javascript - var card= cleanNum: function(){....} what does this cleanNum: mean? -

i want know cleannum means in following code. function name or represent else?

//code snippet 1 var creditcard = {   cleannum : function(number){     return number.replace(/[- ]/g,"");   } }; 

q1. not meaning of cleannum. can please explain significance of cleannum().

q2. if using in function called another_func(), how call code snippet 1?

is below code snippet same above?

//code snippet 2 function cleannum(number){   //sample code } 

first thing´s first: var x = {} defines new object, every variable declared within {} becomes field of object.

the following create object (referenced variable creditcard) field number

var creditcard = {   number: '3432-2342-34243' }; 

so q1, significance of cleannum, it's member of of object creditcard. instead of containing int/string/date etc, contains function

var creditcard = {   cleannum : function(number){     return number.replace(/[- ]/g,"");   } }; 

as q2, function same, scope not. when defined directly, it's accessible directly, if defined inside object, it's accessible through object:

creditcard.cleannum(somenumber); 

to go step further, demonstrate function function, define function outside of creditcard , reuse function inside object:

function cleannumglobal(number){     return number.replace(/[- ]/g,"");   }  var creditcard = {       cleannum : cleannumglobal };  //both call same function: console.log(cleannumglobal('2432-2423-234')); console.log(creditcard.cleannum('2432-2423-234')); 

as side note: function such this, use properties of object itself, instead of using parameter number, use property number of object (or clean number upon setting property). besides question scope ;)