If you need to call a string function with arguments, do this: window[stringFunctionName].apply( window, arrayOfArguments ) You can use scope in place of window if preferred

Jan 9, 2024 · Then we use eval() method to execute the function by constructing a string of code that calls the function by name, passing in the argument “Alice”. This results in the greet function being executed, and the output “Hello, Alice!” being logged to the console.

Once we have a reference to a function inside a variable, we can call this function by "calling the variable", i.e. fn(t.parentNode.id), which equals clickedOnItem(t.parentNode.id), which was what the OP wanted. More full example: /* [..] Other settings */ functionName: 'clickedOnItem' /* , …

Mar 24, 2012 · Can I dynamically call an object method having the method name as a string? I would imagine it like this: var FooClass = function() { this.smile = function() {}; } var method = "smile"; var f...

Dec 26, 2022 · In this article, we will call a function from the string stored in a variable. There are two methods to call a function from a string stored in a variable. Using window object method; Using eval() method; Note: The eval() method is older and is deprecated.

Sep 8, 2023 · In this Byte, we've showed a few different methods of executing a JavaScript function when you have its name as a string. We've seen how to use the window object, the Function constructor, and even how to execute functions within namespaces.

Jun 29, 2017 · In this article we are going to show you how to retrieve a function into a variable from its string name or to execute it directly in JavaScript. 1. getFunctionByName. In order to execute a JavaScript function in the browser from its name, we recommend you to use the following function getFunctionByName:

Calling a function from a string, stored in a variable can be done in two different ways. The first approach makes use of the window object method, and the second method makes use of the eval () function. This tutorial will guide you to learn the way to execute a JavaScript function using its name as a string.

Nov 8, 2021 · The eval() function evaluates JavaScript code represents as a string. That string can be a JavaScript expression, a statement, or a sequence of statements. The expression can include variables and properties of existing objects. In the code below, we concatenate the string value of the function name with the arguments in parentheses as a single ...

Oct 31, 2013 · You can use the Function constructor to call a function with a string by passing the string to the constructor. Here’s an example: var sum = new Function('a', 'b', 'return a + b');