eventName=evt.type; //返回当前 Event 对象表示的事件的名称,如:click,mouseover,mouseout }else//IE { element=event.srcElement; //返回触发此事件的元素,只支持IE eventName=event.type; //返回当前 Event 对象表示的事件的名称,如:click,mouseover,mouseout } if(eventName=="mouseout") { element.src=...
Retrieves a string that represents the type of the event, such as "mouseout", "click", etc. This property can be useful when the same handler function is registered for different type of events.
function handleEvent() { var oTextbox = document.getElementById("txt1"); oTextbox.value += " " + event.type; //event是所触发的事件对象 } 请在文本框中操作键盘: <textarea id="txt1" rows="6" cols="30"></textarea> --- 如果光标定位文本...
TypeScript是微软开发的一个开源的编程语言,通过在JavaScript的基础上添加静态类型定义构建而成。TypeScript通过TypeScript编译器或Babel转译为JavaScript代码,可运行在任何浏览器,任何操作系统。 通过如下配置,您可以在快应用IDE中使用TypeScript进行开发,开发单独的ts模块并在ux文件中导入使用。 启动第三方NPM库。 执行...
In case the onDetected event is no longer relevant, offDetected removes the given handler from the event-queue. When no handler is passed, all handlers are removed.The result objectThe callbacks passed into onProcessed, onDetected and decodeSingle receive a data object upon execution. The data...
Use .catch() to provide a "catch value" to be returned in the event of a parsing error. const numberWithCatch = z.number().catch(42); numberWithCatch.parse(5); // => 5 numberWithCatch.parse("tuna"); // => 42 Optionally, you can pass a function into .catch that will be re...
定义EventType 的值。可能的值包括:“$all”、“traces”、“customEvents”、“pageViews”、“browserTimings”、“requests”、“dependencies”、“exceptions”、“availabilityResults”、“performanceCounters”、“customMetrics” TypeScript 复制 type EventType = | "$all" | "traces" | "customEvents" | ...
代码语言:javascript 复制 type User={firstName:string;lastName:string;}; 我们可以创建一个返回用户全名的函数,如下所示: 代码语言:javascript 复制 functiongetUserFullName(user:User):string{return`${user.firstName}${user.lastName}`;} 大多数时候 TypeScript 足够聪明,可以推断出函数的返回类型,因此,在这...
Word.EventType enumReferenz Feedback Paket: word Stellt Informationen zum Typ eines ausgelösten Ereignisses bereit.Hinweise[ API-Satz: WordApi 1.5 ]BeispieleTypeScript Kopieren // Link to full sample: https://raw.githubusercontent.com/OfficeDev/office-js-snippets/prod/samples/word/10-...
This may cause problems with classes that store or bind the value of this in the constructor to use it later. For example, the following code that attaches a click handler to an HTML button will not work as one might expect, because this in the event handler refers to a substitute that...