JavaScript

There are a lot of incompatibilities between IE and other mainstream browsers, and there are some other browser-supported methods that can't be perfectly supported in IE, first of all, which support?1, directly in the HTML code element attribute

This is an internal object that is automatically generated when the function is run, and can only be used inside the function, but always points to the object that called it.Here are a few examples to deepen your understanding of this.(1) as a

Learning content:JavaScript official name ECMA script or ECMA-262Short JS1.js Embedding Method:(a) JavaScript prefixes introduced into JS1 href= "Javascript:alert (' Hello World ')">Helloa >(b) Inline referencesUse the script tag, which can be

1. Execute functions immediatelyExecute the function immediately, that is, immediately invoked function Expression (iife), just as its name is when the function is created and executed immediately. It does not bind any events, and it does not have

Example: The value of the character information passed into the function for processing.The simplification is as follows:CSS Section#wrap {width:100px;Background: #0f0;}HTML Sectionjs Section1. Object-Pass Referencevar owrap =

In Some development scenarios, we may inject thousands of nodes into the document at once, and in a short time the large number of DOM nodes in the browser may be too much for the browser, the result will often make the browser lag or

Block bubbling:Bubble Simple example, the son knew a secret message, it told Dad, Dad knew and told Grandpa, a level of transmission so as to cause the chaos of events, and stop bubbling is not let son tell Dad, Dad naturally won't tell Grandpa. The

in JavaScript, when we call a method of an object, we don't really care whether the object was originally designed to have this method, which is the characteristic of the dynamic type language. Can be implemented by the anti-curry (uncurrying)

ConceptThe observer pattern, also called the Publish subscription pattern (Publish/subscribe), defines a one-to-many relationship that allows multiple observer objects to listen to a Subject object at the same time, notifying all observer objects

1. JavaScript is a lightweight scripting language for browser parsing.2, HTML, JSP and other internal JS code written in between , external JS file to write JS code can not have , because the reference to external JS, The JS code is referenced to

Examples of drawing dynamic progress bars Based on D3.js, d3.js instances What is D3? D3 is a Data-Driven document. Listening to the name is a bit abstract. To put it simply, it is actually a JavaScript function library which is mainly used for data

Summary of commonly used message boxes in JS and summary of js messages First, let's take a look at the running effect. Add and share all the code: Document The above is all about the JS message box. Thank you for your

Javascript Random Number Generation Code sharing, JS random number code Let's take a look at the source code You can use it flexibly. We will share the specific JS Code with you: Document If you still have a simpler method, you

Example of using gm circular cropping and merging images in Nodejs, nodejsgm Speaking of image processing under Nodejs, the first thought may be gm. The bottom layer of gm can be GraphicsMagic (in fact, it is also the origin of gm) or ImageMagick

Understanding of html semantics and html Semantics Everyone knows that html is a hypertext markup language or hypertext link markup language. It is the most widely used language on the Internet and the main language used to form Web documents.

CssText method of the style object, csstext of the style object What is the essence of cssText? The essence of cssText is to set the style attribute value of the HTML element. How to Use cssText? domElement.style.cssText = "color:red; font-size:13px;

Talking about the basic idea of implementing the vue2.0 response and the basic idea of vue2.0 I recently read vue2.0 source code about responsive implementation. The following blog posts will use simple code to restore vue2.0's Implementation ideas

Node. js-based compression and decompression methods, node. js compression and decompression Compression format Zip and gzip are two of the most common compression formats. Of course, gzip is rarely used in Windows. Tar is an archive format, which

Idiom Study Notes (1), three-column layout, idiom Study Notes The three-column layout is fixed on the left and right, and the middle self-adaptation is often used in Web pages. There are many ways to achieve this layout. Here I mainly write five

Details about the JS value Number type, and details about the jsnumberNumber Problems Are you able to answer the following questions correctly? 0.1 + 0.2 = 0.3? How much does the. E-5 represent? How does one represent an octal format? How