This time I will show you how to use the Upload component in the vue project. What are the precautions when using the upload component in the vue project. The following is a practical case. , let’s take a look.
This article introduces an example of using element-ui's Upload upload component in the vue project and shares it with everyone. The details are as follows:
<el-upload> <el-button>确定</el-button></el-upload>
Among them, importFileUrl is the background interface, upLoadData is the additional parameter to be uploaded when uploading the file, uploadError is the fallback function when uploading the file fails, uploadSuccess is the fallback function when File Upload is successful, and beforeAvatarUpload is when uploading the file. For the function called before, we can judge the file type here.
data () { importFileUrl: 'http:dtc.com/cpy/add', upLoadData: { cpyId: '123456', occurTime: '2017-08' } }, methods: { // 上传成功后的回调 uploadSuccess (response, file, fileList) { console.log('上传文件', response) }, // 上传错误 uploadError (response, file, fileList) { console.log('上传失败,请重试!') }, // 上传前对文件的大小的判断 beforeAvatarUpload (file) { const extension = file.name.split('.')[1] === 'xls' const extension2 = file.name.split('.')[1] === 'xlsx' const extension3 = file.name.split('.')[1] === 'doc' const extension4 = file.name.split('.')[1] === 'docx' const isLt2M = file.size / 1024 / 1024 <p style="text-align: left;"> I recently used VUE as a front-end framework for my own project. When I needed to upload files to the server, my colleague told me that the action in upload, that is, the upload address cannot be changed dynamically. Then I took a look and found that the following processing is required. To use it dynamically: </p><p style="text-align: left;"> Action is a required parameter, and its type is <a href="http://www.php.cn/wiki/57.html" target="_blank">string</a>. We write action as: action, followed by a method name, call the method, and return the address you want. Code example: </p><pre class="brush:php;toolbar:false">//html 代码 <el-upload> <el-button>点击上传</el-button> <p></p> </el-upload>
// js 代码在 methods中写入需要调用的方法 methods:{ UploadUrl:function(){ return "返回需要上传的地址"; } }
I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!
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The above is the detailed content of How to use upload component in vue project. For more information, please follow other related articles on the PHP Chinese website!

JavaScript originated in 1995 and was created by Brandon Ike, and realized the language into C. 1.C language provides high performance and system-level programming capabilities for JavaScript. 2. JavaScript's memory management and performance optimization rely on C language. 3. The cross-platform feature of C language helps JavaScript run efficiently on different operating systems.

JavaScript runs in browsers and Node.js environments and relies on the JavaScript engine to parse and execute code. 1) Generate abstract syntax tree (AST) in the parsing stage; 2) convert AST into bytecode or machine code in the compilation stage; 3) execute the compiled code in the execution stage.

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Both Python and JavaScript's choices in development environments are important. 1) Python's development environment includes PyCharm, JupyterNotebook and Anaconda, which are suitable for data science and rapid prototyping. 2) The development environment of JavaScript includes Node.js, VSCode and Webpack, which are suitable for front-end and back-end development. Choosing the right tools according to project needs can improve development efficiency and project success rate.

Yes, the engine core of JavaScript is written in C. 1) The C language provides efficient performance and underlying control, which is suitable for the development of JavaScript engine. 2) Taking the V8 engine as an example, its core is written in C, combining the efficiency and object-oriented characteristics of C. 3) The working principle of the JavaScript engine includes parsing, compiling and execution, and the C language plays a key role in these processes.

JavaScript is at the heart of modern websites because it enhances the interactivity and dynamicity of web pages. 1) It allows to change content without refreshing the page, 2) manipulate web pages through DOMAPI, 3) support complex interactive effects such as animation and drag-and-drop, 4) optimize performance and best practices to improve user experience.

C and JavaScript achieve interoperability through WebAssembly. 1) C code is compiled into WebAssembly module and introduced into JavaScript environment to enhance computing power. 2) In game development, C handles physics engines and graphics rendering, and JavaScript is responsible for game logic and user interface.

JavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.


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