offlineData

Gets or sets the offline state of the data source.

Parameters

data Array

The array of data items that replace the current offline state of the data source.

Returns

Array—An array of JavaScript objects that represent the data items. Changed data items have a __state__ field attached. That field indicates the type of change: "create", "update", or "destroy". Unmodified data items do not have a __state__ field.

Example - get the offline state

<script>
var dataSource = new kendo.data.DataSource({
    offlineStorage: "products-offline",
    transport: {
        read: {
            url: "https://demos.telerik.com/kendo-ui/service/products",
            dataType: "jsonp"
        },
        update: {
            url: "https://demos.telerik.com/kendo-ui/service/products/update",
            dataType: "jsonp"
        },
        parameterMap: function(options, operation) {
            if (operation !== "read" && options.models) {
                return {models: kendo.stringify(options.models)};
            }
        }
    },
    schema: {
        model: {
            id: "ProductID"
        }
    }
});

dataSource.fetch(function() {
    // go in offline mode
    dataSource.online(false);
    // change the ProductName field of the first data item
    dataSource.at(0).set("ProductName", "Updated");
    // sync to accept the changes
    dataSource.sync();
    // get the offline data
    var offlineData = dataSource.offlineData();
/* The result can be observed in the DevTools(F12) console of the browser. */
    console.log(offlineData[0].__state__); // displays "update"
});
</script>