JSFiddle - React, Tailwind, and code Playground

JavaScript

function StrCall(functionString) {
    var func = window;
    var ccallArray = functionString.split('.');
    for (var i = 0; i < ccallArray.length; i++) {
        func = func[ccallArray[i]];
    }
    return func;
}
window.search = {
    clear: {
        Multi: {
            Select: function () {
                alert('wscMS');
            }
        }
    }
}
var ccall = "search.clear.Multi.Select";
StrCall(ccall)();