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JavaScript

Liam Maclachlan
Liam Maclachlan
22,805 Points
Posted by Liam Maclachlan
Liam Maclachlan
22,805 Points

How do you convert a string to a variable name?

Hi all,

I am playing around with a few things at the moment but on my 'to figure out' list, I can't find an answer to passing a variable from an input field, and then convert it to a format that will allow me to dynamically create a variable name.

I imagine interpolation will be needed to make this work, if it is possible.

Any ideas? Here is some pseudo code that may help clear things up

function String_to_class(variableName) {
       // code here to convert string?
      ConvertedName = formatConversion(variableName)

      // Use newly formatted string as variable name
      var ConvertedName = 'Here is some text'
}

1 Answer

Timothy Wright-Bodine
Timothy Wright-Bodine
9,670 Points
Timothy Wright-Bodine
Timothy Wright-Bodine
9,670 Points

If I'm understanding the question correctly, you could use eval() to do something like this:

eval("var " + prompt("give me a variable name to assign a value of 5 to") + "=5");

I might be missing the essence of what you're asking though. Apologies if so.

Liam Maclachlan
Liam Maclachlan
22,805 Points
Liam Maclachlan
Liam Maclachlan
22,805 Points

Hey man. I think that is pretty much what I am looking for. I'll try it in my code and get back to you :)

Liam Maclachlan
Liam Maclachlan
22,805 Points
Liam Maclachlan
Liam Maclachlan
22,805 Points

Hmm.. nope. This is my code that is not working. Any ideas? =/

    function createPerson(theVar, name, gender, age) {
        eval("var " + theVar + "= new Person()")
        eval( theVar + ".details('" + name + "','" + gender + "','" + age + "')")
    } 

    createPerson('Liam', 'Liam', 'Male', 26)

EDIT:

Don't worry. Got it :) 

    function newPerson(name, gender, age) {
        eval("var " + name + "= new Person()");
        eval(name + ".details(" + name + ", '" + gender +  "', " +  age + ")")
    }

Thanks man

Well... It worked last night. Still Best answer just don't know how I broke I 0_o