Significance of javascript function name in quotes in Angularjs

Question

I'm going through a javascript file having some functions like this:

'form_validation': function(form,error_bin){
        for(var field in form){
            if(field.substr(0,1) != "$"){
                this.validation_messages(field,form,error_bin);
            }
        }
    }

I want to understand what is the difference between defining a function with quotes (like mentioned above) and without quotes

EDIT: I've also observed that the functions having name in quotes are being called from a different file (like: ServiceName.functionName()), while without quotes are being called from the same file. This is an Angularjs code

Nick Bailey · Accepted Answer · 2015-05-03 03:21:40Z

5

The two are equivalent syntax for object literals. The quotes allow you to use keys that aren't legal variable names, like so:

    var foo ={ 'variable name':2}

There's nothing significant about the fact that the value assigned to the object key is a function. In JavaScript objects are (almost) just key value pairs of strings and arbitrary objects.

answered May 3, 2015 at 3:21

Nick Bailey

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Downgoat · Accepted Answer · 2015-05-03 03:34:00Z

1

JavaScript has something called Objects these are link associative array's in other languages. Object have item. Each item has a key(name) and a value. Key's follow regular JavaScript variable names. You can check valid variable names here. Valid variable names do not need to be in quotes. Sometimes, to include special characters, the name is a string.

my_value  <- Valid
my-value  <- Invalid (needs to be in string)
my value  <- Invalid (needs to be in string)

answered May 3, 2015 at 3:34

Downgoat

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Vikash Kesarwani · Accepted Answer · 2015-05-03 03:29:16Z

0

both are same for javascript objects. but you should avoid using quotes as a coding standard.

answered May 3, 2015 at 3:29

Vikash Kesarwani

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