如何将功能从Node.js服务器传递给客户端

Question

All:

What I want to do is like:

On Node server side:

var fn = function(){
    alert("hello");
}

I want to send this function to client side (currently using AngularJS, but it does not matter as long as this problem can be solved), and bind it to a button click event. So I can get pop-out alert window when click that button.

Thanks

Answer 1

So, something like this:

// Predefined functions
var allowedFunctions = {
    'f1': function () {alert('Called f1');},
    'f2': function () {alert('Called f2');},
    'f3': function () {alert('Called f3');},
};

// This comes from the server
var callThisOne = 'f2';

// Here's how you call it now
allowedFunctions[callThisOne]();

Answer 2

Here's a plunk .

// Get this from the server
var textReceived = 'var fn = function(){ alert("hello"); };';

function getFunction(textReceived) {
  eval(textReceived);
  return fn;
}

var f = getFunction(textReceived);

f();