这里我们使用fs.existsSync。 // 判断目录是否存在的函数functioncheckDirectoryExists(dirPath){// 使用 fs.existsSync 检查目录if(fs.existsSync(dirPath)){console.log(`目录 "${dirPath}" 存在.`);returntrue;// 目录存在,返回 true}else{console.log(`目录 "${dirPath}" 不存在.`);returnfalse;// 目录...
此方法将路径作为输入并测试用户的权限。...让我们看下面的示例,该示例使用fs.access()检查给定目录是否存在: const fs = require('fs'); // directory to check if exists const...'does not exist' : 'exists'}`); }); 查看本指南,以了解有关在Node.js应用程序中读写文件的更多信息。
private void CheckFileExistsCreateNew(string filepath) { if (!Directory.Exists(Server.MapPath(filepath))) { Directory.CreateDirectory(Server.MapPath(filepath));//创建文件夹 } } #endregion #region 上传图片 //上传头像 [HttpPost] public JsonResult UploadifyHeader(HttpPostedFileBase fileData) { if...
mkdir("./newDirName")Create a directory (recursive by default) rmdir("./newDirName")Delete a directory (recursive by default) exists("./aFile.txt")Check if a file exists rm("./myFile")Delete a file dirName("./path/file.txt")Return the directory name for a path ...
另外,本文工具函数的命名非常值得借鉴。 1. 第一部分:数组 1. `all`:布尔全等判断 代码语言:javascript 复制 constall=(arr,fn=Boolean)=>arr.every(fn);all([4,2,3],x=>x>1);// trueall([1,2,3]);// true 2. `allEqual`:检查数组各项相等 ...
exists allows you check check if a file exists at a given directory exists(source: string, shared: boolean, success: any, error: any) source: the filepath relative to the shared/non shared directory shared: source relative to shared or non shared success: callback called if the file exis...
The path segment for the current directory (./) is required in order to create the correct static asset path to the JS file. The {PACKAGE ID} placeholder is the library's package ID. The package ID defaults to the project's assembly name if <PackageId> isn't specified in the project...
All areas (unless a specificfrontendoradminhtmlentry exists) Mixin files Location Mixins are JavaScript files located under theweb/jsdirectory under an area specific directory. The mixin file can be nested under more directories as long as those directories are underweb/js. ...
(storageAccountConnectionString, containerName);if(!(awaitblobContainerClient.exists())) {awaitblobContainerClient.create(); }constcheckpointStore =newBlobCheckpointStore(blobContainerClient);constconsumerClient =newEventHubConsumerClient( consumerGroup, eventHubConnectionString, eventHubName, checkpointStore );...
If the map service is requested from a different domain, a CORS enabled server or a proxy is required. Reference an ArcGIS portal Item ID You can also create a MapImageLayer from its ID if it exists as an item in ArcGIS Online or ArcGIS Enterprise. For example, the following snippet sho...