For each helper function

[gabrielp]

If you're like me and hate for loops, this makes iterating a little simpler within Scripter:

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/*
   Foreach helper function
	  callback
		Function to execute for each element, taking three arguments:
		currentValue
			The current element being processed in the array.
		index
			The index of the current element being processed in the array.
		array
			The array that forEach() is being applied to.
*/
var forEach = function(array, callback){
	var currentValue, index;
	for (i = 0; i < array.length; i += 1) {
		currentValue = array[i];
		index = i;
		callback(currentValue, i, array);
    }
}

Example usage:

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	var toAddresses = s.getPropertyValueList('ToAddresses'); // String list property with multiple lines
	
	forEach(toAddresses, function(address, index){
		s.log(2, "address "+index+": "+address);
	});

Output

address 0: whatever@example.com
address 1: whatever2@example.com

[gabrielp]

This now supports constructed arrays that are empty.

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var forEach = function(array, callback){
	var currentValue, index;
	for (i = 0; i < array.length; i += 1) {
		if(typeof array[i] == "undefined"){
			currentValue = null;
		} else {	
			currentValue = array[i];
		}
		index = i;
		callback(currentValue, i, array);
    }
}

For example:

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var array = new Array(10); // forEach would loop this 10 times

[gabrielp]

This version resets the i index variable every time. This was causing confusing behavior within nested forEach loops.

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// For each helper function
var forEach = function(array, callback){
   var currentValue, index;
   var i = 0;
   for (i; i < array.length; i += 1) {
      if(typeof array[i] == "undefined"){
         currentValue = null;
      } else {   
         currentValue = array[i];
      }
      index = i;
      callback(currentValue, i, array);
    }
}