Add/remove items

</> Source
<!DOCTYPE html>
<html>
<head>
	<title>Add/remove items</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>
	<script>
		var myForm, formData;
		function doOnLoad() {
			formData = [
				{type: "settings", position: "label-left", labelWidth: 120, inputWidth: 160},
				{type: "label", name: "newProject", label: "New project", list:[
					{type: "input", label: "Project Name", value: "New project", validate:"NotEmpty"}
				]},
				{type: "label", name: "advanced", label: "Advanced", list:[
					{type: "input", label: "Command line options", rows: 2, value: "-vf crop=618:526:0:14,pp=lb"}
				]},
				{type: "button", name: "button", value: "Save"}
			];
			myForm = new dhtmlXForm("myForm", formData);

			document.getElementById("b1").disabled = false;
			document.getElementById("b2").disabled = false;
			document.getElementById("b3").disabled = false;
			document.getElementById("b4").disabled = false;
		}
		var k = 1;
		function addVideoSettings() {
			var itemData = {type: "label", label: "Video settings", list:[
						{type: "select", name: "video_codec", label: "Codec", validate: "NotEmpty", options:[
							{text: "DivX", value: "DivX"},
							{text: "XviD", value: "XviD", selected: true}
						]},
						{type: "select", name: "video_bitrate", label: "Bitrate", validate: "ValidTime", options:[
							{text: "728 kbps", value: "728"},
							{text: "1226 kbps", value: "1226", selected: true},
							{text: "2412 kbps", value: "2412"}
						]}
					]};
			myForm.addItem(null, itemData, k++);
		}
		function addAudioSettings() {
			var itemData = {type: "label", label: "Audio settings", list: [
						{type: "select", label: "Format", validate: "ValidTime", options:[
							{text: "AAC", value: "AAC"},
							{text: "AC3", value: "AC3", selected: true},
							{text: "MP3", value: "MP3"},
							{text: "FLAC", value: "FLAC"}
						]},
						{type: "select", label: "Bitrate", validate: "ValidTime", options:[
							{text: "128 kbps", value: "128"},
							{text: "160 kbps", value: "160"},
							{text: "256 kbps", value: "256"},
							{text: "320 kbps", value: "320", selected: true},
							{text: "448 kbps", value: "448"}
						]},
						{type: "select", label: "Channels", validate: "ValidTime", options:[
							{text: "2.0 Stereo", value: "2_0"},
							{text: "5.1 Dolby Digital", value: "5_1", selected: true}
						]}
					]};

			myForm.addItem(null, itemData, k++);

		}
		function removeAdvanced() {
			myForm.removeItem("advanced");
		}
		function removeButton() {
			myForm.removeItem("button");
		}
	</script>
</head>
<body onload="doOnLoad();">
	<input type="button" id="b1" value="Add Video Settings" onclick="addVideoSettings();this.disabled=true;">
	<input type="button" id="b2" value="Add Audio Settings" onclick="addAudioSettings();this.disabled=true;">
	<input type="button" id="b3" value="Remove Advanced" onclick="removeAdvanced();this.disabled=true;">
	<input type="button" id="b4" value="Remove Button" onclick="removeButton();this.disabled=true;">
	<br><br><br><br>
	<div id="myForm" style="height:350px;"></div>
</body>
</html>
Documentation

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