angularjs - Angular 1.4.0 $timeout is not happening after ng-show has taken effect with ngAnimate -


i upgraded angular 1.4.0 , having timing issues ng-show , $timeout , i’m not sure best way solve is.

i created plunkr demonstrates situation: http://plnkr.co/edit/griup3mh6kzazcrfhcey?p=preview

app.controller('mainctrl', function($scope, $timeout) {     $scope.output = '';     $scope.toggle = false;      var outputstuff = function() {         $timeout(function() {             document.getelementbyid("output").innerhtml += "<strong>-----first div shown:" + $scope.toggle + ", second div shown:" + !$scope.toggle + "--------------</strong><br>";             var firstdivclass = angular.element(document.getelementbyid("firstdiv")).attr("class");             var seconddivclass = angular.element(document.getelementbyid("seconddiv")).attr("class");             var firstdivoffsetwidth = document.getelementbyid("firstdiv").offsetwidth;             var seconddivoffsetwidth = document.getelementbyid("seconddiv").offsetwidth;             document.getelementbyid("output").innerhtml += "first div class:" + firstdivclass + "<br>";             document.getelementbyid("output").innerhtml += "second div class:" + seconddivclass + "<br>";             document.getelementbyid("output").innerhtml += "first div width:" + firstdivoffsetwidth + "<br>";             document.getelementbyid("output").innerhtml += "second div width:" + seconddivoffsetwidth + "<br>";             if ($scope.toggle && firstdivoffsetwidth === 0) {                 document.getelementbyid("output").innerhtml += "<span style='color:red'>unexpected!!</span><br>";             }             if (!$scope.toggle && seconddivoffsetwidth === 0) {                 document.getelementbyid("output").innerhtml += "<span style='color:red'>unexpected!!</span><br>";             }          });     };      $scope.togglevariable = function() {         $scope.toggle = !$scope.toggle;         outputstuff();     };  });

basically, when click something, changing scope variable ng-show depends on. when element shown, trying element width. however, i’m observing inconsistent. element showing hasn’t been shown yet. therefore width 0.

if remove nganimate module app, works expected; element set ng-show=“true”, in fact shown , has width.

this used work fine in angular 1.3.14 , seems work way 1.4.0-rc.2

in plunkr, can click on "click me" button bunch of times , see red "unexpected!!" text show up. when element supposed shown isn't , has width of 0.

you can remove 'nganimate' module , see red text never appears. can leave 'nganimate' in , change angular version in index.html code.angularjs.org/1.4.0-rc.2/angular.js , code.angularjs.org/1.4.0-rc.2/angular-animate.js , see red text not appear. used google chrome test this.

why timing inconsistent , if $timeout not right way wait element rendered, correct way it?

i can't reproduce error demo. however, came across similar once before. iirc, $timeout used use angular's $evalasync queue, may not guaranteed run after next redraw. this changed recently. try using $window.settimeout instead.


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