JavaScript

1. Command mode 1.1 traditional command modeApplication scenario of the command pattern: the sender of the request and the requesting recipient eliminate the coupling relationshipTake the page click button for exampleAfter clicking the button, the

In operatorDetermines whether an object has a propertyReturns true as long as the object owns the property, otherwise falsevar point = {x:1, y:1};Alert (' x ' in point); Truevar arr = [' One ', ' both '];Alert (' Kang ' in arr); FalseAlert (' 1 ' in

Fourth: variables, ranges, and memory issuesTest Type: typeof is the best tool for determining whether a variable is a string, a numeric value, a Boolean, or a undefined . But assuming that the value of the variable is an object or null,typeof only

This article mainly describes the difference between using InnerText and InnerHTML to get the intermediate value of an element, and I personally understand the difference between the two as follows: Webelement.innertext: Gets the text that

1 Location.pathname; I didn't pay much attention to this before, so I studied. location.pathname:Returns the part of the URL after the domain name (domain name IP). For examplehttp://www.joymood.cn/wordpress/return to/wordpress/, or

Chapter 0 Why are you reading this book? As JS Primer Book, fill the foundation, because this book code demo is simple, and no code, only to record some of their own knowledge points to note and code scripts A brief history of Chapter 1

Detail JavaScript data types and conversions JavaScript data Types1.Boolean (BOOL)Boolean: (value type) var b1=true;//boolean type2.Number (digital)Value: (value type) var n1=3.1415926;//numeric typeN1.tofixed (3);//rounding retains 3

ADD and Search word-data structure designDesign a data structure that supports the following and the operations:void Addword (Word) bool Search (word)Search (Word) can search a literal word or a regular expression string containing only letters a-z

Object-oriented programming is an abstract way to create a programming pattern based on a real-world model. It uses previously established examples, including modularity, polymorphism, and encapsulation of several technologies. Today, many popular

JavaScript template engine principle, a few lines of code of the ThingWhat is the template engine, said simple point, is a string in which there are several variables to be determined. Like what:var TPL = ' Hei, my name is , and I\ ' m years old. ';

In fact, a lot of non-ie kernel browser is still not support through the code to set the page as the home page and add to the collection function, so it is compatible, in fact, is only a try,catch after the reminder. Add to Favorites:/* * author:201

JavaScript is an object-oriented language, but it does not have a class concept like other object-oriented languages (such as java,c++), and there is no class-based inheritance system. But it has its own unique way of inheriting, which is based on

"Write in front" recently has been looking at the basis of JS, after all, although jquery is easy to use, it is always written by others, will only use the API to understand the principle of implementation. And so the JS Foundation to consolidate

This code is common to everyone:hereBut what is the meaning of void (0) here?The void in JavaScript is an operator，This operator specifies that an expression is to be evaluated but does not return a value。The void operator uses the following format:1

Extend functions in jQuery 1. $. extend ({}, defaults, options) The purpose is to protect the default parameters of the package. That is, the parameters in ults. The method is to use a new Null Object ({}) as $. the first parameter of extend,

Difference between letter-spacing and word-spacing, word-spacing Differences between letter-spacing and word-spacing:L although the use frequency of the two attributes in the title is not much, it cannot be said that they are useless. The two

Syntax rules for declaring variable names in JavaScript, and variables declared in javascript I. Syntax Rules 1. The variable must start with a letter, underscore (_), or dollar sign ($. 2. You can then use any number of English letters, numbers,

Also, Javascript Object copying and questions1. When we need to copy an object to another object, we generally implement this function shadowCopy(source,target){ var target=target||{}; for(var i in source) { target[i]=source[i]; }

Compatible with the JavaScript blocking event bubbling code of various browsers, and javascript bubbling Here is just a simple code demo, because the time issue has not been studied in depth, because the content that blocks event bubbles is used in

Display: table-cell usage introduction, displaytable-cell Usage of display: table-cell:The display attribute is frequently used, such as display: block or display: inline, but it may be unfamiliar with display: table-cell, this attribute will play a