removeObject: function (that) { // 监控canvas的object:selected事件 that.fabricCanvas.on('object:selected', function (option) { // 监控页面的键盘事件 document.onkeydown = function (e) { // 是否点击delete if (e.keyCode === 8) { // 移除当前所选对象 that.fabricCanvas.remove(option.target...
8. object 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // 指定对象包含的属性 let b: { name: string } b = { name: '小丞' } 必须对象成员完全一致,如果对象中有可选属性,我们可以采用 ? 来处理 代码语言:javascript 代码运行次数:0 运行 AI代码解释 let b: { name: string, age?: strin...
propertyKey: string | symbol ) => void; 属性装饰器顾名思义,用来装饰类的属性。它接收两个参数: target: Object - 被装饰的类 propertyKey: string | symbol - 被装饰类的属性名 趁热打铁,马上来个例子热热身: function logProperty(target: any, key: string) { delete target[key]; const backingFiel...
functionlogProperty(target:any,key:string){deletetarget[key];constbackingField="_"+key;Object.defineProperty(target,backingField,{writable:true,enumerable:true,configurable:true});// property getterconstgetter=function(this:any){constcurrVal=this[backingField];console.log(`Get:${key}=>${currVal}`);r...
import "reflect-metadata"; export const SerializeMetaKey = "Serialize"; //序列化装饰器 export function Serialize(name?: string) { return (target: Object, property: string): void => { Reflect.defineMetadata(SerializeMetaKey, name || property, target, property); }; } 代码似乎什么都没干,就...
object") {// Check to see if it has a string name property.if("name"inpackageJSON &&typeofpackageJSON.name ==="string") {// ~~~// error! Property 'name' does not exist on type 'object.returnpackageJSON.name;// ~~~// error! Property 'name' does not exist on type 'object.}...
delete form[key] } Object.assign(form, getInitForm()) } </script> <script setup lang="ts"> import { useAppStore, useUserStore } from '@/stores' import { useLoading } from '@/hooks' // stores 或 hooks 的使用命名规则定义 const appStore = useAppStore() ...
// ./foo.ctsexportfunctionhelper(){console.log("hello world!");}// ./bar.mtsimport{helper}from"./foo.cjs";// prints "hello world!"foo.helper(); There isn’t always a way for TypeScript to know whether these named imports will be synthesized, but TypeScript will err on being permi...
If the only known fact about the type is that it's some object, use the type object, not Object or { [key: string]: any }. var foo: string | any: When any is used in a union type, the resulting type is still any. So, while the string portion of this type annotation may ...
export function runWorker(path: string, cb: WorkerCallback, workerData: object | null = null) { const worker = new Worker(path, { workerData }); worker.on('message', cb.bind(null, null)); worker.on('error', cb); worker.on('exit', (exitCode) => { ...