CODEWITHSUNDEEP
javascriptarraysoverloading
Zbarcea Christian
Zbarcea Christian

Reputation: 9548

Javascript pass array to another function

Since overloading a function is not allowed, I am trying to find a way to pass values to a function.

In php I resolve in the following way:

// value2 and value3 are optional
function myMethod(value1, value2 = '', value3 = '')
{
   // TO DO
}

In Java I can overload the methods:

function myMethod(value1)
{
   // TO DO
}

function myMethod(value1, value2)
{
   // TO DO
}

In javascript I don't know:

var myAwesomeOptions =
{
   'value1' : 'abc',
   'value3' : 'def'
}

myMethod(myAwesomeOptions);    

function myMethod(options)
{
   if (value1 == ???? ) ...
   or

   switch(options)
   ....
}

As you can see I am trying to do an overload for a function. How can I pass values to a functions with optional parameters?

Upvotes: 0

Views: 112

Answers (3)

Anton Moroz
Anton Moroz

Reputation: 3

You can do in the following way:

function myMethod() {
 switch (arguments.length) {
  case 0:
   //TO DO
   break;
  case 1:
   var value1 = arguments[0];
   //TO DO
   break;
 }
}

Upvotes: 0

Mahbub
Mahbub

Reputation: 3118

There's Argument object in JavaScript. For example.

function testme()
{
    var first_name=arguments[0] || "John";
    var last_name=arguments[1] || "Doe";
    alert(first_name);
    alert(last_name);
}

testme();

testme("Jane");

So you can use the Argument object to overload functions. Of course you can also pass array or collections too.

Upvotes: 0

Akhil
Akhil

Reputation: 2602

Chech this link..

Object.prototype.toString.call(vArg) === "[object Array]";

Upvotes: 2

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