<script type="text/javascript">   

ExecuteOrDelayUntilScriptLoaded(functionName, "sp.js");   //this is necessary to ensure the library is loaded before function triggered
 var namedListItem;  


function functionName() {


var clientContext = SP.ClientContext.get_current();
//or use the syntax below for accessing a list that may not reside in the current site
//var clientContext = new SP.ClientContext(rootUrl);

var myList = clientContext.get_web().get_lists().getByTitle('myList'); //actual list name here

var camlQuery = new SP.CamlQuery();
camlQuery.set_viewXml(''); //caml statement goes here between the single quotes
namedListItem = myList.getItems(camlQuery);
        
   clientContext.load(namedListItem);
   //or use below to specify to load only the required properties for better performance
   //clientContext.load(namedListItem, 'Include(field1, field2)');
        
   clientContext.executeQueryAsync(Function.createDelegate(this, this.onQuerySucceeded), Function.createDelegate(this, this.onQueryFailed));
}

function onQuerySucceeded(sender, args) {

    var listItemInfo = '';

    var listItemEnumerator = namedListItem.getEnumerator();
        
    while (listItemEnumerator.moveNext()) {
        var oListItem = listItemEnumerator.get_current();
        listItemInfo +=  '\nField1: ' + oListItem.get_item('field1') +    ', Field2: ' + oListItem.get_item(' field2'); //replace field1 & field2 with actual column names
    }

    alert(listItemInfo.toString());
}

function onQueryFailed(sender, args) {

    alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
}

</script>

<script type="text/javascript">   

ExecuteOrDelayUntilScriptLoaded(functionName, "sp.js");   //this is necessary to ensure the 
library is loaded before function triggered
 var namedListItem;  


function functionName() {


var clientContext = SP.ClientContext.get_current();
//or use the syntax below for accessing a list that may not reside in the current site
//var clientContext = new SP.ClientContext(rootUrl);

var myList = clientContext.get_web().get_lists().getByTitle('myList'); //actual list name here

var camlQuery = new SP.CamlQuery();
camlQuery.set_viewXml(''); //caml statement goes here between the single quotes
namedListItem = myList.getItems(camlQuery);
        
   clientContext.load(namedListItem);
   //or use below to specify to load only the required properties for better performance
   //clientContext.load(namedListItem, 'Include(field1, field2)');
        
   clientContext.executeQueryAsync(Function.createDelegate(this, this.onQuerySucceeded), Function.createDelegate(this, this.onQueryFailed));
}

function onQuerySucceeded(sender, args) {

    var listItemInfo = '';

    var listItemEnumerator = namedListItem.getEnumerator();
        
    while (listItemEnumerator.moveNext()) {
        var oListItem = listItemEnumerator.get_current();
        listItemInfo +=  '\nField1: ' + oListItem.get_item('field1') +    ', Field2: ' + oListItem.get_item(' field2'); //replace field1 & field2 with actual column names
    }

    alert(listItemInfo.toString());
}

function onQueryFailed(sender, args) {

    alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
}

</script>

<script type="text/javascript">   

ExecuteOrDelayUntilScriptLoaded(functionName, "sp.js");   //this is necessary to ensure the library is loaded before function triggered 


function functionName() {


var clientContext = SP.ClientContext.get_current();
//or use the syntax below for accessing a list that may not reside in the current site
//var clientContext = new SP.ClientContext(rootUrl);

var myList = clientContext.get_web().get_lists().getByTitle('myList'); //actual list name here

var camlQuery = new SP.CamlQuery();
camlQuery.set_viewXml(''); //caml statement goes here between the single quotes
this.collListItem = myList.getItems(camlQuery);
        
   clientContext.load(collListItem);
   //or use below to specify to load only the required properties for better performance
   //clientContext.load(collListItem, 'Include(field1, field2)');
        
   clientContext.executeQueryAsync(Function.createDelegate(this, this.onQuerySucceeded), Function.createDelegate(this, this.onQueryFailed));
}

function onQuerySucceeded(sender, args) {

    var listItemInfo = '';

    var listItemEnumerator = collListItem.getEnumerator();
        
    while (listItemEnumerator.moveNext()) {
        var oListItem = listItemEnumerator.get_current();
        listItemInfo +=  '\nField1: ' + oListItem.get_item('field1') +    ', Field2: ' + oListItem.get_item(' field2'); //replace field1 & field2 with actual column names
    }

    alert(listItemInfo.toString());
}

function onQueryFailed(sender, args) {

    alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
}

</script>

<script type="text/javascript">   

ExecuteOrDelayUntilScriptLoaded(functionName, "sp.js");   //this is necessary to ensure the library is loaded before function triggered 


function functionName() {


var clientContext = SP.ClientContext.get_current();
var myList = clientContext.get_web().get_lists().getByTitle('myList'); //actual list name here

var camlQuery = new SP.CamlQuery();
camlQuery.set_viewXml(''); //caml statement goes here between the single quotes
this.collListItem = myList.getItems(camlQuery);
        
   clientContext.load(collListItem);
   //or use below to specify to load only the required properties for better performance
   //clientContext.load(collListItem, 'Include(field1, field2)');
        
   clientContext.executeQueryAsync(Function.createDelegate(this, this.onQuerySucceeded), Function.createDelegate(this, this.onQueryFailed));
}

function onQuerySucceeded(sender, args) {

    var listItemInfo = '';

    var listItemEnumerator = collListItem.getEnumerator();
        
    while (listItemEnumerator.moveNext()) {
        var oListItem = listItemEnumerator.get_current();
        listItemInfo +=  '\nField1: ' + oListItem.get_item('field1') +    ', Field2: ' + oListItem.get_item(' field2'); //replace field1 & field2 with actual column names
    }

    alert(listItemInfo.toString());
}

function onQueryFailed(sender, args) {

    alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
}

</script>

This code works for me without requiring any includes, plugins, or service packs. It should also integrate seamlessly with jquery. If needing to perform this process more than once on a page, make sure namedListItem variable is unique for each case (use different names for that page-scoped variable in each case).

For caml queries, wrap Query tag in View tag.

For lookup fields use .get_lookupValue() property syntax. For example...

<pre>topNavSection[enm] = oListItem.get_item('Section').get_lookupValue();</pre>

SHAREPOINT 2010 READ FROM LIST USING ECMASCRIPT

javascript, list, object, sharepoint

JavaScript