Execute JS code from string input

Question

Is there any way to do the following?

var value = foo;
execute("value = 'bar'");
console.log(value) // returns 'bar'
function execute(jsCodeString) {
 // execute js code
}

• Teepeemm: The other question is, "Are you sure that you have to execute your code this way?". I think window["value"] = 'bar' would accomplish the same thing.
• Bergi: Why would you want to do that? Where is the string actually coming from (a literal doesn't make sense)?

Answer 1

You would want to use "eval" for this.

function execute(jsCodeString) {
 eval(jsCodeString)
}

See this: Execute JavaScript code stored as a string

• user3582590: This answer and Chris's answer were equally good, and I accepted this one at random. +1 for both answers as they are clear and link to documentation.

Answer 2

Use eval()

eval("value = 'bar'");

Anyway, I suggest you to read about the pros and cons of using eval() When is JavaScript's eval() not evil?