JavaScript

this series as effective JavaScript 's reading notes. for code encapsulation, the JavaScript There are two ways to do that. The first is to use function, the second is to use the eval () function, and the string argument passed into the function can

A closed packageThe definition of "closure" (closure) in various professional literature is very abstract and difficult to read. My understanding is that closures are functions that can read other functions ' internal variables.Because in the

Well, team-mates have developed a simple 2048 ... Haha, no way, the game is so crazy, must be engaged, we can paste the code directly into an HTML file, directly execute canDependent files: jquery, if anything, you can download a copy of your -->

1.document.write (""); Output statementThe comments in the 2.JS are//3. Traditional HTML Document order is:document->html-> (head,body)4. The DOM order in a browser window is:window-> (navigator,screen,history,location,document)5. Get the name and

Why use "Inheritance" as the title instead of "Prototype chain"?The prototype chain is easy to understand if it is explained clearly and will not be confused with the usual java/c#. Inheritance is the most basic concept in object-oriented languages,

For the dropdown box is a very large operation, these days the project needs to summarizeFirst, dynamic construction optionSometimes we need to dynamically build the values in the dropdown box, where we'll use var varitem = new Option ("text",

In-depth understanding of the JavaScript series (ending article)IntroducedThe last few months are really busy, finally the "deep understanding of the JavaScript series," The final two "complete", so-called is not accurate, because a lot of content

Content Summary Scope-Safe constructors Lazy Load function function bindings function throttling one, scope-safe constructorsWe know that when the constructor is called with the new operator, this inside of the constructor

Length can get 3, "123". Length can also get 3, this slightly understand JS know.But Eval. Length, RegExp. Length, "". ToString. Length, 1..toString. What does length get?Get 1, 2, 0, 1, respectively, what do these numbers represent?In fact, the

this series as effective JavaScript 's reading notes. in general, a function Thisis related to the invocation type of the function, such as when the function is called directly as a function, ThisThe general point is the global object(Strictmodewhen

parseint () can parse an integer value in a string format, such as "32 days", to be resolved to a number of integers. The function also accepts the second argument, specifying the integer's binary (which, of course, should be in general decimal). A

First part characterPart1 Meta-charactersThe meta-characters of a regular expression are: ([{? \ ^ $ + * | .These metacharacters are interpreted in turn as follows:Parentheses ()1. Parentheses are mainly used to divide the whole (group)Example

JavaScript writes decimal to 16, the JavaScript cursor leaves the text box event, and gets the value of the text box

Understanding of JavaScript scopes and block-level scopes, and understanding of javascript concepts Scope is always the top priority of any programming language, because it controls the visibility and lifecycle of variables and parameters. Here, we

Free material download: iOS 8 vector UI material kit, iosui Dear friends, Apple finally pushed the official version of iOS 8 in the early morning. Although the system was not unveiled at the same time as the iPhone 6 Conference, it is no stranger

The nodejs command line parameter processing module uses the commander instance and nodejscommander It is true that the previous processing was using the built-in process. agrv, which can work, but it is not easy to use, so the tj god wrote a, my

Pass values from jsp pages to pages and from jsp pages It has not been used for a long time to pass such a value. It is generally. do requests are redirected to the frontend in the background. For example, some of them are only data display

Examples of differences between null and undefined in JavaScript Let's talk about undefined: Variables in Javascript are of a weak type. Therefore, when declaring a variable, you only need to use the var keyword. If a strong-type language like C is

Js uses location. search to obtain parameters from the page, jslocation. search This article mainly introduces how to use window. location. search to obtain parameters from the page. Function GetQueryString (name) {var reg = new RegExp ("(^ | &)" +

Use JavaScript to wrap text element nodes with a DIV, and use javascriptdiv When your application depends on a specific JavaScript class library, you will always try to solve the problems of some class libraries rather than the language. For example,