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AngularJS: API: ng/service/$timeout


$timeout

  1. - service in module ng

Angular's wrapper for window.setTimeout. The fn function is wrapped into a try/catch block and delegates any exceptions to $exceptionHandler service.

The return value of registering a timeout function is a promise, which will be resolved when the timeout is reached and the timeout function is executed.

To cancel a timeout request, call $timeout.cancel(promise).

In tests you can use $timeout.flush() to synchronously flush the queue of deferred functions.

用法

$timeout(fn, [delay], [invokeApply]);

参数

参数 类型 详述
fn function()

A function, whose execution should be delayed.

delay
(可选)
number

Delay in milliseconds.

invokeApply
(可选)
boolean

If set to false skips model dirty checking, otherwise will invoke fn within the $apply block.

返回值

Promise

Promise that will be resolved when the timeout is reached. The value this promise will be resolved with is the return value of the fn function.

方法

  • cancel([promise]);

    Cancels a task associated with the promise. As a result of this, the promise will be resolved with a rejection.

    参数

    参数 类型 详述
    promise
    (可选)
    Promise

    Promise returned by the $timeout function.

    返回值

    boolean

    返回值true if the task hasn't executed yet and was successfully canceled.


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