How Can I Dynamically Set JavaScript Variable Names Using a String?

Convert a String to a Variable Name in JavaScript

Question:

While working on a JavaScript project, you stumbled upon a challenge: setting a variable inside a function using a string passed as an argument. You have explored various solutions but haven't found a satisfactory one. Consider the following code example:

const onlyVideo = true;

function setVariable(variableName) {
  // Set onlyVideo to the value of variableName dynamically
}

How can you accomplish this task in a flexible manner without relying on hardcoded if statements?

Answer:

One effective approach to achieve this is by utilizing the global object in JavaScript, 'window'. Here's how you can implement it:

const onlyVideo = true;

function setVariable(variableName) {
  window[variableName] = onlyVideo;
}

This code snippet assigns the value of onlyVideo to the variable specified by variableName within the global namespace. For instance, if variableName is "myVariable", the code would create a global variable named myVariable with a value of true.

This method provides a dynamic and flexible way to set variables based on a string input, allowing you to work with a variety of variables without hardcoding specific scenarios.

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