This time I will show you how to confirm that ng-repeat rendering is completed, and what are the precautions for confirming that ng-repeat rendering is completed. The following is a practical case, let's take a look.
A certain project, there is a list element in my web page, the style is as follows:
##In fact it It is formed through ng-
repeat of Angular
. The code in html
is: <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"><li ng-repeat="for list in lists()" id="{{ list.id }}">{{ list.name }}</li></pre><div class="contentsignin">Copy after login</div></div>
New list at the bottom of the picture
, after clicking it, a new list
object will be push
into the lists
array. At this time, the page will be automatically rendered, and a # will be added accordingly. ##<li>, as follows:
Note that MyList1
is always in theactive state (
class="active"), my requirement is to set the new
list to
active## after adding list #, that is, after adding it, it will become the following style:
At first I tried to go to ## in the function corresponding to
#listsAfter
push a new list
object in the array, use document
.getElementById
to get the new <li>
object, and then add a class="active"<a href="http://www.php.cn/code/658.html" target="_blank"> to it. It turns out that the obtained </a>DOM
object is null
. After Search
found that the reason is: after pushing the push
object to the lists
array, the array changes, and all <li> will be re-rendered. After push
is completed, immediately look for the newly added DOM
object. DOM
has not been rendered yet, so it cannot be obtained. The solution is: use the AngularJS
instruction to monitor whether the
ng-repeat
is completed, and after the rendering is completed, get the newly added < li><a href="http://www.php.cn/angularjs/angularjs-examples.html" target="_blank">Object, there is a lot of related content on this Internet, the code is as follows: </a><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">myapp.directive('repeatFinish', function ($timeout) {
return {
restrict: "C",
link: function (scope, element, attr) {
if(scope.$last === true){
$timeout(function () {
scope.change_list(element[0]);
}, 10);
}
}
}
});</pre><div class="contentsignin">Copy after login</div></div>
The above code creates a command named repeatFinish
, restrict: "C "
means that the instruction is placed in
of DOM
(camel case, i.e. class="repeat-finish"
), scope.$ last === true
means that the last object has been rendered, and the change_list
function is executed at this time (defined in the controller
, the function is to change the current active
object cancels active
, and then sets the incoming DOM object to active
), element[0]
can directly get the current The rendered DOM
element. Note that I used $timeout
, and change_list
was executed after 10ms
. I found that using change_list
directly would still not find the DOM.
, the reason is unknown, I look forward to the answer from the master. I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!
Recommended reading:
Do not use vue Summary of code specification detection methods
The above is the detailed content of How to confirm that ng-repeat rendering is completed. For more information, please follow other related articles on the PHP Chinese website!