Ng-Options Expression Repeatedly Called
I am having multiple issues with my element in angular and am trying to understand what is going on. My first step is to understand why the multiple
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To avoid triggering your loops in every digest loop you can use one time binding
::value.<select ng-options="theorderdate as theorderdate for theorderdate in ::getOtherOrderDates(Bread.text)" ng-model="randomDateRomantic.randomDateRomantic" ng-change="soRomantic(Bread.text)"></select>Thanks to that expression inside
ng-optionswill be evaluated only once and the watcher will be removed after first evaluation which will stop your function being triggered in next digest loop iterations.DOCS
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The
getOtherOrderDateswill be called in each digest cycle so that angular knows whether to updateoptions inselect. That's most likely the reason you're seeing this method being called many times.If you're worried about performance impact of this loop you can build the options upfront inside your
controllerstore it in$scopelike so:$scope.options = $scope.getOtherOrderDates($scope.Bread.text);whenever
$scope.Bread.textchanges and then use$scope.optionsinside your template.讨论(0)
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