JSFiddle - React, Tailwind, and code Playground

HTML

<button onClick="dynamic_call('real_function','some text');">click me</button>

JavaScript

$.extend(true, window, {
    "MyPlugin": {
        "dynamicFunction": dummy_function
     }                
});

function dummy_function() {

}

function real_function(string) {
    alert(string);
}

function dynamic_call(function_name, text) {
    MyPlugin["dynamicFunction"] = eval(function_name);
    MyPlugin["dynamicFunction"](text);
}