In javascript, is it possible to add a string to a function name?

Question

I just wanted to ask if it is possible to take a string, which will always be constant and add a function's name to it. an example:

function modifyFunctionName(theFunc)
{
    var newFunc = "link" +theFunc;
    return newFunc;
}
//Somewhere in the HTML:
<input type='submit' value='button' onclick='modifyFunctionName(CheckLogin())'/>

So the modifyFunctionName will return linkCheckLogin().

EDIT: Sorry guys actually what I was exactly trying to do was this: https://gist.github.com/2371187

Looks like a good candidate for an XY Problem (mywiki.wooledge.org/XyProblem). What are you really trying to do? — 000
– 000, Commented Apr 13, 2012 at 15:50
It seems, that OP want's to assign a different event handler function to the button, depended on CheckLogin() return value. — Teemu
– Teemu, Commented Apr 13, 2012 at 16:06

qw3n · Accepted Answer · 2012-04-13 15:59:14Z

1

It technically is possibly, but you would have to use eval and that isn't a good idea. What you could do is create an object and just store references to functions and it would work about the same way.

var obj={};

function addFunction(name,func){
  obj[name]=func;
}

function changeName(oName,nName){
  obj[nName]=obj[oName];
  delete obj[oName];
}

addFunction('test',function(){return 'hi'});
obj.test();//returns 'hi'
changeName('test','greet');
obj.greet();//returns 'hi'

answered Apr 13, 2012 at 15:59

qw3n

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bebonham · Accepted Answer · 2012-04-13 15:53:28Z

0

<script>

    function one() {
        alert("one");
    }

    eval("function two() { one();}");
    two();

</script>

answered Apr 13, 2012 at 15:53

bebonham

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mpm · Accepted Answer · 2012-04-13 15:53:29Z

0

based on the question : it is not very clear what you intend to do , anyway , you can eval anything that is attached to a scope :

myFunction(aString){
// window is the scope , the context.
window[aString] = myFunction ;
}

the question is why would you want to do that ?

answered Apr 13, 2012 at 15:53

mpm

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