http://help.arcgis.com/en/webapi/javascript/arcgis/demos/widget/widget_legendvisible.htmlI saw this example and wanted to see if there was a way to have the check box not checked(dynampic map not visible) when the page was loaded. For example not have the "Fire" layer visible when the page was loaded.Thanks<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=7,IE=9" />
<!--The viewport meta tag is used to improve the presentation and behavior of the samples
on iOS devices-->
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"/>
<title>Updating the legend to display visible layers</title>
<link rel="stylesheet" type="text/css" href="http://serverapi.arcgisonline.com/jsapi/arcgis/2.3/js/dojo/dijit/themes/claro/claro.css">
<style>
html, body { height: 98%; width: 98%; margin: 0; padding: 5px; }
#rightPane{
width:20%;
}
#legendPane{
border: solid #97DCF2 1px;
}
</style>
<script type="text/javascript">var djConfig = {parseOnLoad: true};</script>
<script type="text/javascript" src="http://serverapi.arcgisonline.com/jsapi/arcgis/?v=2.3"></script>
<script type="text/javascript">
dojo.require("dijit.layout.BorderContainer");
dojo.require("dijit.layout.ContentPane");
dojo.require("dijit.layout.AccordionContainer");
dojo.require("esri.map");
dojo.require("esri.dijit.Legend");
dojo.require("esri.arcgis.utils");
dojo.require("dijit.form.CheckBox");
var map;
var legendLayers = [];
function init() {
var initialExtent = new esri.geometry.Extent({"xmin":-13133288,"ymin":4020012,"xmax":-13016186,"ymax":4090945,"spatialReference":{"wkid":102100}});
map = new esri.Map("map", { extent: initialExtent});
//Add the terrain service to the map. View the ArcGIS Online site for services http://arcgisonline/home/search.html?t=content&f=typekeywords:service
var basemap = new esri.layers.ArcGISTiledMapServiceLayer("http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer");
map.addLayer(basemap);
var quakeLayer = new esri.layers.ArcGISDynamicMapServiceLayer("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Earthquakes/EarthquakesFromLastSevenDays/MapServer",{id:'quakes'});
legendLayers.push({layer:quakeLayer,title:'Earthquakes'});
var fireLayer = new esri.layers.ArcGISDynamicMapServiceLayer("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Fire/Sheep/MapServer",{id:'fire'});
legendLayers.push({layer:fireLayer,title:"Fire"});
dojo.connect(map,'onLayersAddResult',function(results){
var legend = new esri.dijit.Legend({
map:map,
layerInfos:legendLayers
},"legendDiv");
legend.startup();
});
map.addLayers([fireLayer,quakeLayer]);
dojo.connect(map,'onLayersAddResult',function(results){
//add check boxes
dojo.forEach(legendLayers,function(layer){
var layerName = layer.title;
var checkBox = new dijit.form.CheckBox({
name: "checkBox" + layer.layer.id,
value: layer.layer.id,
checked: layer.layer.visible,
onChange: function(evt) {
var clayer = map.getLayer(this.value);
if (clayer.visible) {
clayer.hide();
} else {
clayer.show();
}
this.checked = clayer.visible;
}
});
//add the check box and label to the toc
dojo.place(checkBox.domNode,dojo.byId("toggle"),"after");
var checkLabel = dojo.create('label',{'for':checkBox.name, innerHTML:layerName},checkBox.domNode,"after");
dojo.place("<br />",checkLabel,"after");
});
});
//resize the map when the browser resizes - view the 'Resizing and repositioning the map' section in
//the following help topic for more details http://help.esri.com/EN/webapi/javascript/arcgis/help/jshelp_start.htm#jshelp/inside_guidelines.htm
var resizeTimer;
dojo.connect(map, 'onLoad', function(theMap) {
dojo.connect(dijit.byId('map'), 'resize', function() { //resize the map if the div is resized
clearTimeout(resizeTimer);
resizeTimer = setTimeout( function() {
map.resize();
map.reposition();
}, 500);
});
});
}
dojo.addOnLoad(init);
</script>
</head>
<body class="claro">
<div id="content" dojotype="dijit.layout.BorderContainer" design="headline" gutters="true" style="width: 100%; height: 100%; margin: 0;">
<div id="rightPane" dojotype="dijit.layout.ContentPane" region="right">
<div dojoType="dijit.layout.AccordionContainer">
<div dojoType="dijit.layout.ContentPane" id="legendPane" title="Legend" selected="true">
<div id="legendDiv"></div>
</div>
<div dojoType="dijit.layout.ContentPane" title="Natural Disasters" >
<span style="padding:10px 0;">Click to toggle the visibilty of the various natural disasters</span>
<div id="toggle" style="padding: 2px 2px;"></div>
</div>
</div>
</div>
<div id="map" dojotype="dijit.layout.ContentPane" region="center" style="overflow:hidden;">
</div>
</div>
</body>
</html>