Secondly, $timeout 是对 window.setTimeout is a one-layer package with basically the same functions and interfaces. The main differences are as follows:
The incoming function is packaged in try...catch 结构内，并且把抛出的异常委托给 $exceptionHandler for unified scheduling processing;
$timeout 返回的不是数字 ID，而是一个 promise 对象。这意味着你无法用 window.clearTimeout 取消它，而是要用 $timeout.cancel(returnedPromise) to cancel;
The third parameter passed in is a Boolean value. If false is passed in, $apply will not be used to wrap the false，则不会使用 $apply 来包装 function 调用，也就是说不会更新当前作用域内的数据绑定。默认是 truefunction
call, which means it will not Update data bindings within the current scope. The default is true.
Finally, these things are actually in the document...🎜
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
First of all, there is no
$setTimeout，是$timeout.Secondly,
$timeout是对window.setTimeoutis a one-layer package with basically the same functions and interfaces. The main differences are as follows:try...catch结构内，并且把抛出的异常委托给$exceptionHandlerfor unified scheduling processing;$timeout返回的不是数字 ID，而是一个 promise 对象。这意味着你无法用window.clearTimeout取消它，而是要用$timeout.cancel(returnedPromise)to cancel;falseis passed in,$applywill not be used to wrap thefalse，则不会使用$apply来包装 function 调用，也就是说不会更新当前作用域内的数据绑定。默认是truefunctiontrue.
Finally, these things are actually in the document...🎜