Xrm.WebApi (Client API reference) Sample Code
Xrm.WebApi.retrieveMultipleRecords("account", "?$select=name,accountnumber,address1_line1,address1_line2&$filter=name ne null&$orderby=accountnumber asc&$top=10").then(
function success(results) {
console.log(results);
for (var i = 0; i < results.entities.length; i++) {
var result = results.entities[i];
// Columns
var accountid = result["accountid"]; // Guid
var name = result["name"]; // Text
var accountnumber = result["accountnumber"]; // Text
var address1_line1 = result["address1_line1"]; // Text
var address1_line2 = result["address1_line2"]; // Text
}
},
function(error) {
console.log(error.message);
}
);