function someFunc() { return 'Hello, world'; }
function call(funcName) { eval(funcName + '()'); }

console.log(call('someFunc'));

But console.log doesn't print 'Hello world'. How can I return value after eval function?

function someFunc() { return 'Hello, world'; }
function call(funcName) { eval(funcName + '()'); }

console.log(call('someFunc'));

But console.log doesn't print 'Hello world'. How can I return value after eval function?

• javascript
• function
• eval
• return

3 Answers 3

You want:

call(funcName) { window[funcName](); }

And don't use the void keyword. It ignores return values and always returns undefined from a statement.

To answer your question using eval :

function someFunc() { return 'Hello, world'; }

function call(funcName) { return eval(funcName + '()'); }

console.log(call('someFunc'));

And you can use eval if you trust the input. this is the rule of thumb

Don't use eval -- it's evil. Why don't you try this:

Get JavaScript function-object from its name as a string?

After getting a reference to the function, you can simply call it and use the return value directly.