10 recommended articles about advanced JavaScript

JS implements local file upload to Alibaba Cloud server Preface In the previous blog "JavaScript Advanced (8) JS implements image preview and import server function" (click to view details), JS implements JS to preview and upload local image files Operation to Alibaba Cloud server. This time you need to upload the locally packaged files to the Alibaba Cloud server. This operation cannot be accomplished using the previous image file upload method. The operation interface is as follows: Idea The format of files transferred between local and server should be the familiar Base64 format. First, you need to convert the local file into Base64 format. After transferring it to the server, the file in Base64 format is converted into the original file on the server side. Source code analysis controller/*--------------Mobile APP version management G030 G031------------------------ -*/ medModule.controller('VersionContr

1. Recommended content for importing the server

##Introduction: JS implements local file uploading to Alibaba Cloud server Preface  ), the JS operation of previewing and uploading local image files to the Alibaba Cloud server is implemented. This time, it is necessary to upload the local packaged files to the Alibaba Cloud server. This operation cannot be completed using the previous image file upload method. As follows: Ideas    &n...

2. Detailed introduction to local file upload

Introduction: JS implementation of uploading local files to Alibaba Cloud Server Preface      In the previous blog " JavaScript Advanced (8) JS Implementation Image Preview and Import Server Function" (click to view details) implements the JS operation of previewing and uploading local image files to the Alibaba Cloud server. This time, you need to upload the local packaged files to the Alibaba Cloud server. The image file upload method cannot complete this operation. The operation interface is as follows: Things    &n...

##3.

Detailed introduction to Alibaba Cloud Server

Introduction: JS implements uploading local files to Alibaba Cloud Server Preface      In the previous blog In " JavaScript Advanced (8) JS Implements Image Preview and Importing Server Function" (click to view details), JS is implemented to preview and upload local image files to the Alibaba Cloud server. This time, it is necessary to package the local image. The file is uploaded to the Alibaba Cloud server. This operation cannot be completed using the previous image file upload method. The operation interface is as follows:   Ideas     &n...

#4.

JavaScript Advanced (10) Array Array Detailed Explanation

##Introduction: This article describes JavaScript Advanced ( 10) For details on the Array array, friends in need can refer to

5. JavaScript Advanced (9) JS to upload local files to Alibaba Cloud Server

Introduction: In the previous blog "JavaScript Advanced (8) JS implements image preview and import server function" ( (Click to view details), implements the JS operation of previewing local image files and uploading them to the Alibaba Cloud server. This time you need to upload the locally packaged files to the Alibaba Cloud server. This operation cannot be accomplished using the previous image file upload method.

6. Advanced JavaScript (8) JS implements image preview and import server functions

Introduction: During the project development process, the file upload function needs to be implemented. Take this opportunity to learn it. This functionality can be supported using the existing input type "file" in HTML. As shown below:

7. JavaScript Advanced (7) The difference between JS intercepting string substr and substring methods

Introduction: If length is 0 or a negative number, an empty string will be returned. If this parameter is not specified, the substring will be continued to the end of stringvar.

8. JavaScript Advanced (6) Reading and Saving Files with JavaScript

Introduction: Because Google does not yet provide the function of synchronizing plug-in data, importing and exporting plug-in configurations must deal with files. For security reasons, only IE provides APIs for accessing files; but with the arrival of HTML 5, other browsers have also supported it.

9. JavaScript Advanced (5) Functions for taking decimals and integers in js

Introduction: This article describes the details of some functions for taking decimals and integers in JavaScript Advanced (5) js. Friends in need can refer to the following

10. JavaScript Advanced (4) Three ways to convert js strings into numbers

Introduction: The value obtained when js reads a text box or other form data is of string type, for example, two text boxes a and b. If the value of a is 11 and the value of b is 9, then a.value is smaller than b.value because they are both in string form.

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