DevExtreme Angular - Overview

The Lookup is a widget that allows an end user to search for an item in a collection shown in a drop-down menu.

View Demo

The following code adds the Lookup widget to your page. The simplest configuration requires only a dataSource to be specified. In addition, you can define the placeholder to be displayed when the Lookup input field is empty.

jQuery
HTML
JavaScript
<div id="lookupContainer"></div>
$(function() {
    $("#lookupContainer").dxLookup({
        dataSource: [
            "HD Video Player",
            "SuperHD Video Player",
            "SuperPlasma 50",
            // ...
        ],
        placeholder: "Select a product..."
    });
});
Angular
HTML
TypeScript
<dx-lookup
    [dataSource]="lookupDataSource"
    placeholder="Select a product...">
</dx-lookup>
import { DxLookupModule } from "devextreme-angular";
// ...
export class AppComponent {
    lookupDataSource = [ "HD Video Player", "SuperHD Video Player", "SuperPlasma 50" ];
}
@NgModule({
    imports: [
        // ...
        DxLookupModule
    ],
    // ...
})

If your data is an array of objects, specify:

  • valueExpr
    The data field whose value will be written into the value option.
  • displayExpr
    The data field whose value will be displayed within the inner List widget and in the input field of the Lookup.
jQuery
JavaScript
var lookupData = [
    { id: 1, country: "Afghanistan" },
    { id: 2, country: "Albania" },
    // ...
];

$(function() {
    $("#lookupContainer").dxLookup({
        dataSource: lookupData,
        valueExpr: 'id',
        displayExpr: 'country'
    });
});
Angular
HTML
TypeScript
<dx-lookup
    [dataSource]="lookupDataSource"
    valueExpr="id"
    displayExpr="country">
</dx-lookup>
import { DxLookupModule } from "devextreme-angular";
// ...
export class AppComponent {
    lookupDataSource = [
        { id: 1, country: "Afghanistan" },
        { id: 2, country: "Albania" },
        // ...
    ];
}
@NgModule({
    imports: [
        // ...
        DxLookupModule
    ],
    // ...
})
See Also