Ecma Script

Hi this is jayasankar i have small requirement,
using Ecma script,I created CustomList added few items that items i want display onother form,i tryed 2 ways,one is using designer another one snippet webpart,but i am not getting any output ,any one have idea please let me know.my mail ID is jaya61143@outlook.com

<script type=”text/javascript”>
var  clientContext;
var  list;
function retrieveWebSiteProperties() {
  SP.SOD.executeOrDelayUntilScriptLoaded(retrieveWebSiteProperties,’sp.js’);
}
function retrieveWebSiteProperties() {
    var clientContext = SP.ClientContext.get_current();
       this.oWebsite = clientContext.get_web();
    list = webSite.get_lists().getByTitle(‘CustomList’);
  var camlQuery = new SP.CamlQuery();
    camlQuery.set_viewXml(‘<View><RowLimit>10</RowLimit></View>’);
    this.collListItem = list.getItems(camlQuery);
     clientContext.load(collListItem);
    clientContext.executeQueryAsync(onQuerySucceeded,onQueryFailed);
}

function onQuerySucceeded() {
  var listItemInfo=””;
    var listItemEnumerator = collListItem.getEnumerator();
        
    while (listItemEnumerator.moveNext()) {
        var oListItem = listItemEnumerator.get_current();
        listItemInfo += ‘\nID: ‘ + oListItem.get_id() + 
            ‘\nTitle: ‘ + oListItem.get_item(‘Title’) + 
            ‘\ID: ‘ + oListItem.get_item(‘ID’);
    }

    alert(listItemInfo.toString());
   }
    
function onQueryFailed(sender, args) {
     alert(‘Request failed. ‘ + args.get_message() + 
        ‘\n’ + args.get_stackTrace());
}
</script>
<input type=”button” value=”Click me” onclick=”retrieveWebSiteProperties();” />