Can a function be returned using AJAX?

Question

Can a function be returned using AJAX?

Suppose I am in need of initiating an ajax call to my server

$.ajax({
    type: 'POST', 
    url: 'url/url', 
    success: function(response){}
});

and upon receiving a response from the server, I send some JavaScript code

res.send("const myFunc = (b) => { console.log(b) }");

Is there a way to achieve something similar to this?:

$.ajax({
    type: 'POST', 
    url: 'url/url', 
    success: function(response){ 
        response('hello'); //I want 'hello' to be displayed in the console
    }
});

javascript ajax

Answer 1

Answer №1

Example showcasing the Function() constructor:

$.ajax({
    type: 'POST', 
    url: 'url/url', 
    success: function(response){
        const fn = new Function('x', `${response}; myFunc(x)`)
        fn('hello')
    }
});

It is important to note that the functions need to be run inside a string like ${response}; myFunc(x)

Here is an example to demonstrate how this operates:

const code = 'const myFunc = (b) => { console.log(b) }'
const fn = new Function('x', `${code}; myFunc(x)`)
fn('Hello')

It might be more convenient if you were to send an array in this manner:

res.send("b", "console.log(b)");

Then, you could use it like so:

$.ajax({
    type: 'POST', 
    url: 'url/url', 
    success: function(response){
        const fn = new Function(...response)
        fn('hello')
    }
});

Answer 2

Example showcasing the Function() constructor:

$.ajax({
    type: 'POST', 
    url: 'url/url', 
    success: function(response){
        const fn = new Function('x', `${response}; myFunc(x)`)
        fn('hello')
    }
});

It is important to note that the functions need to be run inside a string like ${response}; myFunc(x)

Here is an example to demonstrate how this operates:

const code = 'const myFunc = (b) => { console.log(b) }'
const fn = new Function('x', `${code}; myFunc(x)`)
fn('Hello')

It might be more convenient if you were to send an array in this manner:

res.send("b", "console.log(b)");

Then, you could use it like so:

$.ajax({
    type: 'POST', 
    url: 'url/url', 
    success: function(response){
        const fn = new Function(...response)
        fn('hello')
    }
});

Can a function be returned using AJAX?

Answer №1

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