angularjs1 froalaEditor angular-froala 提示错误

Question

element.froalaEditor is not a function

代码
<textarea froala="froalaOptions" ng-model="myHtml"></textarea>
function myCtrl($scope){

$scope.myHtml = "<h1>Hello World</h1>"

$scope.froalaOptions = {

    toolbarButtons : ["bold", "italic", "underline", "|", "align", "formatOL", "formatUL"]

}