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Javasscript has 5 simple data types (also a basic data type): Undefined, Null, Boolean, number, String 1 of complex data types: Object The data type of all values in JavaScript is one of the above 6 types. So we need a way to detect what type of

1) Intro Not long ago I set up a technology group in a MM asked a question like this, she posted the code as follows: var a = 1;function hehe (){Window.alert (a);var a = 2;Window.alert (a);}Hehe (); The results of the execution are as follows:

Modular programming is a very common form of JavaScript programming. It generally makes the code easier to understand, but there are many good practices that are not widely known. In this article, I will review the basics of JS modular programming

My last blog title is wrong, causing some misunderstanding. I think the purpose of blogging is not to recite textbooks, but to share research and development experience. My last title was changed to "one of the topics of JavaScript closures: its

The prototype mode specifies the type that needs to be created through the instance object, which is essentially different from the factory method pattern, where the factory method pattern is defined by the inheritance of the class to create

Deep understanding of JS closures Closures (closure) are a difficult and unique feature of the JavaScript language, and many advanced applications rely on closure implementations. Scope of a variable To understand closures, you must first understand

Before we talk about the shallow copy and deep copy of JavaScript, we need to discuss the data type of JS. We all know there are five types of number,boolean,string,null,undefined,object. And object also contains Function,array and object itself.

Because JavaScript is divided into primitive types and reference types (similar to Java, C #). Array is a reference type, so directly with the = number assignment, only the address of the source array (or pointer) assigned to the destination array,

Article Introduction: The paper will recommend the recent 10 outstanding jquery plug-ins from the plugin channel of the jquery website for reference by developers. Today, the design field of competition is more and more fierce, only to

Article Introduction: Talk about the conflict prevention (noconflict) mechanism in jQuery. Many of the JS framework class libraries choose to use the $ symbol as a function or variable name, JQuery is one of the most typical. In JQuery,

The first part: Language core Lexical structures, types, values and variables, expressions and operators, syntax, objects, arrays, functions, classes and modules, pattern matching of regular expressions, subset and extension of JavaScript,

The following code:(1) var xx = function () { THIS.A = "XX"; this.b = THIS.A; } Alert (new XX (). b); (2) var x = function () { THIS.A = "X"; this.b = {A: "x.b", B:this.a,c:function

Double is one of the biggest promotions of the year, so this day's page design is also very important. Next, we will analyze the design process of the Double 11 poster.Final effect First, find

This demo case is the theme of the European Magic Tour, with the copy after that is the direction, then began to explore from the text of the keyword (European, magic, trip) with these several keywords, you can start looking for reference, and to

Because I want to make a fantasy poster, so the color of the tune is red and purple. The reality of the original relatively small mushroom amplification into the elements of the house, this exaggerated combination of forms will make the picture

This picture is finished before think this lizard Meng died, if the mouth can open a point, but there is no way; This is also the prophase material did not consider the good question; write this share, also want to sum up their own experience, and

The individual summed up a bit of experience in developing CSS frameworks, shortcoming. I hope everyone's discussion can make us progress together. :) 1. CSS Framework China's internet industry has been developed for 10 years, the browser

Believe that every front-end engineers have their favorite JavaScript frame, said emotion or faith, JavaScript framework to bring people is not only convenient development, there is a pure logical beauty, whether it is the simplicity of jquery, or

A little bit about the border in the lazy chapter, the complete PPT is here. Principle CSS Box model A box includes: margin+border+padding+content – A smooth diagonal line appears at the junction of the top and bottom border.

Hello, my name is zebra pattern. Displays the contents of the list using two identical styles but with different colors.Of course, this interpretation I borrowed from the "Designing Interfaces" came, slightly different. I definitely admit that this