Question

I know eval and with are usually discouraged, but putting that aside for the moment, I’m having trouble getting this code to work:

with({ a: 'hello world' }){
    var output = eval('{ text: a }')
}

I was expecting output to be the object:

{ text: "hello world" }

but instead output is the string ‘hello world’

Can someone help me see what I’m missing?

Answer 1

You need parentheses around it:

 var output = eval('({ text: a })')

see e.g. Why does JavaScript's eval need parentheses to eval JSON data?