Reload options for select/combo

* ext/dhtmlxform_dyn.js required
cars and colors loaded from url, cactus loaded from local array

Log (clear)
</> Source
<!DOCTYPE html>
	<title>Reload options for select/combo</title>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
	<meta http-equiv="X-UA-Compatible" content="IE=edge"/>
	<link rel="stylesheet" type="text/css" href="../../../codebase/fonts/font_roboto/roboto.css"/>
	<link rel="stylesheet" type="text/css" href="../../../codebase/dhtmlx.css"/>
	<script src="../../../codebase/dhtmlx.js"></script>
		div#simpleLog {
			width: 500px;
			height: 300px;
			font-family: Tahoma;
			font-size: 11px;
			overflow: auto;
			margin-top: 10px;
		var myForm, formData, logObj;
		var localOpts = [
			{value: "1", text: "Columnar Cacti"},
			{value: "2", text: "Barrel Cacti"},
			{value: "3", text: "Hedgehog Cacti", selected: true},
			{value: "4", text: "Pincushion Cacti"},
			{value: "5", text: "Cholla Cacti"},
			{value: "6", text: "Prickly Pear Cacti"}
		function doOnLoad() {
			formData = [
				{type: "settings", position: "label-left", labelWidth: 100, inputWidth: 160},
				{type: "select", name: "sel", label: "Select", connector: "php/opts_select.php"},
				{type: "combo", name: "combo", label: "Combo", connector: "php/opts_select.php?mode=combo", offsetTop: 5},
				{type: "multiselect", name: "msel", label: "Multiselect", connector: "php/opts_select.php", size: 6, offsetTop: 5},
				// buttons
				{type: "button", value: "Cars", name: "cars", offsetTop: 20},
				{type: "button", value: "Colors", name: "colors"},
				{type: "button", value: "Cactus", name: "cactus"}
			myForm = new dhtmlXForm("myForm", formData);
			myForm.attachEvent("onButtonClick", function(name){
				for (var a in {sel:1,combo:1,msel:1}) {
					if (name == "cars" || name == "colors") {
						myForm.reloadOptions(a, "php/opts_select.php?mode="+a+"&type="+name);
					} else {
						myForm.reloadOptions(a, localOpts);
			myForm.attachEvent("onOptionsLoaded", function(name){
				logEvent("onOptionsLoaded, item name '"+name+"'<br>");
			myForm.attachEvent("onChange", function(name, value){
				logEvent("onChange, item name '"+name+"', value '"+value.toString()+"'<br>");
		function logEvent(t) {
			if (!logObj) logObj = document.getElementById("simpleLog");
			logObj.innerHTML += t;
		function clearLog() {
			if (!logObj) logObj = document.getElementById("simpleLog");
			logObj.innerHTML = "";
<body onload="doOnLoad();">
	<div id="myForm" style="height:350px;"></div>
	<div style="clear: both;">
		* ext/dhtmlxform_dyn.js required<br>
		cars and colors loaded from url, cactus loaded from local array<br><br>
	<div><b>Log (<a href="javascript:void(0);" onclick="clearLog();">clear</a>)</b></div>
	<div id="simpleLog"></div>


Check documentation to learn how to use the components and easily implement them in your applications.