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Detailed explanation of the programming object Observable in Angular2

Preface The core of RxJs is the Observable object, which is a combination of asynchronous and event programming using observable data sequences. The asynchronous programming model that is very similar to this is Promise. Promise is an asynchronous model b

2025-08-31
BootStrap's method to upload images using file-input plugin

Recently, I am writing my own personal website, the bootstrap framework used on the front end. When I have achieved the uploading function of pictures, I found a bootstrap-based image upload framework file-input plug-in on the Internet. This plug-in is ve

2025-08-31
Analysis of JS method to prevent web pages from being embedded in iframe framework

This article describes the method of JS to prevent web pages from being embedded in iframe framework. Share it with you for your reference, as follows: For example:<script type="text/javascript"> if (window!=top) // 判断当前的window对象是否是top对

2025-08-31
Implementation method of converting objects to original values

First, we need to understand the concept of original value. The original value is stored in the stack. That is, their values are stored directly at the location where the variable is accessed. The reference object stored in the heap, that is, the value st

2025-08-31
AngularJS introduction tutorial: Filter details

In this step you will learn how to create your own display filter. Please reset the working directory: git checkout -f step-9 Now go to a mobile details page. In the previous step, the phone details page displays "true" or "false" to i

2025-08-31
Simple example of using js to achieve the effect of a magnifying glass

I was a little excited when I posted a blog for the first time. I am now in Tianjin. I hope to work in the front-end industry in the future and I will not be able to study for a long time. In order to record my learning process and gains, I am of course a

2025-08-31
Sample code for implementing carousel effect components using React

Preface I found that React and AngularJS have completely different ideas. AngularJS is based on two-way binding, customizes data in the Modal layer, and then changes in both directions. But React changes the state of the view layer through prop and state.

2025-08-31
JavaScript pre-parsement and related skills analysis

This article describes JavaScript pre-parsing and related techniques. I will share it with you for your reference, the specific details are as follows: Variables are the same, start with the error comparison prompts of these two small examples. alert(y1);

2025-08-31
A brief discussion on the window in JS iframe

1. The reference of window.self to the current window itself; self, window.self, window and window are equivalent 2. The reference of window.top to the top window. If it is the top window, it returns itself 3. The reference of window.parent to the parent

2025-08-31
Two JavaScript AES encryption methods (can be mutually encrypted and decrypted with Java)

Since JavaScript is a weak-type scripting language, various problems arise when it interacts with a strong-type background language, especially the encryption and decryption operations. Because I encountered the problem of using js and Java to encrypt and

2025-08-31
JavaScript implements copying articles automatically add copyright

The first type<script type="text/javascript"> document.body.oncopy = function(){ setTimeout( function (){ var text = clip

2025-08-31
BootStrap+Angularjs+NgDialog implementation mode dialog box

This article mainly introduces the "angularjs+bootstrap+ngDialog implementation mode dialog box". Students who are interested in Javascript tutorials can refer to it: When completing a background management system, you need to use a table to dis

2025-08-31
A video control for playing videos in html5 only supports Android's default formats mp4 and 3gp

The code copy is as follows:<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml"><head>

2025-08-31
JavaScript must know (3) Where does String come from?

String We know that javascript includes: number, string, boolean, null, undefined primitive types and Object types. In my understanding, method attributes should be something that objects can have. var str="hello,world"

2025-08-31
Simple implementation code for dynamic loading of js and css

1. Native js: /** * Loading js and css files* @param jsonData.path Prefix path* @param jsonData.url The js path or cs that need to be loaded

2025-08-31

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