TypeScript 4.9 还加强了一些关于如何使用 in 的检查,确保左侧可分配给类型 string | number | symbol,右侧可分配给对象。这有助于检查我们是否使用了有效的属性键,而不是不小心检查基元。 自动访问器 TypeScript 4.9 支持 ECMAScript 中即将推出的功能,称为自动访问器。自动访问器的声明就像类的属性一样,除了它们...
原理是编译时会生成 tsconfig.tsbuildinfo 的文件,记录着编译的文件和它们的 hash,当再次编译的时候,如果文件 hash 没变,那就直接跳过,从而提升了编译速度。 这是TypeScript 提供的编译性能优化机制,当项目比较大,tsc 执行的速度比较慢的时候,不妨尝试一下。
The title of the layer used to identify it in places such as the Legend and LayerList widgets. MapImageLayer type String For MapImageLayer the type is always "map-image". MapImageLayer url String|null|undefined The URL to the REST endpoint of the map service. MapImageLayer useViewTime...
参考W3C教程:http://www.w3school.com.cn/js/pro_js_referencetypes.asp 备注: JSON对象拓展,使用JSON. Stringify(/*Object*/)和JSON.parse(/*String*/)进行对象序列化,有时依赖引用对象的toJSON()方法。 3. TYPE – prototype chain JS是元解释型语言,当JS引擎执行JS代码时,会分析语法结构,并将得到的对象...
TypeDescription Promise<PortalItem> A promise that resolves with the PortalItem instance when the item has successfully been saved, or rejected otherwise. See also updateFrom Example const webmap = new WebMap(); // Use updateFrom to store the current view properties // in the webmap befor...
Device type Funding sources the buyer has opted to see As a result, each buyer might see a unique combination of buttons. Pay Later offers differ by country and have different buttons. To prevent certain buttons from displaying, see Disable funding in the JavaScript SDK reference. ...
MSDKPC 5.0.0.23 版本新增打开网页功能及网页 JS 调用接收回调功能。 展示网页的窗口使用的 WebView 模式(CEF 或 WebView2),取决于业务在 MSDKConfig.ini 中的 DEFAULT_WEBVIEW_TYPE 配置,详情可以参考前面【9.3.1 新增配置】章节进行配置; 9.5.1 功能使用 ...
import { type ReferenceProps } from './types' const ev = new CustomEvent('scalar:update-references-config', { detail: { configuration: { url: 'https://cdn.jsdelivr.net/npm/@scalar/galaxy/dist/latest.yaml', }, } satisfies ReferenceProps, }) document.dispatchEvent(ev) Vue.js The API ...
(Inherited from JSObjectReference) InvokeAsync<TValue>(String, Object[]) Invokes the specified JavaScript function asynchronously. JSRuntime will apply timeouts to this operation based on the value configured in DefaultAsyncTimeout. To dispatch a call with a different, or no timeout, consider ...
Type:string|number Sets the display width of the video player in pixels. Video.js-specific Options Each option isundefinedby default unless otherwise specified. aspectRatio Type:string Puts the player influidmode and the value is used when calculating the dynamic size of the player. The value sh...