JavaScript

JavaScript data Types 1.Boolean(Boolean) Boolean: (value type) var b1=true;//boolean type 2.number (numeric) Value : (value type) var n1=3.1415926;//numeric type n1.tofixed (3);//rounding retains 3 decimal places. 3 . String var s1= ' hello '

Overviewinstanceof Operator can be used to determine the function of a constructorprototype属性是否存在另外一个要检测对象的原型链上。Grammarinstanceof ConstructorParameters object the object to be detected.

? See a good article today to share with you:Definition: Encapsulates a series of algorithms so that they can be replaced by each other, and this pattern uses an algorithm independent of the changes in the customer using it.Description: The strategy

First of all, = = Equality equivalent, = = = Identity identity.= =, when the value types on both sides are different, type conversion is performed before comparison.= = =, do not type conversion, different types of certain range.The following are

Well, after a week, today finally will be "JavaScript DOM Programming Art (2nd edition)" This book finished, feel benefited, I and the author and publishers and so do not know, do not want to advertise for them, but this book is really worth a look,

Statement The IF statement automatically calls the Boolean () conversion function to convert the result of the expression to a Boolean value For-in the order of the property names for the loop output is unpredictable, the return order

a cookie was set up in the project and was successfully tested under Firefox. There was a problem with the IE test, and the location found to be a problem with the path to JavaScript setting cookies. The cookie under IE is set to the path of the URL,

1. PrefaceIn the previous article we have already described the creation of the hellomap of the first map application, which we describe the basic map component: How to use the Home Button, the scale bar, and the Eagle Eye chart.2. Basic Map

Common commands used by javascript to obtain the current information. Common commands used by javascript The content of this article is very simple. I would like to summarize some common commands for javascript to obtain the current information.

How to achieve the switching effect of the focus image of the js imitation potato mesh belt thumbnail, js thumbnail This article describes how to implement the focus image Switching Effect of the js imitation potato mesh belt thumbnail. Share it

JQuery selector code (4) -- Expr. preFilter   Expr. preFilter is a preprocessing method for ATTR, CHILD, and PSEUDO selectors in the tokenize method. The details are as follows:   Expr. preFilter: {ATTR: function (match) {/** to complete the

Share a simple javascript paging component written by yourself This article mainly shares a simple javascript paging component written by myself. The results are very good and the code is very detailed. We recommend it to our friends here.    A

Javascript uses regular expressions to remove characters After Spaces This article describes how to use a regular expression in javascript to remove characters After spaces. For more information, see   When reading data from the backend

Javascript + CSS implements a drag-and-drop nice rounded corner effect pop-up layer complete instance This article mainly introduces the JS + CSS pop-up layer for implementing the drag-and-drop nice rounded corner special effects. It analyzes the

Nodejs event monitoring and trigger understanding analysis, nodejs events This article analyzes the monitoring and triggering of node. js events. Share it with you for your reference. The specific analysis is as follows: Regarding the event-driven

Explanation of the original JavaScript model and prototype chain This article mainly introduces the original JavaScript model and prototype chain. This article describes the basic concepts of private variables and functions, static variables and

Javascript: Get the available width and height of the browser window and Screen 1. Get the valid width and height of the browser window (excluding the toolbar and scroll bar) NOTE: For the top ten visitors, you can use the specified parameter

Css3 box-sizing properties, css3box-sizingDefinition and usage The box-sizing attribute allows you to define specific elements that match a region in a specific way. For example, if you want to place two boxes with borders side by side, you can set

JS table simulation method and JS table Simulation Method This article describes how to simulate JS tables. Share it with you for your reference. The specific method is as follows: List I hope this article will help you design javascript

Web color value conversion using Javascript, javascriptweb I have been busy with business requirements recently and have not written a blog for a long time. Some time today, I looked at some front-end code in my recent project. When I saw the Web