例子 其他非 boolean 类型 private String isHot; public String getIsHot() { return isHot;...
typeIPromiseSig=Symbol|string|number|ErrortypePromiseType<TextendsPromise<any>>=TextendsPromise<inferU>?U:neverinterfacePromise<T>{customCatch(cb:Function,filter:(d:any)=>boolean):Promise<T>ignore(cb:Function,sig?:IPromiseSig|IPromiseSig[]):Promise<T>capture(cb:Function,sig?:IPromiseSig|IPromiseS...
functionwillLiLeiWifeLendMeMoeny():Promise<boolean>{ returnnewPromise<boolean>(function(lend,reject){ // 借还是不借 }); } 如果李雷借我钱了,我就转钱给家里,没有,我应该要再去找别人借了。可以用下面的函数描述我此时的处境。 functiontransferMoneyToHome(money:number){ // 给家里转钱 } functionm...
Promise在JavaScript中是一个处理异步代码的解决方案,他的出现解决了JavaScript异步编程回调地狱的问题(此处 que一下wxapi)。 Promise对象代表一个异步操作,有三种状态:pending(进行中)fulfilled(已成功)rejected(已失败)。 一个Promsie实例必然处于上述的三个状态直译。 Promise的运行机制 当Promise被实例化后,其实例会处...
const promise1 = new Promise<number>(resolve => { resolve(1) }) const promise2 = new Promise<Boolean>(resolve => { setTimeout(resolve, 500, true); }); const promise3 = new Promise<string>((resolve, reject) => { reject("我是一个异常") }); Promise.all([promise1, promise2, ...
/** A boolean to set request's keepalive. */ keepalive?: boolean; /** A string to set request's method. */ method?: string; /** A string to indicate whether the request will use CORS, or will be restricted to same-origin URLs. Sets request's mode. */ ...
boolean isOK = ftp.login(userName, password); if (isOK) { System.out.println(ftp.getReplyString()); } else { throw new RuntimeException("Failed to login." + ftp.getReplyString()); } reply = ftp.cwd("~/subspsync"); if (!FTPReply.isPositiveCompletion(reply)) { ...
beforeUpload - Boolean 将已有且需要的条件拼起来,使用AntDesign Upload提供的beforeUpload作为Boolean判断已完成上传限制。 async beforeUpload(file) { const { filesSize, filesFormat, fileLimit}=this//文件大小、文件类型、图片/视频宽高限制const isFileSize= filesSize ? awaitthis.checkFileSize(file, files...
// Create a Promise constmyPromise1 =newPromise((resolve, reject) => { setTimeout(resolve,200,"King"); }); // Create another Promise constmyPromise2 =newPromise((resolve, reject) => { setTimeout(resolve,100,"Queen"); });
* required=Boolean 是否必填 * min=Number 最小长度 * max=Number 最大长度 * validator=Function({ cellValue, rule, rules, row, column, rowIndex, columnIndex }) 自定义校验,接收一个 Promise * trigger=blur|change 触发方式(除非特殊场景,否则默认为空就行) ...