Javascript display object property or variable as a string

Question

I want to know if it's possible to do something like this:

var myObject = { first: "Hello" + otherObject.second() + someVariable; }

Then call it and display in html: html += myObject.first() or myObject.first

I want it to display all values of "someVariable" and "otherObject.second()". Currently it display something like:

function () { return 2 * 2 }

but I want it to display "4" as a string/number so the result would be something like "Hello4". I hope you understand my question :) If thats not possible or it's a bad idea overall to do that, then let me know too and I will figure out something else.

I'm not sure I understand you're question but have you tried using the eval function? — user2417483
– user2417483, Commented May 9, 2015 at 13:42
Hey, no I did not try eval function, but i read about it before in lots of comments, and most peoples say that it should not be used. I tested it now and it seems to be what I am looking for. — Mariusz
– Mariusz, Commented May 9, 2015 at 13:53

Yeldar Kurmangaliyev · Accepted Answer · 2015-09-21 04:07:53Z

1

Other people are right - you shouldn't use eval function. Especially, if it is possible to solve the problem without it.

In your case, you can replace this variable with a function, and call it when needed:

var myObject = {
    first: function() {
        return "Hello" + otherObject.second() + someVariable;
    }
}

Now, you can call it as a function:

alert(myObject.first());
// or
html += myObject.first();

otherObject.second() and someVariable will be calculated on function call.

answered Sep 21, 2015 at 4:07

Yeldar Kurmangaliyev

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1 Comment

Mariusz Over a year ago

Hey, this is quite an old post, but your answer is correct so let me accept it :)

Ярослав Рахматуллин · Accepted Answer · 2015-09-21 03:43:10Z

0

You can use:

console.log("foobar", myfn());

answered Sep 21, 2015 at 3:43

Ярослав Рахматуллин

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