Using Javascript's Hash-Table's value to call a function

Question

I basically want to below code to work, is there a way ?

var hash_table = new Object();
hash_table['a'] = foo;
alert(hash_table['a'](1)); // 1 is just a simple parameter for example.
                           // this line should print "2" in alert();.


function foo(params) {
    alert("params: " + params); // just simple print in alert(); (will print 1)
    return 2;
}

What's wrong with your code? I have the expected behaviour: two alerts, the first with "params: 1" and the second with "2". — MPavesi
– MPavesi, Commented Sep 20, 2013 at 6:21

Shiplu Mokaddim · Accepted Answer · 2013-09-20 05:40:43Z

1

You are defining foo after using it. Make sure you define foo first then use it.

So,

function foo(params) {
    ...
}

Should come before

hash_table['a'] = foo;

answered Sep 20, 2013 at 5:40

Shiplu Mokaddim

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1 Comment

MPavesi Over a year ago

The Miko Diko code should be working as well, because the function declaration is hoisted to the top of the scope.

Dan D. · Accepted Answer · 2013-09-20 05:40:01Z

0

There is nothing wrong with that code. The code does what you describe it should do.

answered Sep 20, 2013 at 5:40

Dan D.

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