Passing parameters to Success method in executeQueryAsync in SharePoint

Introduction

This is quick tip about how to pass parameters and retrieve values from the Success method in executeQueryAsync().

To pass a parameter in Success method use the following syntax:

Before passing parameters:

context.executeQueryAsync(Function.createDelegate(this,this.success)),
 Function.createDelegate(this, this.failed));

After passing parameters:

context.executeQueryAsync(
Function.createDelegate(this,function(){success(_parameter);}),
Function.createDelegate(this, this.failed));
function success(_parameter)
{
    alert("In Success Method! " + _parameter);
}

To retrieve values from Success method use the following syntax:

context.executeQueryAsync(
Function.createDelegate(this, function(){ _returnParam = success(_parameter);}),
Function.createDelegate (this, this.failed));
alert(_returnParam);