What is the best way to send several arguments to the onSuccess function in Prototype?

Question

What is the best way to send several arguments to the onSuccess function in Prototype?

I am new to utilizing the Prototype library and I was wondering how it is possible to pass multiple arguments to the onSuccess/onFailure functions in Prototype. Let's say, for example:

new Ajax.Request('testurl',{
        method: 'post',
        parameters: {param1:"A", param2:"B", param3:"C"},
        onSuccess: fnSccs,
        onFailure: fnFail
        })

In my success function fnSccs:

function fnSccs(response)
{
    alert(response.responseText);
}

I am interested in passing a new argument to the fnSccs function. Can someone please provide guidance on how this can be achieved? Thank you.

javascript ajax prototypejs call

Answer 1

Answer №1

If you nest your success function within another function that takes in a specific parameter and returns the original function, you can maintain access to your old function:

new Ajax.Request('testurl',{
                method: 'post',
                parameters: {param1:"A", param2:"B", param3:"C"},
                onSuccess: mySuccess('myValue1', 'myValue2'),
                onFailure: fnFail
                })

function mySuccess(param1, param2){
  return function(response){ // Your previous success function
    alert(param1);  // The parameter is still accessible here
    alert(param2);
    alert(response);
  }
}

By calling mySuccess(...), you receive your original function while still being able to utilize the parameters due to their allocation within the outer closure.

You can view the live example here.

Answer 2

If you nest your success function within another function that takes in a specific parameter and returns the original function, you can maintain access to your old function:

new Ajax.Request('testurl',{
                method: 'post',
                parameters: {param1:"A", param2:"B", param3:"C"},
                onSuccess: mySuccess('myValue1', 'myValue2'),
                onFailure: fnFail
                })

function mySuccess(param1, param2){
  return function(response){ // Your previous success function
    alert(param1);  // The parameter is still accessible here
    alert(param2);
    alert(response);
  }
}

By calling mySuccess(...), you receive your original function while still being able to utilize the parameters due to their allocation within the outer closure.

You can view the live example here.

What is the best way to send several arguments to the onSuccess function in Prototype?

Answer №1

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