js function with variables for re-use

Question

For js, I have following function:

function custom(){
 var rhcmm_append = function (data) {       
    var id    =  data.ids;
    var name  =  data.names;
    // and more variables and conditions etc
 };
 ...
}

I have few occasions in which I use the same variables and functions inside of function(data).

Is there a way to make these variables into a function that I can re-use?

For example:

 function VAR_FUNCTION(data){
    var rin_ids         =  data.thread_id.split(',');
    var rin_user        =  data.user_name;  
}

Thanks.

Can you explain more what you're looking for? Not sure I fully understand. — Matthew Herbst
– Matthew Herbst, Commented Feb 10, 2016 at 19:05
what exactly do you mean by re-use? you can simply assign new properties to an upper context variables from your VAR_FUNCTION — Eugene Hauptmann
– Eugene Hauptmann, Commented Feb 10, 2016 at 19:05
don't get it, what you are asking for. kind of default-values? — Thomas
– Thomas, Commented Feb 10, 2016 at 19:06

frogatto · Accepted Answer · 2016-02-10 19:28:50Z

1

I didn't get exactly what you are asking for, however, I guess you would need something like this:

function extractor(data){
    // further processing might be done here.
    // processing on 'data'
    return {
        id: data.id,
        name: data.name
    };
}

Then you can use this utility function where ever you need.

function custom(){
    var rhcmm_append = function (data) {       
        var pairs  =  extractor(data);

        // do stuff with 'pairs'
    };
...
}

Or

function VAR_FUNCTION(data){
    var pairs = extractor(data);
    // do stuff with 'pairs'
}

edited Feb 10, 2016 at 19:28

answered Feb 10, 2016 at 19:20

frogatto

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Comments

gyo · Accepted Answer · 2016-02-10 19:09:24Z

1

You can make these variables and functions global, limit their scope inside an anonymous function or use a global object that holds variables/functions, some examples:

// Global
var myVar = 'value';
function myFunction(){}



// Limit scope inside an anonymous function
(function(){
  var myVar = 'value';
  function myFunction(){}

  // To access variables/functions all your code needs to reside inside here
});



// Make a global object
var reusables = {
  myVar: 'value',
  myFunction: function(){}
};

// Example
reusables.myVar
reusables.myFunction();

answered Feb 10, 2016 at 19:09

gyo

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Comments

Binh LE · Accepted Answer · 2016-02-10 19:07:59Z

0

If you want to re-use, you can create the global variable.

answered Feb 10, 2016 at 19:07

Binh LE

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