JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-controller="myCtrl">
<button id="testBtn" onclick="onClick(this)">test</button>
</div>

JavaScript

angular.module("app",[])
.controller("myCtrl",function($scope){
    $scope.angularWorldFunction = function(){
        console.log("message from angular world");
    }
});

function onClick(target){
    angular.element(target).scope().angularWorldFunction();
}