boolean communicating
// the result of whether the deletion was successful or not
});
A
Promise
object of type
布尔
that resolves with a boolean communicating the result of whether the deletion was successful or not.
id
remove()
can be passed one or more ids of specific records that you want to delete from the data store. When you want to delete multiple ids, you pass them in as multiple parameters, rather than an array or object, e.g.
remove(1,2,3)
.
revisionId
revisionId
(
DOMString
). This can be used to prevent conflicts. If the
revisionId
is not the current
revisionId
for the current Data Store, the operation is aborted. This means that the developer has a 'old'
revisionId
and will have to manage the conflict somehow.
The following example gets all the data stores on the device called "contacts", then removes the first three records stored in the first "contacts" data store:
navigator.getDataStores('contacts').then(function(stores) {
stores[0].remove(1,2,3).then(function(success) {
if(success) {
console.log('Records successfully removed.');
};
});
});
| 规范 | 状态 | 注释 |
|---|---|---|
|
Data Store API
The definition of 'remove()' in that specification. |
草案 |
The discussion concerning this API's creation happened in various Mozilla mailing lists and other places. A summary of the discussion and further pointers can be found on the Mozilla Wiki . For further feedback and questions, send mail to the dev-webapi mailing list.