CODEWITHSUNDEEP
javascript
User7723337
User7723337

Reputation: 12018

Store callback in the object

Can we store callback function in a Object and then after call callback by retrieving from object. 

var myArray = [];

function myFoo(myCallback)
{
    var obj = new Object();
    obj.call_back = myCallback; // Store in object 

    myArray.push(obj); // Add in array
}

function doSomething(results)
{
    for(var index=0;index < myArray.length;index++)
    {
        var obj = myArray[index];
        if( obj.hasOwnProperty("call_back") )
        {
            var callbackMethod = obj.call_back;
            callbackMethod(results); // Call callback
        }
    }
}

Is it valid to implement?

Upvotes: 0

Views: 1909

Answers (1)

Michał Młoźniak
Michał Młoźniak

Reputation: 5556

Yes, it is valid. But do you want to store more information in those objects or just the callbacks? If only callbacks you can just store them as is in the array

var myCallbacks = [];

function myFoo(myCallback) {
  myCallbacks.push(myCallback);
}

function doSomething(results) {
  var index;

  for(index = 0; index < myCallbakcs.length; index++) {
    myCallbacks[index]();
  }
}

Upvotes: 2

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