1. IIFE explains the full spelling of Imdiately Invoked Function Expression, a function expression that is executed immediately. As shown in the following code, it is an anonymous immediately executed function: (function(window, undefined){
// Code...
})(window); 2. The meaning of brackets 2.1 The meaning of brackets surrounding function(){} The purpose of this bracket is to convert function(){} into an expression. Like the source code of some libraries, I like to use the following method instead: ~function(){
// Code...
}(); Or this way: +function(){
// Code...
}(); In fact, the function is the same, which is to convert function(){} into an executable expression to facilitate execution
1. Detailed explanation of javascript modular programming
Introduction: 1. IIFE explains the full spelling of Imdiately Invoked Function Expression, a function expression that is executed immediately. As shown in the following code, it is an anonymous immediately executed function: 2. The meaning of brackets 2.1 The meaning of the brackets surrounding function(){} The purpose of this bracket is to convert function(){} into an expression. Like the source code of some libraries, I like to use the following method instead: Or this method: In fact, the function is the same, they all use functi...
2. C# Create MDI Form (graphics and text)
##Introduction: Open VS to create a WindowsForm program: Modify the form properties: Find the IsMdiContainer property and change it to True: Next, we create a button in the Form1 window to open a window and see if it is displayed in the Form1 window: Double-click the From1 form to create a button in the Form1_Load method, and Register a click event for the button: (created using code here) as shown in the figure: Run test:
3. php rmdir uses recursive function to delete non-empty directory instances detailed explanation
Introduction: We all know that the php rmdir() function is used to delete empty directories, but if you want to delete non- For empty directories, we must delete files or subdirectories in non-empty directories. This article introduces how to use PHP recursive functions to delete non-empty directories. Friends in need can refer to it
4. rrmdir Recursively delete directories and files under the directory in php
Introduction: php since The rmdir that comes with it can only delete empty directories. This rrmdir can recursively delete the directory and all the files in the directory. But be careful when using it and don’t delete all the files
5. PHP uses the two functions unlink() and rmdir() to delete files and folders
Introduction: Sometimes we need to use PHP to delete files and folders. PHP originally has functions to achieve this. Let’s simply record the code so that we can follow it later.
6. python file management
## Introduction: 1. os package The os package includes a variety of functions to implement many functions of the operating system. This package is very complex. Some commands of the os package are used for file management. We list the most commonly used ones here: mkdir(path) creates a new directory, path is a string representing the path of the new directory. Equivalent to the $mkdir command rmdir(path) to delete an empty directory, path is a string indicating the path of the directory you want to delete. Equivalent to the $rmdir command listdir(path) returns all files in the directory. Equivalent to...
7. javascript - simditor failed to upload large image
##Introduction: Use simditor to upload images, and the backend uses the PHP program to process the uploaded images. Use the move_uploaded_file method to move the uploaded images to the specified location. There is no problem in uploading small images, but it fails to upload a nearly 1M image. Move_uploaded_file is wrong. Why? ...
8. javascript - simditor Is there a size limit for uploading images?
Introduction: simditor will fail to upload pictures if it exceeds 2M, if it is less than 2M, even if it is 1.99 There is no problem with M. Is it because Simditor has set the upload size control somewhere?
9. python file management
## Introduction: 1. os package The os package includes a variety of functions to implement many functions of the operating system. This package is very complex. Some commands of the os package are used for file management. We list the most commonly used ones here: mkdir(path) creates a new directory, path is a string representing the path of the new directory. Equivalent to the $mkdir command rmdir(path) to delete an empty directory, path is a string indicating the path of the directory you want to delete. Equivalent to the $rmdir command listdir(path) returns all files in the directory. Equivalent to...
10. php recursively obtains files in the directory, including subdirectories
Introduction: Encapsulated into a method, the code is as follows: Function readFileFromDir($dir) { if (!is_dir($dir)) { return false; } } //Open the directory $ handle = opendir($dir); while (($file = readdir($handle)) !== fals ...
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