/**

  @param objSelect an object returned by document.getElementById('myselect') or your favourite library function.
  @param arrDatos is an array or an array of arrays.
  @param numCurOption is the key of the option we need to be SELECTED.
  @param boolEmpty should be true if we need a first element without value and label.
*/
function array2select(objSelect, arrDatos, numCurOption, boolEmpty) {
	var elOptNew;
	objSelect.length = 0;
	if(boolEmpty) {
		elOptNew = document.createElement('option');
		elOptNew.value = elOptNew.text = '';
		addOption(objSelect, elOptNew);
	}
	for(var id in arrDatos) {
		if(typeof(arrDatos[id]) == 'object') {
			var arrResultado = arrDatos[id];
			var strValue = arrResultado.ID;
			var strText = arrResultado.LABEL;			
		} else {
			var strValue = id;
			var strText = arrDatos[id];
		}
		elOptNew = document.createElement('option');
		if(numCurOption == strValue) {
			elOptNew.selected = true;
		} 
		elOptNew.value = strValue;
		elOptNew.text = strText;
		addOption(objSelect, elOptNew);
	}
}

This function automates the creation of the <OPTION>s of a <SELECT> element. It's ideal for your AJAX apps when you create display elements using Javascript

It accepts to different kind of arrays:

An array of key:values…

var arrDirs = {
				"a1":"Sede central",
				"a2":"Envíos",
				"a4":"Facturación",
				"b1":"Sucursal"
			};


An array of arrays, where each of the child arrays have the sintax 'ID': value, 'LABEL': text…

var arrDirs = {
				"0":{"ID":"a1","LABEL":"Sede central"},
				"1":{"ID":"a2","LABEL":"Envíos"},
				"2":{"ID":"a4","LABEL":"Facturación"},
				"3":{"ID":"b1","LABEL":"Sucursal"}
			};

Note that the ID part can be a number or an string.

Array to SELECT

javascript, object, array

JavaScript